content: /*
   * Copyright (C) 2015 The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package android.telephony;
  
  import android.Manifest;
  import android.annotation.NonNull;
  import android.annotation.Nullable;
  import android.annotation.RequiresPermission;
  import android.annotation.SuppressLint;
  import android.annotation.SystemApi;
  import android.annotation.SystemService;
  import android.annotation.TestApi;
  import android.annotation.UnsupportedAppUsage;
  import android.content.ComponentName;
  import android.content.Context;
  import android.os.PersistableBundle;
  import android.os.RemoteException;
  import android.os.ServiceManager;
  import android.service.carrier.CarrierService;
  import android.telecom.TelecomManager;
  import android.telephony.ims.ImsReasonInfo;
  
  import com.android.internal.telephony.ICarrierConfigLoader;
  
  /**
   * Provides access to telephony configuration values that are carrier-specific.
   */
  @SystemService(Context.CARRIER_CONFIG_SERVICE)
  public class CarrierConfigManager {
      private final static String TAG = "CarrierConfigManager";
  
      /**
       * Extra included in {@link #ACTION_CARRIER_CONFIG_CHANGED} to indicate the slot index that the
       * broadcast is for.
       */
      public static final String EXTRA_SLOT_INDEX = "android.telephony.extra.SLOT_INDEX";
  
      /**
       * Optional extra included in {@link #ACTION_CARRIER_CONFIG_CHANGED} to indicate the
       * subscription index that the broadcast is for, if a valid one is available.
       */
      public static final String EXTRA_SUBSCRIPTION_INDEX =
              SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX;
  
      private final Context mContext;
  
      /**
       * @hide
       */
      public CarrierConfigManager(Context context) {
          mContext = context;
      }
  
      /**
       * This intent is broadcast by the system when carrier config changes. An int is specified in
       * {@link #EXTRA_SLOT_INDEX} to indicate the slot index that this is for. An optional int extra
       * {@link #EXTRA_SUBSCRIPTION_INDEX} is included to indicate the subscription index if a valid
       * one is available for the slot index. An optional int extra
       * {@link TelephonyManager#EXTRA_CARRIER_ID} is included to indicate the carrier id for the
       * changed carrier configuration. An optional int extra
       * {@link TelephonyManager#EXTRA_SPECIFIC_CARRIER_ID} is included to indicate the precise
       * carrier id for the changed carrier configuration.
       * @see TelephonyManager#getSimCarrierId()
       * @see TelephonyManager#getSimSpecificCarrierId()
       */
      public static final String
              ACTION_CARRIER_CONFIG_CHANGED = "android.telephony.action.CARRIER_CONFIG_CHANGED";
  
      // Below are the keys used in carrier config bundles. To add a new variable, define the key and
      // give it a default value in sDefaults. If you need to ship a per-network override in the
      // system image, that can be added in packages/apps/CarrierConfig.
  
      /**
       * Specifies a value that identifies the version of the carrier configuration that is
       * currently in use. This string is displayed on the UI.
       * The format of the string is not specified.
       */
      public static final String KEY_CARRIER_CONFIG_VERSION_STRING =
              "carrier_config_version_string";
  
      /**
       * This flag specifies whether VoLTE availability is based on provisioning. By default this is
       * false.
       */
      public static final String
              KEY_CARRIER_VOLTE_PROVISIONED_BOOL = "carrier_volte_provisioned_bool";
  
      /**
       * Boolean indicating the Supplementary Services(SS) is disable when airplane mode on in the
       * Call Settings menu.
       * {@code true}: SS is disable when airplane mode on.
       * {@code false}: SS is enable when airplane mode on.
       * The default value for this key is {@code false}
       * @hide
       */
      public static final String KEY_DISABLE_SUPPLEMENTARY_SERVICES_IN_AIRPLANE_MODE_BOOL =
              "disable_supplementary_services_in_airplane_mode_bool";
  
      /**
       * Boolean indicating if the "Call forwarding" item is visible in the Call Settings menu.
       * true means visible. false means gone.
       * @hide
       */
      public static final String KEY_CALL_FORWARDING_VISIBILITY_BOOL =
              "call_forwarding_visibility_bool";
  
      /**
       * Boolean indicating if the "Caller ID" item is visible in the Additional Settings menu.
       * true means visible. false means gone.
       * @hide
       */
      public static final String KEY_ADDITIONAL_SETTINGS_CALLER_ID_VISIBILITY_BOOL =
              "additional_settings_caller_id_visibility_bool";
  
      /**
       * Boolean indicating if the "Call Waiting" item is visible in the Additional Settings menu.
       * true means visible. false means gone.
       * @hide
       */
      public static final String KEY_ADDITIONAL_SETTINGS_CALL_WAITING_VISIBILITY_BOOL =
              "additional_settings_call_waiting_visibility_bool";
  
     /**
      * Boolean indicating if the "Call barring" item is visible in the Call Settings menu.
      * If true, the "Call Barring" menu will be visible. If false, the menu will be gone.
      *
      * Disabled by default.
      */
      public static final String KEY_CALL_BARRING_VISIBILITY_BOOL =
              "call_barring_visibility_bool";
  
      /**
       * Flag indicating whether or not changing the call barring password via the "Call Barring"
       * settings menu is supported. If true, the option will be visible in the "Call
       * Barring" settings menu. If false, the option will not be visible.
       *
       * Enabled by default.
       */
      public static final String KEY_CALL_BARRING_SUPPORTS_PASSWORD_CHANGE_BOOL =
              "call_barring_supports_password_change_bool";
  
      /**
       * Flag indicating whether or not deactivating all call barring features via the "Call Barring"
       * settings menu is supported. If true, the option will be visible in the "Call
       * Barring" settings menu. If false, the option will not be visible.
       *
       * Enabled by default.
       */
      public static final String KEY_CALL_BARRING_SUPPORTS_DEACTIVATE_ALL_BOOL =
              "call_barring_supports_deactivate_all_bool";
  
      /**
       * Flag indicating whether the Phone app should ignore EVENT_SIM_NETWORK_LOCKED
       * events from the Sim.
       * If true, this will prevent the IccNetworkDepersonalizationPanel from being shown, and
       * effectively disable the "Sim network lock" feature.
       */
      public static final String
              KEY_IGNORE_SIM_NETWORK_LOCKED_EVENTS_BOOL = "ignore_sim_network_locked_events_bool";
  
      /**
       * When checking if a given number is the voicemail number, if this flag is true
       * then in addition to comparing the given number to the voicemail number, we also compare it
       * to the mdn. If this flag is false, the given number is only compared to the voicemail number.
       * By default this value is false.
       */
      public static final String KEY_MDN_IS_ADDITIONAL_VOICEMAIL_NUMBER_BOOL =
              "mdn_is_additional_voicemail_number_bool";
  
      /**
       * Flag indicating whether the Phone app should provide a "Dismiss" button on the SIM network
       * unlock screen. The default value is true. If set to false, there will be *no way* to dismiss
       * the SIM network unlock screen if you don't enter the correct unlock code. (One important
       * consequence: there will be no way to make an Emergency Call if your SIM is network-locked and
       * you don't know the PIN.)
       */
      public static final String
              KEY_SIM_NETWORK_UNLOCK_ALLOW_DISMISS_BOOL = "sim_network_unlock_allow_dismiss_bool";
  
      /**
       * Flag indicating whether or not sending emergency SMS messages over IMS
       * is supported when in LTE/limited LTE (Emergency only) service mode..
       *
       */
      public static final String
              KEY_SUPPORT_EMERGENCY_SMS_OVER_IMS_BOOL = "support_emergency_sms_over_ims_bool";
  
      /** Flag indicating if the phone is a world phone */
      public static final String KEY_WORLD_PHONE_BOOL = "world_phone_bool";
  
      /**
       * Flag to require or skip entitlement checks.
       * If true, entitlement checks will be executed if device has been configured for it,
       * If false, entitlement checks will be skipped.
       */
      public static final String
              KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL = "require_entitlement_checks_bool";
  
      /**
       * Flag indicating whether radio is to be restarted on error PDP_FAIL_REGULAR_DEACTIVATION
       * This is false by default.
       *
       * @deprecated Use {@link #KEY_RADIO_RESTART_FAILURE_CAUSES_INT_ARRAY} instead
       */
      @Deprecated
      public static final String KEY_RESTART_RADIO_ON_PDP_FAIL_REGULAR_DEACTIVATION_BOOL =
              "restart_radio_on_pdp_fail_regular_deactivation_bool";
  
      /**
       * A list of failure cause codes that will trigger a modem restart when telephony receiving
       * one of those during data setup. The cause codes are defined in 3GPP TS 24.008 Annex I and
       * TS 24.301 Annex B.
       */
      public static final String KEY_RADIO_RESTART_FAILURE_CAUSES_INT_ARRAY =
              "radio_restart_failure_causes_int_array";
  
      /**
       * If true, enable vibration (haptic feedback) for key presses in the EmergencyDialer activity.
       * The pattern is set on a per-platform basis using config_virtualKeyVibePattern. To be
       * consistent with the regular Dialer, this value should agree with the corresponding values
       * from config.xml under apps/Contacts.
       */
      public static final String
              KEY_ENABLE_DIALER_KEY_VIBRATION_BOOL = "enable_dialer_key_vibration_bool";
  
      /** Flag indicating if dtmf tone type is enabled */
      public static final String KEY_DTMF_TYPE_ENABLED_BOOL = "dtmf_type_enabled_bool";
  
      /** Flag indicating if auto retry is enabled */
      public static final String KEY_AUTO_RETRY_ENABLED_BOOL = "auto_retry_enabled_bool";
  
      /**
       * Determine whether we want to play local DTMF tones in a call, or just let the radio/BP handle
       * playing of the tones.
       */
      public static final String KEY_ALLOW_LOCAL_DTMF_TONES_BOOL = "allow_local_dtmf_tones_bool";
  
      /**
       * Determines if the carrier requires that a tone be played to the remote party when an app is
       * recording audio during a call (e.g. using a call recording app).
       * <p>
       * Note: This requires the Telephony config_supports_telephony_audio_device overlay to be true
       * in order to work.
       * @hide
       */
      public static final String KEY_PLAY_CALL_RECORDING_TONE_BOOL = "play_call_recording_tone_bool";
      /**
       * Determines if the carrier requires converting the destination number before sending out an
       * SMS. Certain networks and numbering plans require different formats.
       */
      public static final String KEY_SMS_REQUIRES_DESTINATION_NUMBER_CONVERSION_BOOL=
              "sms_requires_destination_number_conversion_bool";
  
      /**
       * If true, show an onscreen "Dial" button in the dialer. In practice this is used on all
       * platforms, even the ones with hard SEND/END keys, but for maximum flexibility it's controlled
       * by a flag here (which can be overridden on a per-product basis.)
       */
      public static final String KEY_SHOW_ONSCREEN_DIAL_BUTTON_BOOL = "show_onscreen_dial_button_bool";
  
      /** Determines if device implements a noise suppression device for in call audio. */
      public static final String
              KEY_HAS_IN_CALL_NOISE_SUPPRESSION_BOOL = "has_in_call_noise_suppression_bool";
  
      /**
       * Determines if the current device should allow emergency numbers to be logged in the Call Log.
       * (Some carriers require that emergency calls *not* be logged, presumably to avoid the risk of
       * accidental redialing from the call log UI. This is a good idea, so the default here is
       * false.)
       */
      public static final String
              KEY_ALLOW_EMERGENCY_NUMBERS_IN_CALL_LOG_BOOL = "allow_emergency_numbers_in_call_log_bool";
  
      /**
       * A string array containing numbers that shouldn't be included in the call log.
       * @hide
       */
      public static final String KEY_UNLOGGABLE_NUMBERS_STRING_ARRAY =
              "unloggable_numbers_string_array";
  
      /** If true, removes the Voice Privacy option from Call Settings */
      public static final String KEY_VOICE_PRIVACY_DISABLE_UI_BOOL = "voice_privacy_disable_ui_bool";
  
      /** Control whether users can reach the carrier portions of Cellular Network Settings. */
      public static final String
              KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL = "hide_carrier_network_settings_bool";
  
      /**
       * Do only allow auto selection in Advanced Network Settings when in home network.
       * Manual selection is allowed when in roaming network.
       * @hide
       */
      public static final String
              KEY_ONLY_AUTO_SELECT_IN_HOME_NETWORK_BOOL = "only_auto_select_in_home_network";
  
      /**
       * Control whether users receive a simplified network settings UI and improved network
       * selection.
       */
      public static final String
              KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL = "simplified_network_settings_bool";
  
      /** Control whether users can reach the SIM lock settings. */
      public static final String
              KEY_HIDE_SIM_LOCK_SETTINGS_BOOL = "hide_sim_lock_settings_bool";
  
      /** Control whether users can edit APNs in Settings. */
      public static final String KEY_APN_EXPAND_BOOL = "apn_expand_bool";
  
      /** Control whether users can choose a network operator. */
      public static final String KEY_OPERATOR_SELECTION_EXPAND_BOOL = "operator_selection_expand_bool";
  
      /** Used in Cellular Network Settings for preferred network type. */
      public static final String KEY_PREFER_2G_BOOL = "prefer_2g_bool";
  
      /** Show cdma network mode choices 1x, 3G, global etc. */
      public static final String KEY_SHOW_CDMA_CHOICES_BOOL = "show_cdma_choices_bool";
  
      /** CDMA activation goes through HFA */
      public static final String KEY_USE_HFA_FOR_PROVISIONING_BOOL = "use_hfa_for_provisioning_bool";
  
      /**
       * CDMA activation goes through OTASP.
       * <p>
       * TODO: This should be combined with config_use_hfa_for_provisioning and implemented as an enum
       * (NONE, HFA, OTASP).
       */
      public static final String KEY_USE_OTASP_FOR_PROVISIONING_BOOL = "use_otasp_for_provisioning_bool";
  
      /** Display carrier settings menu if true */
      public static final String KEY_CARRIER_SETTINGS_ENABLE_BOOL = "carrier_settings_enable_bool";
  
      /** Does not display additional call setting for IMS phone based on GSM Phone */
      public static final String KEY_ADDITIONAL_CALL_SETTING_BOOL = "additional_call_setting_bool";
  
      /** Show APN Settings for some CDMA carriers */
      public static final String KEY_SHOW_APN_SETTING_CDMA_BOOL = "show_apn_setting_cdma_bool";
  
      /** After a CDMA conference call is merged, the swap button should be displayed. */
      public static final String KEY_SUPPORT_SWAP_AFTER_MERGE_BOOL = "support_swap_after_merge_bool";
  
      /**
       * Determine whether user can edit voicemail number in Settings.
       */
      public static final String KEY_EDITABLE_VOICEMAIL_NUMBER_SETTING_BOOL =
              "editable_voicemail_number_setting_bool";
  
      /**
       * Since the default voicemail number is empty, if a SIM card does not have a voicemail number
       * available the user cannot use voicemail. This flag allows the user to edit the voicemail
       * number in such cases, and is false by default.
       */
      public static final String KEY_EDITABLE_VOICEMAIL_NUMBER_BOOL= "editable_voicemail_number_bool";
  
      /**
       * Determine whether the voicemail notification is persistent in the notification bar. If true,
       * the voicemail notifications cannot be dismissed from the notification bar.
       */
      public static final String
              KEY_VOICEMAIL_NOTIFICATION_PERSISTENT_BOOL = "voicemail_notification_persistent_bool";
  
      /** For IMS video over LTE calls, determines whether video pause signalling is supported. */
      public static final String
              KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL = "support_pause_ims_video_calls_bool";
  
      /**
       * Disables dialing "*228" (OTASP provisioning) on CDMA carriers where it is not supported or is
       * potentially harmful by locking the SIM to 3G.
       */
      public static final String
              KEY_DISABLE_CDMA_ACTIVATION_CODE_BOOL = "disable_cdma_activation_code_bool";
  
      /**
       * List of RIL radio technologies (See {@link ServiceState} {@code RIL_RADIO_TECHNOLOGY_*}
       * constants) which support only a single data connection at a time. Some carriers do not
       * support multiple pdp on UMTS.
       */
      public static final String
              KEY_ONLY_SINGLE_DC_ALLOWED_INT_ARRAY = "only_single_dc_allowed_int_array";
  
      /**
       * Override the platform's notion of a network operator being considered roaming.
       * Value is string array of MCCMNCs to be considered roaming for 3GPP RATs.
       */
      public static final String
              KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY = "gsm_roaming_networks_string_array";
  
      /**
       * Override the platform's notion of a network operator being considered not roaming.
       * Value is string array of MCCMNCs to be considered not roaming for 3GPP RATs.
       */
      public static final String
              KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY = "gsm_nonroaming_networks_string_array";
  
      /**
       * Override the device's configuration for the ImsService to use for this SIM card.
       */
      public static final String KEY_CONFIG_IMS_PACKAGE_OVERRIDE_STRING =
              "config_ims_package_override_string";
  
      /**
       * Override the package that will manage {@link SubscriptionPlan}
       * information instead of the {@link CarrierService} that defines this
       * value.
       *
       * @see SubscriptionManager#getSubscriptionPlans(int)
       * @see SubscriptionManager#setSubscriptionPlans(int, java.util.List)
       */
      public static final String KEY_CONFIG_PLANS_PACKAGE_OVERRIDE_STRING =
              "config_plans_package_override_string";
  
      /**
       * Override the platform's notion of a network operator being considered roaming.
       * Value is string array of SIDs to be considered roaming for 3GPP2 RATs.
       */
      public static final String
              KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY = "cdma_roaming_networks_string_array";
  
      /**
       * Override the platform's notion of a network operator being considered non roaming.
       * Value is string array of SIDs to be considered not roaming for 3GPP2 RATs.
       */
      public static final String
              KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY = "cdma_nonroaming_networks_string_array";
  
      /**
       * Override the platform's notion of a network operator being considered non roaming.
       * If true all networks are considered as home network a.k.a non-roaming.  When false,
       * the 2 pairs of CMDA and GSM roaming/non-roaming arrays are consulted.
       *
       * @see #KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
       * @see #KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
       * @see #KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY
       * @see #KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY
       */
      public static final String
              KEY_FORCE_HOME_NETWORK_BOOL = "force_home_network_bool";
  
      /**
       * Flag specifying whether VoLTE should be available for carrier, independent of carrier
       * provisioning. If false: hard disabled. If true: then depends on carrier provisioning,
       * availability, etc.
       */
      public static final String KEY_CARRIER_VOLTE_AVAILABLE_BOOL = "carrier_volte_available_bool";
  
      /**
       * Flag specifying whether video telephony is available for carrier. If false: hard disabled.
       * If true: then depends on carrier provisioning, availability, etc.
       */
      public static final String KEY_CARRIER_VT_AVAILABLE_BOOL = "carrier_vt_available_bool";
  
      /**
       * Flag specifying whether the carrier wants to notify the user when a VT call has been handed
       * over from WIFI to LTE.
       * <p>
       * The handover notification is sent as a
       * {@link TelephonyManager#EVENT_HANDOVER_VIDEO_FROM_WIFI_TO_LTE}
       * {@link android.telecom.Connection} event, which an {@link android.telecom.InCallService}
       * should use to trigger the display of a user-facing message.
       * <p>
       * The Connection event is sent to the InCallService only once, the first time it occurs.
       * @hide
       */
      public static final String KEY_NOTIFY_HANDOVER_VIDEO_FROM_WIFI_TO_LTE_BOOL =
              "notify_handover_video_from_wifi_to_lte_bool";
  
      /**
       * Flag specifying whether the carrier supports merging a RTT call with a voice call,
       * downgrading the call in the process.
       * @hide
       */
      public static final String KEY_ALLOW_MERGING_RTT_CALLS_BOOL =
               "allow_merging_rtt_calls_bool";
  
      /**
       * Flag specifying whether the carrier wants to notify the user when a VT call has been handed
       * over from LTE to WIFI.
       * <p>
       * The handover notification is sent as a
       * {@link TelephonyManager#EVENT_HANDOVER_VIDEO_FROM_LTE_TO_WIFI}
       * {@link android.telecom.Connection} event, which an {@link android.telecom.InCallService}
       * should use to trigger the display of a user-facing message.
       * @hide
       */
      public static final String KEY_NOTIFY_HANDOVER_VIDEO_FROM_LTE_TO_WIFI_BOOL =
              "notify_handover_video_from_lte_to_wifi_bool";
  
      /**
       * Flag specifying whether the carrier supports downgrading a video call (tx, rx or tx/rx)
       * directly to an audio call.
       * @hide
       */
      public static final String KEY_SUPPORT_DOWNGRADE_VT_TO_AUDIO_BOOL =
              "support_downgrade_vt_to_audio_bool";
  
      /**
       * Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
       * voicemail number.
       * When empty string, no default voicemail number is specified.
       */
      public static final String KEY_DEFAULT_VM_NUMBER_STRING = "default_vm_number_string";
  
      /**
       * Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
       * voicemail number for roaming network.
       * When empty string, no default voicemail number is specified for roaming network.
       * @hide
       */
      public static final String KEY_DEFAULT_VM_NUMBER_ROAMING_STRING =
              "default_vm_number_roaming_string";
  
      /**
       * Flag that specifies to use the user's own phone number as the voicemail number when there is
       * no pre-loaded voicemail number on the SIM card.
       * <p>
       * {@link #KEY_DEFAULT_VM_NUMBER_STRING} takes precedence over this flag.
       * <p>
       * If false, the system default (*86) will be used instead.
       */
      public static final String KEY_CONFIG_TELEPHONY_USE_OWN_NUMBER_FOR_VOICEMAIL_BOOL =
              "config_telephony_use_own_number_for_voicemail_bool";
  
      /**
       * When {@code true}, changes to the mobile data enabled switch will not cause the VT
       * registration state to change.  That is, turning on or off mobile data will not cause VT to be
       * enabled or disabled.
       * When {@code false}, disabling mobile data will cause VT to be de-registered.
       * <p>
       * See also {@link #KEY_VILTE_DATA_IS_METERED_BOOL}.
       * @hide
       */
      public static final String KEY_IGNORE_DATA_ENABLED_CHANGED_FOR_VIDEO_CALLS =
              "ignore_data_enabled_changed_for_video_calls";
  
      /**
       * Flag indicating whether data used for a video call over LTE is metered or not.
       * <p>
       * When {@code true}, if the device hits the data limit or data is disabled during a ViLTE call,
       * the call will be downgraded to audio-only (or paused if
       * {@link #KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL} is {@code true}).
       *
       * @hide
       */
      public static final String KEY_VILTE_DATA_IS_METERED_BOOL = "vilte_data_is_metered_bool";
  
      /**
       * Flag specifying whether WFC over IMS should be available for carrier: independent of
       * carrier provisioning. If false: hard disabled. If true: then depends on carrier
       * provisioning, availability etc.
       */
      public static final String KEY_CARRIER_WFC_IMS_AVAILABLE_BOOL = "carrier_wfc_ims_available_bool";
  
      /**
       * Specifies a map from dialstrings to replacements for roaming network service numbers which
       * cannot be replaced on the carrier side.
       * <p>
       * Individual entries have the format:
       * [dialstring to replace]:[replacement]
       */
      public static final String KEY_DIAL_STRING_REPLACE_STRING_ARRAY =
              "dial_string_replace_string_array";
  
      /**
       * Flag specifying whether WFC over IMS supports the "wifi only" option.  If false, the wifi
       * calling settings will not include an option for "wifi only".  If true, the wifi calling
       * settings will include an option for "wifi only"
       * <p>
       * By default, it is assumed that WFC supports "wifi only".
       */
      public static final String KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL =
              "carrier_wfc_supports_wifi_only_bool";
  
      /**
       * Default mode for WFC over IMS on home network:
       * <ul>
       *   <li>0: Wi-Fi only
       *   <li>1: prefer mobile network
       *   <li>2: prefer Wi-Fi
       * </ul>
       */
      public static final String KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT =
              "carrier_default_wfc_ims_mode_int";
  
      /**
       * Default mode for WFC over IMS on roaming network.
       * See {@link #KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT} for meaning of values.
       */
      public static final String KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT =
              "carrier_default_wfc_ims_roaming_mode_int";
  
      /**
       * Default WFC_IMS_enabled: true VoWiFi by default is on
       *                          false VoWiFi by default is off
       * @hide
       */
      public static final String KEY_CARRIER_DEFAULT_WFC_IMS_ENABLED_BOOL =
              "carrier_default_wfc_ims_enabled_bool";
  
      /**
       * Default WFC_IMS_roaming_enabled: true VoWiFi roaming by default is on
       *                                  false VoWiFi roaming by default is off
       * @hide
       */
      public static final String KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_ENABLED_BOOL =
              "carrier_default_wfc_ims_roaming_enabled_bool";
  
      /**
       * Flag indicating whether failed calls due to no service should prompt the user to enable
       * WIFI calling.  When {@code true}, if the user attempts to establish a call when there is no
       * service available, they are connected to WIFI, and WIFI calling is disabled, a different
       * call failure message will be used to encourage the user to enable WIFI calling.
       * @hide
       */
      public static final String KEY_CARRIER_PROMOTE_WFC_ON_CALL_FAIL_BOOL =
              "carrier_promote_wfc_on_call_fail_bool";
  
      /**
       * Flag specifying whether provisioning is required for VoLTE, Video Telephony, and WiFi
       * Calling.
       */
      public static final String KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL
              = "carrier_volte_provisioning_required_bool";
  
      /**
       * Flag indicating whether or not the IMS MmTel UT capability requires carrier provisioning
       * before it can be set as enabled.
       *
       * If true, the UT capability will be set to false for the newly loaded subscription
       * and will require the carrier provisioning app to set the persistent provisioning result.
       * If false, the platform will not wait for provisioning status updates for the UT capability
       * and enable the UT over IMS capability for the subscription when the subscription is loaded.
       *
       * The default value for this key is {@code false}.
       */
      public static final String KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL =
              "carrier_ut_provisioning_required_bool";
  
      /**
       * Flag indicating whether or not the carrier supports Supplementary Services over the UT
       * interface for this subscription.
       *
       * If true, the device will use Supplementary Services over UT when provisioned (see
       * {@link #KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL}). If false, this device will fallback to
       * circuit switch for supplementary services and will disable this capability for IMS entirely.
       *
       * The default value for this key is {@code true}.
       */
      public static final String KEY_CARRIER_SUPPORTS_SS_OVER_UT_BOOL =
              "carrier_supports_ss_over_ut_bool";
  
      /**
       * Flag specifying if WFC provisioning depends on VoLTE provisioning.
       *
       * {@code false}: default value; honor actual WFC provisioning state.
       * {@code true}: when VoLTE is not provisioned, treat WFC as not provisioned; when VoLTE is
       *               provisioned, honor actual WFC provisioning state.
       *
       * As of now, Verizon is the only carrier enforcing this dependency in their
       * WFC awareness and activation requirements.
       *
       * @hide
       *  */
      public static final String KEY_CARRIER_VOLTE_OVERRIDE_WFC_PROVISIONING_BOOL
              = "carrier_volte_override_wfc_provisioning_bool";
  
      /**
       * Override the device's configuration for the cellular data service to use for this SIM card.
       * @hide
       */
      public static final String KEY_CARRIER_DATA_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING
              = "carrier_data_service_wwan_package_override_string";
  
      /**
       * Override the device's configuration for the IWLAN data service to use for this SIM card.
       * @hide
       */
      public static final String KEY_CARRIER_DATA_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING
              = "carrier_data_service_wlan_package_override_string";
  
      /** Flag specifying whether VoLTE TTY is supported. */
      public static final String KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL
              = "carrier_volte_tty_supported_bool";
  
      /**
       * Flag specifying whether IMS service can be turned off. If false then the service will not be
       * turned-off completely, but individual features can be disabled.
       */
      public static final String KEY_CARRIER_ALLOW_TURNOFF_IMS_BOOL
              = "carrier_allow_turnoff_ims_bool";
  
      /**
       * Flag specifying whether Generic Bootstrapping Architecture capable SIM is required for IMS.
       */
      public static final String KEY_CARRIER_IMS_GBA_REQUIRED_BOOL
              = "carrier_ims_gba_required_bool";
  
      /**
       * Flag specifying whether IMS instant lettering is available for the carrier.  {@code True} if
       * instant lettering is available for the carrier, {@code false} otherwise.
       */
      public static final String KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL =
              "carrier_instant_lettering_available_bool";
  
      /*
       * Flag specifying whether IMS should be the first phone attempted for E911 even if the
       * phone is not in service.
       */
      public static final String KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL
              = "carrier_use_ims_first_for_emergency_bool";
  
      /**
       * When IMS instant lettering is available for a carrier (see
       * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), determines the list of characters
       * which may not be contained in messages.  Should be specified as a regular expression suitable
       * for use with {@link String#matches(String)}.
       */
      public static final String KEY_CARRIER_INSTANT_LETTERING_INVALID_CHARS_STRING =
              "carrier_instant_lettering_invalid_chars_string";
  
      /**
       * When IMS instant lettering is available for a carrier (see
       * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), determines a list of characters which
       * must be escaped with a backslash '\' character.  Should be specified as a string containing
       * the characters to be escaped.  For example to escape quote and backslash the string would be
       * a quote and a backslash.
       */
      public static final String KEY_CARRIER_INSTANT_LETTERING_ESCAPED_CHARS_STRING =
              "carrier_instant_lettering_escaped_chars_string";
  
      /**
       * When IMS instant lettering is available for a carrier (see
       * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), determines the character encoding
       * which will be used when determining the length of messages.  Used in the InCall UI to limit
       * the number of characters the user may type.  If empty-string, the instant lettering
       * message size limit will be enforced on a 1:1 basis.  That is, each character will count
       * towards the messages size limit as a single bye.  If a character encoding is specified, the
       * message size limit will be based on the number of bytes in the message per the specified
       * encoding.
       */
      public static final String KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING =
              "carrier_instant_lettering_encoding_string";
  
      /**
       * When IMS instant lettering is available for a carrier (see
       * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), the length limit for messages.  Used
       * in the InCall UI to ensure the user cannot enter more characters than allowed by the carrier.
       * See also {@link #KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING} for more information on how
       * the length of the message is calculated.
       */
      public static final String KEY_CARRIER_INSTANT_LETTERING_LENGTH_LIMIT_INT =
              "carrier_instant_lettering_length_limit_int";
  
      /**
       * If Voice Radio Technology is RIL_RADIO_TECHNOLOGY_LTE:14 or RIL_RADIO_TECHNOLOGY_UNKNOWN:0
       * this is the value that should be used instead. A configuration value of
       * RIL_RADIO_TECHNOLOGY_UNKNOWN:0 means there is no replacement value and that the default
       * assumption for phone type (GSM) should be used.
       */
      public static final String KEY_VOLTE_REPLACEMENT_RAT_INT = "volte_replacement_rat_int";
  
      /**
       * The default sim call manager to use when the default dialer doesn't implement one. A sim call
       * manager can control and route outgoing and incoming phone calls, even if they're placed
       * using another connection service (PSTN, for example).
       */
      public static final String KEY_DEFAULT_SIM_CALL_MANAGER_STRING = "default_sim_call_manager_string";
  
      /**
       * The default flag specifying whether ETWS/CMAS test setting is forcibly disabled in
       * Settings->More->Emergency broadcasts menu even though developer options is turned on.
       */
      public static final String KEY_CARRIER_FORCE_DISABLE_ETWS_CMAS_TEST_BOOL =
              "carrier_force_disable_etws_cmas_test_bool";
  
      /**
       * The default flag specifying whether "Turn on Notifications" option will be always shown in
       * Settings->More->Emergency broadcasts menu regardless developer options is turned on or not.
       */
      public static final String KEY_ALWAYS_SHOW_EMERGENCY_ALERT_ONOFF_BOOL =
              "always_show_emergency_alert_onoff_bool";
  
      /**
       * The flag to disable cell broadcast severe alert when extreme alert is disabled.
       * @hide
       */
      public static final String KEY_DISABLE_SEVERE_WHEN_EXTREME_DISABLED_BOOL =
              "disable_severe_when_extreme_disabled_bool";
  
      /**
       * The message expiration time in milliseconds for duplicate detection purposes.
       * @hide
       */
      public static final String KEY_MESSAGE_EXPIRATION_TIME_LONG =
              "message_expiration_time_long";
  
      /**
       * The data call retry configuration for different types of APN.
       * @hide
       */
      public static final String KEY_CARRIER_DATA_CALL_RETRY_CONFIG_STRINGS =
              "carrier_data_call_retry_config_strings";
  
      /**
       * Delay in milliseconds between trying APN from the pool
       * @hide
       */
      public static final String KEY_CARRIER_DATA_CALL_APN_DELAY_DEFAULT_LONG =
              "carrier_data_call_apn_delay_default_long";
  
      /**
       * Faster delay in milliseconds between trying APN from the pool
       * @hide
       */
      public static final String KEY_CARRIER_DATA_CALL_APN_DELAY_FASTER_LONG =
              "carrier_data_call_apn_delay_faster_long";
  
      /**
       * Delay in milliseconds for retrying APN after disconnect
       * @hide
       */
      public static final String KEY_CARRIER_DATA_CALL_APN_RETRY_AFTER_DISCONNECT_LONG =
              "carrier_data_call_apn_retry_after_disconnect_long";
  
      /**
       * Data call setup permanent failure causes by the carrier
       */
      public static final String KEY_CARRIER_DATA_CALL_PERMANENT_FAILURE_STRINGS =
              "carrier_data_call_permanent_failure_strings";
  
      /**
       * Default APN types that are metered by the carrier
       * @hide
       */
      public static final String KEY_CARRIER_METERED_APN_TYPES_STRINGS =
              "carrier_metered_apn_types_strings";
      /**
       * Default APN types that are roaming-metered by the carrier
       * @hide
       */
      public static final String KEY_CARRIER_METERED_ROAMING_APN_TYPES_STRINGS =
              "carrier_metered_roaming_apn_types_strings";
  
      /**
       * APN types that are not allowed on cellular
       * @hide
       */
      public static final String KEY_CARRIER_WWAN_DISALLOWED_APN_TYPES_STRING_ARRAY =
              "carrier_wwan_disallowed_apn_types_string_array";
  
      /**
       * APN types that are not allowed on IWLAN
       * @hide
       */
      public static final String KEY_CARRIER_WLAN_DISALLOWED_APN_TYPES_STRING_ARRAY =
              "carrier_wlan_disallowed_apn_types_string_array";
      /**
       * CDMA carrier ERI (Enhanced Roaming Indicator) file name
       * @hide
       */
      public static final String KEY_CARRIER_ERI_FILE_NAME_STRING =
              "carrier_eri_file_name_string";
  
      /* The following 3 fields are related to carrier visual voicemail. */
  
      /**
       * The carrier number mobile outgoing (MO) sms messages are sent to.
       */
      public static final String KEY_VVM_DESTINATION_NUMBER_STRING = "vvm_destination_number_string";
  
      /**
       * The port through which the mobile outgoing (MO) sms messages are sent through.
       */
      public static final String KEY_VVM_PORT_NUMBER_INT = "vvm_port_number_int";
  
      /**
       * The type of visual voicemail protocol the carrier adheres to. See {@link TelephonyManager}
       * for possible values. For example {@link TelephonyManager#VVM_TYPE_OMTP}.
       */
      public static final String KEY_VVM_TYPE_STRING = "vvm_type_string";
  
      /**
       * Whether cellular data is required to access visual voicemail.
       */
      public static final String KEY_VVM_CELLULAR_DATA_REQUIRED_BOOL =
          "vvm_cellular_data_required_bool";
  
      /**
       * The default OMTP visual voicemail client prefix to use. Defaulted to "//VVM"
       */
      public static final String KEY_VVM_CLIENT_PREFIX_STRING =
              "vvm_client_prefix_string";
  
      /**
       * Whether to use SSL to connect to the visual voicemail IMAP server. Defaulted to false.
       */
      public static final String KEY_VVM_SSL_ENABLED_BOOL = "vvm_ssl_enabled_bool";
  
      /**
       * A set of capabilities that should not be used even if it is reported by the visual voicemail
       * IMAP CAPABILITY command.
       */
      public static final String KEY_VVM_DISABLED_CAPABILITIES_STRING_ARRAY =
              "vvm_disabled_capabilities_string_array";
  
      /**
       * Whether legacy mode should be used when the visual voicemail client is disabled.
       *
       * <p>Legacy mode is a mode that on the carrier side visual voicemail is still activated, but on
       * the client side all network operations are disabled. SMSs are still monitored so a new
       * message SYNC SMS will be translated to show a message waiting indicator, like traditional
       * voicemails.
       *
       * <p>This is for carriers that does not support VVM deactivation so voicemail can continue to
       * function without the data cost.
       */
      public static final String KEY_VVM_LEGACY_MODE_ENABLED_BOOL =
              "vvm_legacy_mode_enabled_bool";
  
      /**
       * Whether to prefetch audio data on new voicemail arrival, defaulted to true.
       */
      public static final String KEY_VVM_PREFETCH_BOOL = "vvm_prefetch_bool";
  
      /**
       * The package name of the carrier's visual voicemail app to ensure that dialer visual voicemail
       * and carrier visual voicemail are not active at the same time.
       *
       * @deprecated use {@link #KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY}.
       */
      @Deprecated
      public static final String KEY_CARRIER_VVM_PACKAGE_NAME_STRING = "carrier_vvm_package_name_string";
  
      /**
       * A list of the carrier's visual voicemail app package names to ensure that dialer visual
       * voicemail and carrier visual voicemail are not active at the same time.
       */
      public static final String KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY =
              "carrier_vvm_package_name_string_array";
  
      /**
       * Flag specifying whether ICCID is showed in SIM Status screen, default to false.
       */
      public static final String KEY_SHOW_ICCID_IN_SIM_STATUS_BOOL = "show_iccid_in_sim_status_bool";
  
      /**
       * Flag specifying whether the {@link android.telephony.SignalStrength} is shown in the SIM
       * Status screen. The default value is true.
       */
      public static final String KEY_SHOW_SIGNAL_STRENGTH_IN_SIM_STATUS_BOOL =
          "show_signal_strength_in_sim_status_bool";
  
      /**
       * Flag specifying whether an additional (client initiated) intent needs to be sent on System
       * update
       */
      public static final String KEY_CI_ACTION_ON_SYS_UPDATE_BOOL = "ci_action_on_sys_update_bool";
  
      /**
       * Intent to be sent for the additional action on System update
       */
      public static final String KEY_CI_ACTION_ON_SYS_UPDATE_INTENT_STRING =
              "ci_action_on_sys_update_intent_string";
  
      /**
       * Extra to be included in the intent sent for additional action on System update
       */
      public static final String KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_STRING =
              "ci_action_on_sys_update_extra_string";
  
      /**
       * Value of extra included in intent sent for additional action on System update
       */
      public static final String KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_VAL_STRING =
              "ci_action_on_sys_update_extra_val_string";
  
      /**
       * Specifies the amount of gap to be added in millis between postdial DTMF tones. When a
       * non-zero value is specified, the UE shall wait for the specified amount of time before it
       * sends out successive DTMF tones on the network.
       */
      public static final String KEY_GSM_DTMF_TONE_DELAY_INT = "gsm_dtmf_tone_delay_int";
  
      /**
       * Specifies the amount of gap to be added in millis between DTMF tones. When a non-zero value
       * is specified, the UE shall wait for the specified amount of time before it sends out
       * successive DTMF tones on the network.
       */
      public static final String KEY_IMS_DTMF_TONE_DELAY_INT = "ims_dtmf_tone_delay_int";
  
      /**
       * Specifies the amount of gap to be added in millis between postdial DTMF tones. When a
       * non-zero value is specified, the UE shall wait for the specified amount of time before it
       * sends out successive DTMF tones on the network.
       */
      public static final String KEY_CDMA_DTMF_TONE_DELAY_INT = "cdma_dtmf_tone_delay_int";
  
      /**
       * Some carriers will send call forwarding responses for voicemail in a format that is not 3gpp
       * compliant, which causes issues during parsing. This causes the
       * {@link com.android.internal.telephony.CallForwardInfo#number} to contain non-numerical
       * characters instead of a number.
       *
       * If true, we will detect the non-numerical characters and replace them with "Voicemail".
       * @hide
       */
      public static final String KEY_CALL_FORWARDING_MAP_NON_NUMBER_TO_VOICEMAIL_BOOL =
              "call_forwarding_map_non_number_to_voicemail_bool";
  
      /**
       * When {@code true}, the phone will always tell the IMS stack to keep RTT enabled and
       * determine on a per-call basis (based on extras from the dialer app) whether a call should be
       * an RTT call or not.
       *
       * When {@code false}, the old behavior is used, where the toggle in accessibility settings is
       * used to set the IMS stack's RTT enabled state.
       * @hide
       */
      public static final String KEY_IGNORE_RTT_MODE_SETTING_BOOL =
              "ignore_rtt_mode_setting_bool";
  
      /**
       * Determines whether conference calls are supported by a carrier.  When {@code true},
       * conference calling is supported, {@code false otherwise}.
       */
      public static final String KEY_SUPPORT_CONFERENCE_CALL_BOOL = "support_conference_call_bool";
  
      /**
       * Determines whether a maximum size limit for IMS conference calls is enforced on the device.
       * When {@code true}, IMS conference calls will be limited to at most
       * {@link #KEY_IMS_CONFERENCE_SIZE_LIMIT_INT} participants.  When {@code false}, no attempt is made
       * to limit the number of participants in a conference (the carrier will raise an error when an
       * attempt is made to merge too many participants into a conference).
       */
      public static final String KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL =
              "is_ims_conference_size_enforced_bool";
  
      /**
       * Determines the maximum number of participants the carrier supports for a conference call.
       * This number is exclusive of the current device.  A conference between 3 devices, for example,
       * would have a size limit of 2 participants.
       * Enforced when {@link #KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL} is {@code true}.
       */
      public static final String KEY_IMS_CONFERENCE_SIZE_LIMIT_INT = "ims_conference_size_limit_int";
  
      /**
       * Determines whether manage IMS conference calls is supported by a carrier.  When {@code true},
       * manage IMS conference call is supported, {@code false otherwise}.
       * @hide
       */
      public static final String KEY_SUPPORT_MANAGE_IMS_CONFERENCE_CALL_BOOL =
              "support_manage_ims_conference_call_bool";
  
      /**
       * Determines whether the IMS conference merge process supports and returns its participants
       * data. When {@code true}, on merge complete, conference call would have a list of its
       * participants returned in XML format, {@code false otherwise}.
       * @hide
       */
      public static final String KEY_SUPPORT_IMS_CONFERENCE_EVENT_PACKAGE_BOOL =
              "support_ims_conference_event_package_bool";
  
      /**
       * Determines whether High Definition audio property is displayed in the dialer UI.
       * If {@code false}, remove the HD audio property from the connection so that HD audio related
       * UI is not displayed. If {@code true}, keep HD audio property as it is configured.
       */
      public static final String KEY_DISPLAY_HD_AUDIO_PROPERTY_BOOL =
              "display_hd_audio_property_bool";
  
      /**
       * Determines whether IMS conference calls are supported by a carrier.  When {@code true},
       * IMS conference calling is supported, {@code false} otherwise.
       * @hide
       */
      public static final String KEY_SUPPORT_IMS_CONFERENCE_CALL_BOOL =
              "support_ims_conference_call_bool";
  
      /**
       * Determines whether video conference calls are supported by a carrier.  When {@code true},
       * video calls can be merged into conference calls, {@code false} otherwiwse.
       * <p>
       * Note: even if video conference calls are not supported, audio calls may be merged into a
       * conference if {@link #KEY_SUPPORT_CONFERENCE_CALL_BOOL} is {@code true}.
       * @hide
       */
      public static final String KEY_SUPPORT_VIDEO_CONFERENCE_CALL_BOOL =
              "support_video_conference_call_bool";
  
      /**
       * Determine whether user can toggle Enhanced 4G LTE Mode in Settings.
       */
      public static final String KEY_EDITABLE_ENHANCED_4G_LTE_BOOL = "editable_enhanced_4g_lte_bool";
  
      /**
       * Determines whether the Enhanced 4G LTE toggle will be shown in the settings. When this
       * option is {@code true}, the toggle will be hidden regardless of whether the device and
       * carrier supports 4G LTE or not.
       */
      public static final String KEY_HIDE_ENHANCED_4G_LTE_BOOL = "hide_enhanced_4g_lte_bool";
  
      /**
       * Sets the default state for the "Enhanced 4G LTE" or "Advanced Calling" mode toggle set by the
       * user. When this is {@code true}, this mode by default is on, otherwise if {@code false},
       * this mode by default is off.
       */
      public static final String KEY_ENHANCED_4G_LTE_ON_BY_DEFAULT_BOOL =
              "enhanced_4g_lte_on_by_default_bool";
  
      /**
       * Determine whether IMS apn can be shown.
       */
      public static final String KEY_HIDE_IMS_APN_BOOL = "hide_ims_apn_bool";
  
      /**
       * Determine whether preferred network type can be shown.
       */
      public static final String KEY_HIDE_PREFERRED_NETWORK_TYPE_BOOL = "hide_preferred_network_type_bool";
  
      /**
       * String array for package names that need to be enabled for this carrier.
       * If user has explicitly disabled some packages in the list, won't re-enable.
       * Other carrier specific apps which are not in this list may be disabled for current carrier,
       * and only be re-enabled when this config for another carrier includes it.
       *
       * @hide
       */
      public static final String KEY_ENABLE_APPS_STRING_ARRAY = "enable_apps_string_array";
  
      /**
       * Determine whether user can switch Wi-Fi preferred or Cellular preferred in calling preference.
       * Some operators support Wi-Fi Calling only, not VoLTE.
       * They don't need "Cellular preferred" option.
       * In this case, set uneditalbe attribute for preferred preference.
       * @hide
       */
      public static final String KEY_EDITABLE_WFC_MODE_BOOL = "editable_wfc_mode_bool";
  
       /**
        * Flag to indicate if Wi-Fi needs to be disabled in ECBM
        * @hide
        **/
       public static final String
                KEY_CONFIG_WIFI_DISABLE_IN_ECBM = "config_wifi_disable_in_ecbm";
  
      /**
       * List operator-specific error codes and indices of corresponding error strings in
       * wfcOperatorErrorAlertMessages and wfcOperatorErrorNotificationMessages.
       *
       * Example: "REG09|0" specifies error code "REG09" and index "0". This index will be
       * used to find alert and notification messages in wfcOperatorErrorAlertMessages and
       * wfcOperatorErrorNotificationMessages.
       *
       * @hide
       */
      public static final String KEY_WFC_OPERATOR_ERROR_CODES_STRING_ARRAY =
              "wfc_operator_error_codes_string_array";
  
      /**
       * Indexes of SPN format strings in wfcSpnFormats.
       *
       * <p>Available options are:
       * <ul>
       * <li>  0: %s</li>
       * <li>  1: %s Wi-Fi Calling</li>
       * <li>  2: WLAN Call</li>
       * <li>  3: %s WLAN Call</li>
       * <li>  4: %s Wi-Fi</li>
       * <li>  5: WiFi Calling | %s</li>
       * <li>  6: %s VoWifi</li>
       * <li>  7: Wi-Fi Calling</li>
       * <li>  8: Wi-Fi</li>
       * <li>  9: WiFi Calling</li>
       * <li> 10: VoWifi</li>
       * <li> 11: %s WiFi Calling</li>
       * @hide
       */
      public static final String KEY_WFC_SPN_FORMAT_IDX_INT = "wfc_spn_format_idx_int";
  
      /**
       * Indexes of data SPN format strings in wfcSpnFormats.
       *
       * @see KEY_WFC_SPN_FORMAT_IDX_INT for available options.
       * @hide
       */
      public static final String KEY_WFC_DATA_SPN_FORMAT_IDX_INT = "wfc_data_spn_format_idx_int";
  
      /**
       * Indexes of SPN format strings in wfcSpnFormats used during flight mode.
       *
       * Set to -1 to use the value from KEY_WFC_SPN_FORMAT_IDX_INT also in this case.
       * @see KEY_WFC_SPN_FORMAT_IDX_INT for other available options.
       * @hide
       */
      public static final String KEY_WFC_FLIGHT_MODE_SPN_FORMAT_IDX_INT =
              "wfc_flight_mode_spn_format_idx_int";
  
      /**
       * Use root locale when reading wfcSpnFormats.
       *
       * If true, then the root locale will always be used when reading wfcSpnFormats. This means the
       * non localized version of wfcSpnFormats will be used.
       * @hide
       */
      public static final String KEY_WFC_SPN_USE_ROOT_LOCALE = "wfc_spn_use_root_locale";
  
      /**
       * The Component Name of the activity that can setup the emergency addrees for WiFi Calling
       * as per carrier requirement.
       * @hide
       */
       public static final String KEY_WFC_EMERGENCY_ADDRESS_CARRIER_APP_STRING =
              "wfc_emergency_address_carrier_app_string";
  
      /**
       * Unconditionally override the carrier name string using #KEY_CARRIER_NAME_STRING.
       *
       * If true, then the carrier name string will be #KEY_CARRIER_NAME_STRING, unconditionally.
       *
       * <p>If false, then the override will be performed conditionally and the
       * #KEY_CARRIER_NAME_STRING will have the lowest-precedence; it will only be used in the event
       * that the name string would otherwise be empty, allowing it to serve as a last-resort. If
       * used, this value functions in place of the SPN on any/all ICC records for the corresponding
       * subscription.
       */
      public static final String KEY_CARRIER_NAME_OVERRIDE_BOOL = "carrier_name_override_bool";
  
      /**
       * String to identify carrier name in CarrierConfig app. This string overrides SPN if
       * #KEY_CARRIER_NAME_OVERRIDE_BOOL is true; otherwise, it will be used if its value is provided
       * and SPN is unavailable
       */
      public static final String KEY_CARRIER_NAME_STRING = "carrier_name_string";
  
      /**
       * Override the SPN Display Condition 2 integer bits (lsb). B2, B1 is the last two bits of the
       * spn display condition coding.
       *
       * The default value -1 mean this field is not set.
       *
       * B1 = 0: display of registered PLMN name not required when registered PLMN is either HPLMN
       * or a PLMN in the service provider PLMN list (see EF_SPDI).
       * B1 = 1: display of registered PLMN name required when registered PLMN is either HPLMN or a
       * PLMN in the service provider PLMN list(see EF_SPDI).
       * B2 = 0: display of the service provider name is required when registered PLMN is neither
       * HPLMN nor a PLMN in the service provider PLMN list(see EF_SPDI).
       * B2 = 1: display of the service provider name is not required when registered PLMN is neither
       * HPLMN nor a PLMN in the service provider PLMN list(see EF_SPDI).
       *
       * Reference: 3GPP TS 31.102 v15.2.0 Section 4.2.12 EF_SPN.
       * @hide
       */
      public static final String KEY_SPN_DISPLAY_CONDITION_OVERRIDE_INT =
              "spn_display_condition_override_int";
  
      /**
       * Override the SPDI - an array of PLMN(MCC + MNC) strings.
       *
       * Reference: 3GPP TS 31.102 v15.2.0 Section 4.2.66 EF_SPDI.
       * @hide
       */
      public static final String KEY_SPDI_OVERRIDE_STRING_ARRAY = "spdi_override_string_array";
  
      /**
       * Override the EHPLMNs - an array of PLMN(MCC + MNC) strings.
       *
       * To allow provision for multiple HPLMN codes, PLMN codes that are present within this list
       * shall replace the HPLMN code derived from the IMSI for PLMN selection purposes.
       *
       * Reference: 3GPP TS 31.102 v15.2.0 Section 4.2.84 EF_EHPLMN
       * Reference: 3GPP TS 23.122 v15.6.0 Section 1.2 Equivalent HPLMN list
       * @hide
       */
      public static final String KEY_EHPLMN_OVERRIDE_STRING_ARRAY = "ehplmn_override_string_array";
  
      /**
       * Override the PNN - a string array of comma-separated alpha long and short names:
       * "alpha_long1,alpha_short1".
       *
       * Reference: 3GPP TS 31.102 v15.2.0 Section 4.2.58 EF_PNN.
       * @hide
       */
      public static final String KEY_PNN_OVERRIDE_STRING_ARRAY = "pnn_override_string_array";
  
      /**
       * A string array of OPL records, each with comma-delimited data fields as follows:
       * "plmn1,lactac_start,lactac_end,index".
       *
       * Reference: 3GPP TS 31.102 v15.2.0 Section 4.2.59 EF_OPL.
       * @hide
       */
      public static final String KEY_OPL_OVERRIDE_STRING_ARRAY = "opl_override_opl_string_array";
  
      /**
       * Allow ERI rules to select a carrier name display string when using 3gpp2 access technologies.
       * If this bit is not set, the carrier name display string will be selected from the carrier
       * display name resolver which doesn't apply the ERI rules.
       *
       * @hide
       */
      public static final String KEY_ALLOW_ERI_BOOL = "allow_cdma_eri_bool";
  
      /**
       * If true, use the carrier display name(SPN and PLMN) from the carrier display name resolver.
       *
       * @hide
       */
      public static final String KEY_ENABLE_CARRIER_DISPLAY_NAME_RESOLVER_BOOL =
              "enable_carrier_display_name_resolver_bool";
  
      /**
       * String to override sim country iso.
       * Sim country iso is based on sim MCC which is coarse and doesn't work with dual IMSI SIM where
       * a SIM can have multiple MCC from different countries.
       * Instead, each sim carrier should have a single country code, apply per carrier based iso
       * code as an override. The overridden value can be read from
       * {@link TelephonyManager#getSimCountryIso()} and {@link SubscriptionInfo#getCountryIso()}
       *
       * @hide
       */
      public static final String KEY_SIM_COUNTRY_ISO_OVERRIDE_STRING =
              "sim_country_iso_override_string";
  
     /**
      * The Component Name of a carrier-provided CallScreeningService implementation. Telecom will
      * bind to {@link android.telecom.CallScreeningService} for ALL incoming calls and provide
      * the carrier
      * CallScreeningService with the opportunity to allow or block calls.
      * <p>
      * The String includes the package name/the class name.
      * Example:
      * <item>com.android.carrier/com.android.carrier.callscreeningserviceimpl</item>
      * <p>
      * Using {@link ComponentName#flattenToString()} to convert a ComponentName object to String.
      * Using {@link ComponentName#unflattenFromString(String)} to convert a String object to a
      * ComponentName.
      */
      public static final String KEY_CARRIER_CALL_SCREENING_APP_STRING = "call_screening_app";
  
      /**
       * Override the registered PLMN name using #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING.
       *
       * If true, then the registered PLMN name (only for CDMA/CDMA-LTE and only when not roaming)
       * will be #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING. If false, or if phone type is not
       * CDMA/CDMA-LTE or if roaming, then #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING will be ignored.
       * @hide
       */
      public static final String KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL =
              "cdma_home_registered_plmn_name_override_bool";
  
      /**
       * String to identify registered PLMN name in CarrierConfig app. This string overrides
       * registered PLMN name if #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL is true, phone type
       * is CDMA/CDMA-LTE and device is not in roaming state; otherwise, it will be ignored.
       * @hide
       */
      public static final String KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING =
              "cdma_home_registered_plmn_name_string";
  
      /**
       * If this is true, the SIM card (through Customer Service Profile EF file) will be able to
       * prevent manual operator selection. If false, this SIM setting will be ignored and manual
       * operator selection will always be available. See CPHS4_2.WW6, CPHS B.4.7.1 for more
       * information
       */
      public static final String KEY_CSP_ENABLED_BOOL = "csp_enabled_bool";
  
      /**
       * Allow user to add APNs
       */
      public static final String KEY_ALLOW_ADDING_APNS_BOOL = "allow_adding_apns_bool";
  
      /**
       * APN types that user is not allowed to modify
       * @hide
       */
      public static final String KEY_READ_ONLY_APN_TYPES_STRING_ARRAY =
              "read_only_apn_types_string_array";
  
      /**
       * APN fields that user is not allowed to modify
       * @hide
       */
      public static final String KEY_READ_ONLY_APN_FIELDS_STRING_ARRAY =
              "read_only_apn_fields_string_array";
  
      /**
       * Default value of APN types field if not specified by user when adding/modifying an APN.
       * @hide
       */
      public static final String KEY_APN_SETTINGS_DEFAULT_APN_TYPES_STRING_ARRAY =
              "apn_settings_default_apn_types_string_array";
  
      /**
       * Boolean indicating if intent for emergency call state changes should be broadcast
       * @hide
       */
      public static final String KEY_BROADCAST_EMERGENCY_CALL_STATE_CHANGES_BOOL =
              "broadcast_emergency_call_state_changes_bool";
  
      /**
        * Indicates whether STK LAUNCH_BROWSER command is disabled.
        * If {@code true}, then the browser will not be launched
        * on UI for the LAUNCH_BROWSER STK command.
        * @hide
        */
      public static final String KEY_STK_DISABLE_LAUNCH_BROWSER_BOOL =
              "stk_disable_launch_browser_bool";
  
      /**
       * Boolean indicating if show data RAT icon on status bar even when data is disabled
       * @hide
       */
      public static final String KEY_ALWAYS_SHOW_DATA_RAT_ICON_BOOL =
              "always_show_data_rat_icon_bool";
  
      /**
       * Boolean indicating if default data account should show LTE or 4G icon
       * @hide
       */
      public static final String KEY_SHOW_4G_FOR_LTE_DATA_ICON_BOOL =
              "show_4g_for_lte_data_icon_bool";
  
      /**
       * Boolean indicating if default data account should show 4G icon when in 3G.
       * @hide
       */
      public static final String KEY_SHOW_4G_FOR_3G_DATA_ICON_BOOL =
              "show_4g_for_3g_data_icon_bool";
  
      /**
       * Boolean indicating if lte+ icon should be shown if available
       * @hide
       */
      public static final String KEY_HIDE_LTE_PLUS_DATA_ICON_BOOL =
              "hide_lte_plus_data_icon_bool";
  
      /**
       * The string is used to filter redundant string from PLMN Network Name that's supplied by
       * specific carrier.
       *
       * @hide
       */
      public static final String KEY_OPERATOR_NAME_FILTER_PATTERN_STRING =
              "operator_name_filter_pattern_string";
  
      /**
       * The string is used to compare with operator name. If it matches the pattern then show
       * specific data icon.
       *
       * @hide
       */
      public static final String KEY_SHOW_CARRIER_DATA_ICON_PATTERN_STRING =
              "show_carrier_data_icon_pattern_string";
  
      /**
       * Boolean to decide whether to show precise call failed cause to user
       * @hide
       */
      public static final String KEY_SHOW_PRECISE_FAILED_CAUSE_BOOL =
              "show_precise_failed_cause_bool";
  
      /**
       * Boolean to decide whether lte is enabled.
       * @hide
       */
      public static final String KEY_LTE_ENABLED_BOOL = "lte_enabled_bool";
  
      /**
       * Boolean to decide whether TD-SCDMA is supported.
       * @hide
       */
      public static final String KEY_SUPPORT_TDSCDMA_BOOL = "support_tdscdma_bool";
  
      /**
       * A list of mcc/mnc that support TD-SCDMA for device when connect to the roaming network.
       * @hide
       */
      public static final String KEY_SUPPORT_TDSCDMA_ROAMING_NETWORKS_STRING_ARRAY =
              "support_tdscdma_roaming_networks_string_array";
  
      /**
       * Boolean to decide whether world mode is enabled.
       * @hide
       */
      public static final String KEY_WORLD_MODE_ENABLED_BOOL = "world_mode_enabled_bool";
  
      /**
       * Flatten {@link android.content.ComponentName} of the carrier's settings activity.
       * @hide
       */
      public static final String KEY_CARRIER_SETTINGS_ACTIVITY_COMPONENT_NAME_STRING =
              "carrier_settings_activity_component_name_string";
  
      // These variables are used by the MMS service and exposed through another API,
      // SmsManager. The variable names and string values are copied from there.
      public static final String KEY_MMS_ALIAS_ENABLED_BOOL = "aliasEnabled";
      public static final String KEY_MMS_ALLOW_ATTACH_AUDIO_BOOL = "allowAttachAudio";
      public static final String KEY_MMS_APPEND_TRANSACTION_ID_BOOL = "enabledTransID";
      public static final String KEY_MMS_GROUP_MMS_ENABLED_BOOL = "enableGroupMms";
      public static final String KEY_MMS_MMS_DELIVERY_REPORT_ENABLED_BOOL = "enableMMSDeliveryReports";
      public static final String KEY_MMS_MMS_ENABLED_BOOL = "enabledMMS";
      public static final String KEY_MMS_MMS_READ_REPORT_ENABLED_BOOL = "enableMMSReadReports";
      public static final String KEY_MMS_MULTIPART_SMS_ENABLED_BOOL = "enableMultipartSMS";
      public static final String KEY_MMS_NOTIFY_WAP_MMSC_ENABLED_BOOL = "enabledNotifyWapMMSC";
      public static final String KEY_MMS_SEND_MULTIPART_SMS_AS_SEPARATE_MESSAGES_BOOL = "sendMultipartSmsAsSeparateMessages";
      public static final String KEY_MMS_SHOW_CELL_BROADCAST_APP_LINKS_BOOL = "config_cellBroadcastAppLinks";
      public static final String KEY_MMS_SMS_DELIVERY_REPORT_ENABLED_BOOL = "enableSMSDeliveryReports";
      public static final String KEY_MMS_SUPPORT_HTTP_CHARSET_HEADER_BOOL = "supportHttpCharsetHeader";
      public static final String KEY_MMS_SUPPORT_MMS_CONTENT_DISPOSITION_BOOL = "supportMmsContentDisposition";
      public static final String KEY_MMS_ALIAS_MAX_CHARS_INT = "aliasMaxChars";
      public static final String KEY_MMS_ALIAS_MIN_CHARS_INT = "aliasMinChars";
      public static final String KEY_MMS_HTTP_SOCKET_TIMEOUT_INT = "httpSocketTimeout";
      public static final String KEY_MMS_MAX_IMAGE_HEIGHT_INT = "maxImageHeight";
      public static final String KEY_MMS_MAX_IMAGE_WIDTH_INT = "maxImageWidth";
      public static final String KEY_MMS_MAX_MESSAGE_SIZE_INT = "maxMessageSize";
      public static final String KEY_MMS_MESSAGE_TEXT_MAX_SIZE_INT = "maxMessageTextSize";
      public static final String KEY_MMS_RECIPIENT_LIMIT_INT = "recipientLimit";
      public static final String KEY_MMS_SMS_TO_MMS_TEXT_LENGTH_THRESHOLD_INT = "smsToMmsTextLengthThreshold";
      public static final String KEY_MMS_SMS_TO_MMS_TEXT_THRESHOLD_INT = "smsToMmsTextThreshold";
      public static final String KEY_MMS_SUBJECT_MAX_LENGTH_INT = "maxSubjectLength";
      public static final String KEY_MMS_EMAIL_GATEWAY_NUMBER_STRING = "emailGatewayNumber";
      public static final String KEY_MMS_HTTP_PARAMS_STRING = "httpParams";
      public static final String KEY_MMS_NAI_SUFFIX_STRING = "naiSuffix";
      public static final String KEY_MMS_UA_PROF_TAG_NAME_STRING = "uaProfTagName";
      public static final String KEY_MMS_UA_PROF_URL_STRING = "uaProfUrl";
      public static final String KEY_MMS_USER_AGENT_STRING = "userAgent";
      /** @hide */
      public static final String KEY_MMS_CLOSE_CONNECTION_BOOL = "mmsCloseConnection";
  
      /**
       * The flatten {@link android.content.ComponentName componentName} of the activity that can
       * setup the device and activate with the network per carrier requirements.
       *
       * e.g, com.google.android.carrierPackageName/.CarrierActivityName
       * @hide
       */
      @SystemApi
      public static final String KEY_CARRIER_SETUP_APP_STRING = "carrier_setup_app_string";
  
      /**
       * Defines carrier-specific actions which act upon
       * com.android.internal.telephony.CARRIER_SIGNAL_REDIRECTED, used for customization of the
       * default carrier app
       * Format: "CARRIER_ACTION_IDX, ..."
       * Where {@code CARRIER_ACTION_IDX} is an integer defined in
       * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
       * Example:
       * {@link com.android.carrierdefaultapp.CarrierActionUtils#CARRIER_ACTION_DISABLE_METERED_APNS
       * disable_metered_apns}
       * @hide
       */
      @UnsupportedAppUsage
      public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_REDIRECTION_STRING_ARRAY =
              "carrier_default_actions_on_redirection_string_array";
  
      /**
       * Defines carrier-specific actions which act upon
       * com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED
       * and configured signal args:
       * {@link com.android.internal.telephony.TelephonyIntents#EXTRA_APN_TYPE_KEY apnType},
       * {@link com.android.internal.telephony.TelephonyIntents#EXTRA_ERROR_CODE_KEY errorCode}
       * used for customization of the default carrier app
       * Format:
       * {
       *     "APN_1, ERROR_CODE_1 : CARRIER_ACTION_IDX_1, CARRIER_ACTION_IDX_2...",
       *     "APN_1, ERROR_CODE_2 : CARRIER_ACTION_IDX_1 "
       * }
       * Where {@code APN_1} is a string defined in
       * {@link com.android.internal.telephony.PhoneConstants PhoneConstants}
       * Example: "default"
       *
       * {@code ERROR_CODE_1} is an integer defined in
       * {@link DataFailCause DcFailure}
       * Example:
       * {@link DataFailCause#MISSING_UNKNOWN_APN}
       *
       * {@code CARRIER_ACTION_IDX_1} is an integer defined in
       * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
       * Example:
       * {@link com.android.carrierdefaultapp.CarrierActionUtils#CARRIER_ACTION_DISABLE_METERED_APNS}
       * @hide
       */
      public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_DCFAILURE_STRING_ARRAY =
              "carrier_default_actions_on_dcfailure_string_array";
  
      /**
       * Defines carrier-specific actions which act upon
       * com.android.internal.telephony.CARRIER_SIGNAL_RESET, used for customization of the
       * default carrier app
       * Format: "CARRIER_ACTION_IDX, ..."
       * Where {@code CARRIER_ACTION_IDX} is an integer defined in
       * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
       * Example:
       * {@link com.android.carrierdefaultapp.CarrierActionUtils
       * #CARRIER_ACTION_CANCEL_ALL_NOTIFICATIONS clear all notifications on reset}
       * @hide
       */
      public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_RESET =
              "carrier_default_actions_on_reset_string_array";
  
      /**
       * Defines carrier-specific actions which act upon
       * com.android.internal.telephony.CARRIER_SIGNAL_DEFAULT_NETWORK_AVAILABLE,
       * used for customization of the default carrier app
       * Format:
       * {
       *     "true : CARRIER_ACTION_IDX_1",
       *     "false: CARRIER_ACTION_IDX_2"
       * }
       * Where {@code true} is a boolean indicates default network available/unavailable
       * Where {@code CARRIER_ACTION_IDX} is an integer defined in
       * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
       * Example:
       * {@link com.android.carrierdefaultapp.CarrierActionUtils
       * #CARRIER_ACTION_ENABLE_DEFAULT_URL_HANDLER enable the app as the default URL handler}
       * @hide
       */
      public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_DEFAULT_NETWORK_AVAILABLE =
              "carrier_default_actions_on_default_network_available_string_array";
      /**
       * Defines a list of acceptable redirection url for default carrier app
       * @hides
       */
      public static final String KEY_CARRIER_DEFAULT_REDIRECTION_URL_STRING_ARRAY =
              "carrier_default_redirection_url_string_array";
  
      /**
       * Each config includes the componentName of the carrier app, followed by a list of interesting
       * signals(declared in the manifest) which could wake up the app.
       * @see com.android.internal.telephony.TelephonyIntents
       * Example:
       * <item>com.google.android.carrierAPK/.CarrierSignalReceiverA:
       * com.android.internal.telephony.CARRIER_SIGNAL_REDIRECTED,
       * com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
       * </item>
       * <item>com.google.android.carrierAPK/.CarrierSignalReceiverB:
       * com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
       * </item>
       * @hide
       */
      public static final String KEY_CARRIER_APP_WAKE_SIGNAL_CONFIG_STRING_ARRAY =
              "carrier_app_wake_signal_config";
  
      /**
       * Each config includes the componentName of the carrier app, followed by a list of interesting
       * signals for the app during run-time. The list of signals(intents) are targeting on run-time
       * broadcast receivers only, aiming to avoid unnecessary wake-ups and should not be declared in
       * the app's manifest.
       * @see com.android.internal.telephony.TelephonyIntents
       * Example:
       * <item>com.google.android.carrierAPK/.CarrierSignalReceiverA:
       * com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED,
       * com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
       * </item>
       * <item>com.google.android.carrierAPK/.CarrierSignalReceiverB:
       * com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED
       * </item>
       * @hide
       */
      public static final String KEY_CARRIER_APP_NO_WAKE_SIGNAL_CONFIG_STRING_ARRAY =
              "carrier_app_no_wake_signal_config";
  
      /**
       * Determines whether the carrier app needed to be involved when users try to finish setting up
       * the SIM card to get network service.
       * @hide
       */
      public static final String KEY_CARRIER_APP_REQUIRED_DURING_SIM_SETUP_BOOL =
              "carrier_app_required_during_setup_bool";
  
      /**
       * Default value for {@link Settings.Global#DATA_ROAMING}
       * @hide
       */
      public static final String KEY_CARRIER_DEFAULT_DATA_ROAMING_ENABLED_BOOL =
              "carrier_default_data_roaming_enabled_bool";
  
      /**
       * Determines whether the carrier supports making non-emergency phone calls while the phone is
       * in emergency callback mode.  Default value is {@code true}, meaning that non-emergency calls
       * are allowed in emergency callback mode.
       */
      public static final String KEY_ALLOW_NON_EMERGENCY_CALLS_IN_ECM_BOOL =
              "allow_non_emergency_calls_in_ecm_bool";
  
      /**
       * Time that the telephony framework stays in "emergency SMS mode" after an emergency SMS is
       * sent to the network. This is used by carriers to configure the time
       * {@link TelephonyManager#isInEmergencySmsMode()} will be true after an emergency SMS is sent.
       * This is used by GNSS to override user location permissions so that the carrier network can
       * get the user's location for emergency services.
       *
       * The default is 0, which means that this feature is disabled. The maximum value for this timer
       * is 300000 mS (5 minutes).
       *
       * @hide
       */
      public static final String KEY_EMERGENCY_SMS_MODE_TIMER_MS_INT =
              "emergency_sms_mode_timer_ms_int";
  
      /**
       * Flag indicating whether to allow carrier video calls to emergency numbers.
       * When {@code true}, video calls to emergency numbers will be allowed.  When {@code false},
       * video calls to emergency numbers will be initiated as audio-only calls instead.
       */
      public static final String KEY_ALLOW_EMERGENCY_VIDEO_CALLS_BOOL =
              "allow_emergency_video_calls_bool";
  
      /**
       * Flag indicating whether the carrier supports RCS presence indication for video calls.  When
       * {@code true}, the carrier supports RCS presence indication for video calls.  When presence
       * is supported, the device should use the
       * {@link android.provider.ContactsContract.Data#CARRIER_PRESENCE} bit mask and set the
       * {@link android.provider.ContactsContract.Data#CARRIER_PRESENCE_VT_CAPABLE} bit to indicate
       * whether each contact supports video calling.  The UI is made aware that presence is enabled
       * via {@link android.telecom.PhoneAccount#CAPABILITY_VIDEO_CALLING_RELIES_ON_PRESENCE}
       * and can choose to hide or show the video calling icon based on whether a contact supports
       * video.
       */
      public static final String KEY_USE_RCS_PRESENCE_BOOL = "use_rcs_presence_bool";
  
      /**
       * The duration in seconds that platform call and message blocking is disabled after the user
       * contacts emergency services. Platform considers values for below cases:
       *  1) 0 <= VALUE <= 604800(one week): the value will be used as the duration directly.
       *  2) VALUE > 604800(one week): will use the default value as duration instead.
       *  3) VALUE < 0: block will be disabled forever until user re-eanble block manually,
       *     the suggested value to disable forever is -1.
       * See {@code android.provider.BlockedNumberContract#notifyEmergencyContact(Context)}
       * See {@code android.provider.BlockedNumberContract#isBlocked(Context, String)}.
       */
      public static final String KEY_DURATION_BLOCKING_DISABLED_AFTER_EMERGENCY_INT =
              "duration_blocking_disabled_after_emergency_int";
  
      /**
       * Determines whether to enable enhanced call blocking feature on the device.
       * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_UNREGISTERED
       * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_PRIVATE
       * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_PAYPHONE
       * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_UNKNOWN
       *
       * <p>
       * 1. For Single SIM(SS) device, it can be customized in both carrier_config_mccmnc.xml
       *    and vendor.xml.
       * <p>
       * 2. For Dual SIM(DS) device, it should be customized in vendor.xml, since call blocking
       *    function is used regardless of SIM.
       * <p>
       * If {@code true} enable enhanced call blocking feature on the device, {@code false} otherwise.
       * @hide
       */
      public static final String KEY_SUPPORT_ENHANCED_CALL_BLOCKING_BOOL =
              "support_enhanced_call_blocking_bool";
  
      /**
       * For carriers which require an empty flash to be sent before sending the normal 3-way calling
       * flash, the duration in milliseconds of the empty flash to send.  When {@code 0}, no empty
       * flash is sent.
       */
      public static final String KEY_CDMA_3WAYCALL_FLASH_DELAY_INT = "cdma_3waycall_flash_delay_int";
  
      /**
       * The CDMA roaming mode (aka CDMA system select).
       *
       * <p>The value should be one of the CDMA_ROAMING_MODE_ constants in {@link TelephonyManager}.
       * Values other than {@link TelephonyManager#CDMA_ROAMING_MODE_RADIO_DEFAULT} (which is the
       * default) will take precedence over user selection.
       *
       * @see TelephonyManager#CDMA_ROAMING_MODE_RADIO_DEFAULT
       * @see TelephonyManager#CDMA_ROAMING_MODE_HOME
       * @see TelephonyManager#CDMA_ROAMING_MODE_AFFILIATED
       * @see TelephonyManager#CDMA_ROAMING_MODE_ANY
       */
      public static final String KEY_CDMA_ROAMING_MODE_INT = "cdma_roaming_mode_int";
  
  
      /**
       * Boolean indicating if support is provided for directly dialing FDN number from FDN list.
       * If false, this feature is not supported.
       * @hide
       */
      public static final String KEY_SUPPORT_DIRECT_FDN_DIALING_BOOL =
              "support_direct_fdn_dialing_bool";
  
      /**
       * Report IMEI as device id even if it's a CDMA/LTE phone.
       *
       * @hide
       */
      public static final String KEY_FORCE_IMEI_BOOL = "force_imei_bool";
  
      /**
       * The families of Radio Access Technologies that will get clustered and ratcheted,
       * ie, we will report transitions up within the family, but not down until we change
       * cells.  This prevents flapping between base technologies and higher techs that are
       * granted on demand within the cell.
       * @hide
       */
      public static final String KEY_RATCHET_RAT_FAMILIES =
              "ratchet_rat_families";
  
      /**
       * Flag indicating whether some telephony logic will treat a call which was formerly a video
       * call as if it is still a video call.  When {@code true}:
       * <p>
       * Logic which will automatically drop a video call which takes place over WIFI when a
       * voice call is answered (see {@link #KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL}.
       * <p>
       * Logic which determines whether the user can use TTY calling.
       */
      public static final String KEY_TREAT_DOWNGRADED_VIDEO_CALLS_AS_VIDEO_CALLS_BOOL =
              "treat_downgraded_video_calls_as_video_calls_bool";
  
      /**
       * When {@code true}, if the user is in an ongoing video call over WIFI and answers an incoming
       * audio call, the video call will be disconnected before the audio call is answered.  This is
       * in contrast to the usual expected behavior where a foreground video call would be put into
       * the background and held when an incoming audio call is answered.
       */
      public static final String KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL =
              "drop_video_call_when_answering_audio_call_bool";
  
      /**
       * Flag indicating whether the carrier supports merging wifi calls when VoWIFI is disabled.
       * This can happen in the case of a carrier which allows offloading video calls to WIFI
       * separately of whether voice over wifi is enabled.  In such a scenario when two video calls
       * are downgraded to voice, they remain over wifi.  However, if VoWIFI is disabled, these calls
       * cannot be merged.
       */
      public static final String KEY_ALLOW_MERGE_WIFI_CALLS_WHEN_VOWIFI_OFF_BOOL =
              "allow_merge_wifi_calls_when_vowifi_off_bool";
  
      /**
       * Flag indicating whether the carrier supports the Hold command while in an IMS call.
       * <p>
       * The device configuration value {@code config_device_respects_hold_carrier_config} ultimately
       * controls whether this carrier configuration option is used.  Where
       * {@code config_device_respects_hold_carrier_config} is false, the value of the
       * {@link #KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL} carrier configuration option is ignored.
       * @hide
       */
      public static final String KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL = "allow_hold_in_ims_call";
  
      /**
       * Flag indicating whether the carrier supports call deflection for an incoming IMS call.
       * @hide
       */
      public static final String KEY_CARRIER_ALLOW_DEFLECT_IMS_CALL_BOOL =
              "carrier_allow_deflect_ims_call_bool";
  
      /**
       * Flag indicating whether the carrier always wants to play an "on-hold" tone when a call has
       * been remotely held.
       * <p>
       * When {@code true}, if the IMS stack indicates that the call session has been held, a signal
       * will be sent from Telephony to play an audible "on-hold" tone played to the user.
       * When {@code false}, a hold tone will only be played if the audio session becomes inactive.
       * @hide
       */
      public static final String KEY_ALWAYS_PLAY_REMOTE_HOLD_TONE_BOOL =
              "always_play_remote_hold_tone_bool";
  
      /**
       * When true, the Telephony stack will automatically turn off airplane mode and retry a wifi
       * emergency call over the cell network if the initial attempt at dialing was met with a SIP 308
       * error.
       * @hide
       */
      public static final String KEY_AUTO_RETRY_FAILED_WIFI_EMERGENCY_CALL =
              "auto_retry_failed_wifi_emergency_call";
  
      /**
       * When true, indicates that adding a call is disabled when there is an ongoing video call
       * or when there is an ongoing call on wifi which was downgraded from video and VoWifi is
       * turned off.
       */
      public static final String KEY_ALLOW_ADD_CALL_DURING_VIDEO_CALL_BOOL =
              "allow_add_call_during_video_call";
  
      /**
       * When true, indicates that the HD audio icon in the in-call screen should not be shown for
       * VoWifi calls.
       * @hide
       */
      public static final String KEY_WIFI_CALLS_CAN_BE_HD_AUDIO = "wifi_calls_can_be_hd_audio";
  
      /**
       * When true, indicates that the HD audio icon in the in-call screen should not be shown for
       * video calls.
       * @hide
       */
      public static final String KEY_VIDEO_CALLS_CAN_BE_HD_AUDIO = "video_calls_can_be_hd_audio";
  
      /**
       * When true, indicates that the HD audio icon in the in-call screen should be shown for
       * GSM/CDMA calls.
       * @hide
       */
      public static final String KEY_GSM_CDMA_CALLS_CAN_BE_HD_AUDIO =
              "gsm_cdma_calls_can_be_hd_audio";
  
      /**
       * Whether system apps are allowed to use fallback if carrier video call is not available.
       * Defaults to {@code true}.
       *
       * @hide
       */
      public static final String KEY_ALLOW_VIDEO_CALLING_FALLBACK_BOOL =
              "allow_video_calling_fallback_bool";
  
      /**
       * Defines operator-specific {@link ImsReasonInfo} mappings.
       *
       * Format: "ORIGINAL_CODE|MESSAGE|NEW_CODE"
       * Where {@code ORIGINAL_CODE} corresponds to a {@link ImsReasonInfo#getCode()} code,
       * {@code MESSAGE} corresponds to an expected {@link ImsReasonInfo#getExtraMessage()} string,
       * and {@code NEW_CODE} is the new {@code ImsReasonInfo#CODE_*} which this combination of
       * original code and message shall be remapped to.
       *
       * Note: If {@code *} is specified for the original code, any ImsReasonInfo with the matching
       * {@code MESSAGE} will be remapped to {@code NEW_CODE}.
       *
       * Example: "501|call completion elsewhere|1014"
       * When the {@link ImsReasonInfo#getCode()} is {@link ImsReasonInfo#CODE_USER_TERMINATED} and
       * the {@link ImsReasonInfo#getExtraMessage()} is {@code "call completion elsewhere"},
       * {@link ImsReasonInfo#CODE_ANSWERED_ELSEWHERE} shall be used as the {@link ImsReasonInfo}
       * code instead.
       * @hide
       */
      public static final String KEY_IMS_REASONINFO_MAPPING_STRING_ARRAY =
              "ims_reasoninfo_mapping_string_array";
  
      /**
       * When {@code false}, use default title for Enhanced 4G LTE Mode settings.
       * When {@code true}, use the variant.
       * @hide
       * @deprecated use {@link #KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT}.
       */
      @Deprecated
      public static final String KEY_ENHANCED_4G_LTE_TITLE_VARIANT_BOOL =
              "enhanced_4g_lte_title_variant_bool";
  
      /**
       * The index indicates the carrier specified title string of Enahnce 4G LTE Mode settings.
       * Default value is 0, which indicates the default title string.
       * @hide
       */
      public static final String KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT =
              "enhanced_4g_lte_title_variant_int";
  
      /**
       * Indicates whether the carrier wants to notify the user when handover of an LTE video call to
       * WIFI fails.
       * <p>
       * When {@code true}, if a video call starts on LTE and the modem reports a failure to handover
       * the call to WIFI or if no handover success is reported within 60 seconds of call initiation,
       * the {@link android.telephony.TelephonyManager#EVENT_HANDOVER_TO_WIFI_FAILED} event is raised
       * on the connection.
       * @hide
       */
      public static final String KEY_NOTIFY_VT_HANDOVER_TO_WIFI_FAILURE_BOOL =
              "notify_vt_handover_to_wifi_failure_bool";
  
      /**
       * A upper case list of CNAP names that are unhelpful to the user for distinguising calls and
       * should be filtered out of the CNAP information. This includes CNAP names such as "WIRELESS
       * CALLER" or "UNKNOWN NAME". By default, if there are no filtered names for this carrier, null
       * is returned.
       * @hide
       */
      public static final String KEY_FILTERED_CNAP_NAMES_STRING_ARRAY = "filtered_cnap_names_string_array";
  
      /**
       * The RCS configuration server URL. This URL is used to initiate RCS provisioning.
       */
      public static final String KEY_RCS_CONFIG_SERVER_URL_STRING = "rcs_config_server_url_string";
  
      /**
       * Determine whether user can change Wi-Fi Calling preference in roaming.
       * {@code false} - roaming preference cannot be changed by user independently. If
       *                 {@link #KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL} is false,
       *                 {@link #KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT} is used as the default
       *                 value. If {@link #KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL} is
       *                 true, roaming preference is the same as home preference and
       *                 {@link #KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT} is used as the default value.
       * {@code true}  - roaming preference can be changed by user independently if
       *                 {@link #KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL} is false. If
       *                 {@link #KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL} is true, this
       *                 configuration is ignored and roaming preference cannot be changed.
       * @hide
       */
      public static final String KEY_EDITABLE_WFC_ROAMING_MODE_BOOL =
              "editable_wfc_roaming_mode_bool";
  
      /**
       * Flag specifying wether to show blocking pay phone option in blocked numbers screen. Only show
       * the option if payphone call presentation represents in the carrier's region.
       * @hide
       */
      public static final java.lang.String KEY_SHOW_BLOCKING_PAY_PHONE_OPTION_BOOL =
              "show_blocking_pay_phone_option_bool";
  
      /**
       * Flag specifying whether the carrier will use the WFC home network mode in roaming network.
       * {@code false} - roaming preference can be selected separately from the home preference.
       * {@code true}  - roaming preference is the same as home preference and
       *                 {@link #KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT} is used as the default value.
       * @hide
       */
      public static final String KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL =
              "use_wfc_home_network_mode_in_roaming_network_bool";
  
      /**
       * Flag specifying whether the carrier is allowed to use metered network to download a
       * certificate of Carrier-WiFi.
       * {@code false} - default value.
       *
       * @hide
       */
      public static final String KEY_ALLOW_METERED_NETWORK_FOR_CERT_DOWNLOAD_BOOL =
              "allow_metered_network_for_cert_download_bool";
  
      /**
       * Carrier specified WiFi networks.
       * @hide
       */
      public static final String KEY_CARRIER_WIFI_STRING_ARRAY = "carrier_wifi_string_array";
  
      /**
       * Time delay (in ms) after which we show the notification to switch the preferred
       * network.
       * @hide
       */
      public static final String KEY_PREF_NETWORK_NOTIFICATION_DELAY_INT =
              "network_notification_delay_int";
  
      /**
       * Time delay (in ms) after which we show the notification for emergency calls,
       * while the device is registered over WFC. Default value is -1, which indicates
       * that this notification is not pertinent for a particular carrier. We've added a delay
       * to prevent false positives.
       * @hide
       */
      public static final String KEY_EMERGENCY_NOTIFICATION_DELAY_INT =
              "emergency_notification_delay_int";
  
      /**
       * When {@code true}, the carrier allows the user of the
       * {@link TelephonyManager#sendUssdRequest(String, TelephonyManager.UssdResponseCallback,
       * Handler)} API to perform USSD requests.  {@code True} by default.
       * @hide
       */
      public static final String KEY_ALLOW_USSD_REQUESTS_VIA_TELEPHONY_MANAGER_BOOL =
              "allow_ussd_requests_via_telephony_manager_bool";
  
      /**
       * Indicates whether the carrier supports 3gpp call forwarding MMI codes while roaming. If
       * false, the user will be notified that call forwarding is not available when the MMI code
       * fails.
       */
      public static final String KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL =
          "support_3gpp_call_forwarding_while_roaming_bool";
  
      /**
       * Boolean indicating whether to display voicemail number as default call forwarding number in
       * call forwarding settings.
       * If true, display vm number when cf number is null.
       * If false, display the cf number from network.
       * By default this value is false.
       * @hide
       */
      public static final String KEY_DISPLAY_VOICEMAIL_NUMBER_AS_DEFAULT_CALL_FORWARDING_NUMBER_BOOL =
              "display_voicemail_number_as_default_call_forwarding_number";
  
      /**
       * When {@code true}, the user will be notified when they attempt to place an international call
       * when the call is placed using wifi calling.
       * @hide
       */
      public static final String KEY_NOTIFY_INTERNATIONAL_CALL_ON_WFC_BOOL =
              "notify_international_call_on_wfc_bool";
  
      /**
       * Flag to hide Preset APN details. If true, user cannot enter ApnEditor view of Preset APN,
       * and cannot view details of the APN. If false, user can enter ApnEditor view of Preset APN.
       * Default value is false.
       */
      public static final String KEY_HIDE_PRESET_APN_DETAILS_BOOL = "hide_preset_apn_details_bool";
  
      /**
       * Flag specifying whether to show an alert dialog for video call charges.
       * By default this value is {@code false}.
       * @hide
       */
      public static final String KEY_SHOW_VIDEO_CALL_CHARGES_ALERT_DIALOG_BOOL =
              "show_video_call_charges_alert_dialog_bool";
  
      /**
       * An array containing custom call forwarding number prefixes that will be blocked while the
       * device is reporting that it is roaming. By default, there are no custom call
       * forwarding prefixes and none of these numbers will be filtered. If one or more entries are
       * present, the system will not complete the call and display an error message.
       *
       * To display a message to the user when call forwarding fails for 3gpp MMI codes while roaming,
       * use the {@link #KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL} option instead.
       */
      public static final String KEY_CALL_FORWARDING_BLOCKS_WHILE_ROAMING_STRING_ARRAY =
              "call_forwarding_blocks_while_roaming_string_array";
  
      /**
       * The day of the month (1-31) on which the data cycle rolls over.
       * <p>
       * If the current month does not have this day, the cycle will roll over at
       * the start of the next month.
       * <p>
       * This setting may be still overridden by explicit user choice. By default,
       * the platform value will be used.
       */
      public static final String KEY_MONTHLY_DATA_CYCLE_DAY_INT =
              "monthly_data_cycle_day_int";
  
      /**
       * When {@link #KEY_MONTHLY_DATA_CYCLE_DAY_INT}, {@link #KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG},
       * or {@link #KEY_DATA_WARNING_THRESHOLD_BYTES_LONG} are set to this value, the platform default
       * value will be used for that key.
       *
       * @hide
       */
      @Deprecated
      public static final int DATA_CYCLE_USE_PLATFORM_DEFAULT = -1;
  
      /**
       * Flag indicating that a data cycle threshold should be disabled.
       * <p>
       * If {@link #KEY_DATA_WARNING_THRESHOLD_BYTES_LONG} is set to this value, the platform's
       * default data warning, if one exists, will be disabled. A user selected data warning will not
       * be overridden.
       * <p>
       * If {@link #KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG} is set to this value, the platform's
       * default data limit, if one exists, will be disabled. A user selected data limit will not be
       * overridden.
       */
      public static final int DATA_CYCLE_THRESHOLD_DISABLED = -2;
  
      /**
       * Controls the data usage warning.
       * <p>
       * If the user uses more than this amount of data in their billing cycle, as defined by
       * {@link #KEY_MONTHLY_DATA_CYCLE_DAY_INT}, the user will be alerted about the usage.
       * If the value is set to {@link #DATA_CYCLE_THRESHOLD_DISABLED}, the data usage warning will
       * be disabled.
       * <p>
       * This setting may be overridden by explicit user choice. By default, the platform value
       * will be used.
       */
      public static final String KEY_DATA_WARNING_THRESHOLD_BYTES_LONG =
              "data_warning_threshold_bytes_long";
  
      /**
       * Controls if the device should automatically notify the user as they reach
       * their cellular data warning. When set to {@code false} the carrier is
       * expected to have implemented their own notification mechanism.
       * @hide
       */
      public static final String KEY_DATA_WARNING_NOTIFICATION_BOOL =
              "data_warning_notification_bool";
  
      /**
       * Controls if the device should automatically warn the user that sim voice & data function
       * might be limited due to dual sim scenario. When set to {@true} display the notification,
       * {@code false} otherwise.
       * @hide
       */
      public static final String KEY_LIMITED_SIM_FUNCTION_NOTIFICATION_FOR_DSDS_BOOL =
              "limited_sim_function_notification_for_dsds_bool";
  
      /**
       * Controls the cellular data limit.
       * <p>
       * If the user uses more than this amount of data in their billing cycle, as defined by
       * {@link #KEY_MONTHLY_DATA_CYCLE_DAY_INT}, cellular data will be turned off by the user's
       * phone. If the value is set to {@link #DATA_CYCLE_THRESHOLD_DISABLED}, the data limit will be
       * disabled.
       * <p>
       * This setting may be overridden by explicit user choice. By default, the platform value
       * will be used.
       */
      public static final String KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG =
              "data_limit_threshold_bytes_long";
  
      /**
       * Controls if the device should automatically notify the user as they reach
       * their cellular data limit. When set to {@code false} the carrier is
       * expected to have implemented their own notification mechanism.
       * @hide
       */
      public static final String KEY_DATA_LIMIT_NOTIFICATION_BOOL =
              "data_limit_notification_bool";
  
      /**
       * Controls if the device should automatically notify the user when rapid
       * cellular data usage is observed. When set to {@code false} the carrier is
       * expected to have implemented their own notification mechanism.
       * @hide
       */
      public static final String KEY_DATA_RAPID_NOTIFICATION_BOOL =
              "data_rapid_notification_bool";
  
      /**
       * Offset to be reduced from rsrp threshold while calculating signal strength level.
       * @hide
       */
      public static final String KEY_LTE_EARFCNS_RSRP_BOOST_INT = "lte_earfcns_rsrp_boost_int";
  
      /**
       * List of EARFCN (E-UTRA Absolute Radio Frequency Channel Number,
       * Reference: 3GPP TS 36.104 5.4.3) inclusive ranges on which lte_rsrp_boost_int
       * will be applied. Format of the String array is expected to be {"erafcn1_start-earfcn1_end",
       * "earfcn2_start-earfcn2_end" ... }
       * @hide
       */
      public static final String KEY_BOOSTED_LTE_EARFCNS_STRING_ARRAY =
              "boosted_lte_earfcns_string_array";
  
      /**
       * Determine whether to use only RSRP for the number of LTE signal bars.
       * @hide
       */
      // FIXME: this key and related keys must not be exposed without a consistent philosophy for
      // all RATs.
      public static final String KEY_USE_ONLY_RSRP_FOR_LTE_SIGNAL_BAR_BOOL =
              "use_only_rsrp_for_lte_signal_bar_bool";
  
      /**
       * String array of default bandwidth values per network type.
       * The entries should be of form "network_name:downstream,upstream", with values in Kbps.
       * @hide
       */
      public static final String KEY_BANDWIDTH_STRING_ARRAY = "bandwidth_string_array";
  
      /**
       * For NR (non-standalone), whether to use the LTE value instead of NR value as the default for
       * upstream bandwidth. Downstream bandwidth will still use the NR value as the default.
       * @hide
       */
      public static final String KEY_BANDWIDTH_NR_NSA_USE_LTE_VALUE_FOR_UPSTREAM_BOOL =
              "bandwidth_nr_nsa_use_lte_value_for_upstream_bool";
  
      /**
       * Key identifying if voice call barring notification is required to be shown to the user.
       * @hide
       */
      @UnsupportedAppUsage
      public static final String KEY_DISABLE_VOICE_BARRING_NOTIFICATION_BOOL =
              "disable_voice_barring_notification_bool";
  
      /**
       * List of operators considered non-roaming which won't show roaming icon.
       * <p>
       * Can use mcc or mcc+mnc as item. For example, 302 or 21407.
       * If operators, 21404 and 21407, make roaming agreements, users of 21404 should not see
       * the roaming icon as using 21407 network.
       * @hide
       */
      public static final String KEY_NON_ROAMING_OPERATOR_STRING_ARRAY =
              "non_roaming_operator_string_array";
  
      /**
       * List of operators considered roaming with the roaming icon.
       * <p>
       * Can use mcc or mcc+mnc as item. For example, 302 or 21407.
       * If operators, 21404 and 21407, make roaming agreements, users of 21404 should see
       * the roaming icon as using 21407 network.
       * <p>
       * A match on this supersedes a match on {@link #KEY_NON_ROAMING_OPERATOR_STRING_ARRAY}.
       * @hide
       */
      public static final String KEY_ROAMING_OPERATOR_STRING_ARRAY =
              "roaming_operator_string_array";
  
      /**
       * URL from which the proto containing the public key of the Carrier used for
       * IMSI encryption will be downloaded.
       * @hide
       */
      public static final String IMSI_KEY_DOWNLOAD_URL_STRING = "imsi_key_download_url_string";
  
      /**
       * Identifies if the key is available for WLAN or EPDG or both. The value is a bitmask.
       * 0 indicates that neither EPDG or WLAN is enabled.
       * 1 indicates that key type {@link TelephonyManager#KEY_TYPE_EPDG} is enabled.
       * 2 indicates that key type {@link TelephonyManager#KEY_TYPE_WLAN} is enabled.
       * 3 indicates that both are enabled.
       * @hide
       */
      public static final String IMSI_KEY_AVAILABILITY_INT = "imsi_key_availability_int";
  
  
      /**
       * Key identifying if the CDMA Caller ID presentation and suppression MMI codes
       * should be converted to 3GPP CLIR codes when a multimode (CDMA+UMTS+LTE) device is roaming
       * on a 3GPP network. Specifically *67<number> will be converted to #31#<number> and
       * *82<number> will be converted to *31#<number> before dialing a call when this key is
       * set TRUE and device is roaming on a 3GPP network.
       * @hide
       */
      public static final String KEY_CONVERT_CDMA_CALLER_ID_MMI_CODES_WHILE_ROAMING_ON_3GPP_BOOL =
              "convert_cdma_caller_id_mmi_codes_while_roaming_on_3gpp_bool";
  
      /**
       * Flag specifying whether IMS registration state menu is shown in Status Info setting,
       * default to false.
       * @hide
       */
      public static final String KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL =
              "show_ims_registration_status_bool";
  
      /**
       * Flag indicating whether the carrier supports RTT over IMS.
       */
      public static final String KEY_RTT_SUPPORTED_BOOL = "rtt_supported_bool";
  
      /**
       * Boolean flag indicating whether the carrier supports TTY.
       * <p>
       * Note that {@link #KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL} controls availability of TTY over
       * VoLTE; if {@link #KEY_TTY_SUPPORTED_BOOL} is disabled, then
       * {@link #KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL} is also implicitly disabled.
       * <p>
       * {@link TelecomManager#isTtySupported()} should be used to determine if a device supports TTY,
       * and this carrier config key should be used to see if the current carrier supports it.
       */
      public static final String KEY_TTY_SUPPORTED_BOOL = "tty_supported_bool";
  
      /**
       * Indicates if the carrier supports auto-upgrading a call to RTT when receiving a call from a
       * RTT-supported device.
       * @hide
       */
      public static final String KEY_RTT_AUTO_UPGRADE_BOOL = "rtt_auto_upgrade_bool";
  
      /**
       * Indicates if the carrier supports RTT during a video call.
       * @hide
       */
      public static final String KEY_RTT_SUPPORTED_FOR_VT_BOOL = "rtt_supported_for_vt_bool";
  
      /**
       * Indicates if the carrier supports upgrading a voice call to an RTT call during the call.
       * @hide
       */
      public static final String KEY_RTT_UPGRADE_SUPPORTED_BOOL = "rtt_upgrade_supported_bool";
  
      /**
       * Indicates if the carrier supports downgrading a RTT call to a voice call during the call.
       * @hide
       */
      public static final String KEY_RTT_DOWNGRADE_SUPPORTED_BOOL = "rtt_downgrade_supported_bool";
  
      /**
       * Indicates if the TTY HCO and VCO options should be hidden in the accessibility menu
       * if the device is capable of RTT.
       * @hide
       */
      public static final String KEY_HIDE_TTY_HCO_VCO_WITH_RTT_BOOL = "hide_tty_hco_vco_with_rtt";
  
      /**
       * The flag to disable the popup dialog which warns the user of data charges.
       * @hide
       */
      public static final String KEY_DISABLE_CHARGE_INDICATION_BOOL =
              "disable_charge_indication_bool";
  
      /**
       * Boolean indicating whether to skip the call forwarding (CF) fail-to-disable dialog.
       * The logic used to determine whether we succeeded in disabling is carrier specific,
       * so the dialog may not always be accurate.
       * {@code false} - show CF fail-to-disable dialog.
       * {@code true}  - skip showing CF fail-to-disable dialog.
       *
       * @hide
       */
      public static final String KEY_SKIP_CF_FAIL_TO_DISABLE_DIALOG_BOOL =
              "skip_cf_fail_to_disable_dialog_bool";
  
      /**
       * Flag specifying whether operator supports including no reply condition timer option on
       * CFNRy (3GPP TS 24.082 3: Call Forwarding on No Reply) in the call forwarding settings UI.
       * {@code true}  - include no reply condition timer option on CFNRy
       * {@code false} - don't include no reply condition timer option on CFNRy
       *
       * @hide
       */
      public static final String KEY_SUPPORT_NO_REPLY_TIMER_FOR_CFNRY_BOOL =
              "support_no_reply_timer_for_cfnry_bool";
  
      /**
       * List of the FAC (feature access codes) to dial as a normal call.
       * @hide
       */
      public static final String KEY_FEATURE_ACCESS_CODES_STRING_ARRAY =
              "feature_access_codes_string_array";
  
      /**
       * Determines if the carrier wants to identify high definition calls in the call log.
       * @hide
       */
      public static final String KEY_IDENTIFY_HIGH_DEFINITION_CALLS_IN_CALL_LOG_BOOL =
              "identify_high_definition_calls_in_call_log_bool";
  
      /**
       * Flag specifying whether to use the {@link ServiceState} roaming status, which can be
       * affected by other carrier configs (e.g.
       * {@link #KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY}), when setting the SPN display.
       * <p>
       * If {@code true}, the SPN display uses {@link ServiceState#getRoaming}.
       * If {@code false} the SPN display checks if the current MCC/MNC is different from the
       * SIM card's MCC/MNC.
       *
       * @see KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
       * @see KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
       * @see KEY_NON_ROAMING_OPERATOR_STRING_ARRAY
       * @see KEY_ROAMING_OPERATOR_STRING_ARRAY
       * @see KEY_FORCE_HOME_NETWORK_BOOL
       *
       * @hide
       */
      public static final String KEY_SPN_DISPLAY_RULE_USE_ROAMING_FROM_SERVICE_STATE_BOOL =
              "spn_display_rule_use_roaming_from_service_state_bool";
  
      /**
       * Determines whether any carrier has been identified and its specific config has been applied,
       * default to false.
       * @hide
       */
      public static final String KEY_CARRIER_CONFIG_APPLIED_BOOL = "carrier_config_applied_bool";
  
      /**
       * Determines whether we should show a warning asking the user to check with their carrier
       * on pricing when the user enabled data roaming.
       * default to false.
       * @hide
       */
      public static final String KEY_CHECK_PRICING_WITH_CARRIER_FOR_DATA_ROAMING_BOOL =
              "check_pricing_with_carrier_data_roaming_bool";
  
       /**
        * Determines whether we should show a notification when the phone established a data
        * connection in roaming network, to warn users about possible roaming charges.
        * @hide
        */
      public static final String KEY_SHOW_DATA_CONNECTED_ROAMING_NOTIFICATION_BOOL =
              "show_data_connected_roaming_notification";
  
      /**
       * A list of 4 LTE RSRP thresholds above which a signal level is considered POOR,
       * MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
       *
       * Note that the min and max thresholds are fixed at -140 and -44, as explained in
       * TS 136.133 9.1.4 - RSRP Measurement Report Mapping.
       * <p>
       * See SignalStrength#MAX_LTE_RSRP and SignalStrength#MIN_LTE_RSRP. Any signal level outside
       * these boundaries is considered invalid.
       * @hide
       */
      public static final String KEY_LTE_RSRP_THRESHOLDS_INT_ARRAY =
              "lte_rsrp_thresholds_int_array";
  
      /**
       * Decides when clients try to bind to iwlan network service, which package name will
       * the binding intent go to.
       * @hide
       */
      public static final String KEY_CARRIER_NETWORK_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING =
              "carrier_network_service_wlan_package_override_string";
  
      /**
       * Decides when clients try to bind to wwan (cellular) network service, which package name will
       * the binding intent go to.
       * @hide
       */
      public static final String KEY_CARRIER_NETWORK_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING =
              "carrier_network_service_wwan_package_override_string";
  
      /**
       * The package name of qualified networks service that telephony binds to.
       *
       * @hide
       */
      public static final String KEY_CARRIER_QUALIFIED_NETWORKS_SERVICE_PACKAGE_OVERRIDE_STRING =
              "carrier_qualified_networks_service_package_override_string";
      /**
       * A list of 4 LTE RSCP thresholds above which a signal level is considered POOR,
       * MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
       *
       * Note that the min and max thresholds are fixed at -120 and -24, as set in 3GPP TS 27.007
       * section 8.69.
       * <p>
       * See SignalStrength#MAX_WCDMA_RSCP and SignalStrength#MIN_WDCMA_RSCP. Any signal level outside
       * these boundaries is considered invalid.
       * @hide
       */
      public static final String KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY =
              "wcdma_rscp_thresholds_int_array";
  
      /**
       * The default measurement to use for signal strength reporting. If this is not specified, the
       * RSSI is used.
       * <p>
       * e.g.) To use RSCP by default, set the value to "rscp". The signal strength level will
       * then be determined by #KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY
       * <p>
       * Currently this supports the value "rscp" and "rssi".
       * @hide
       */
      // FIXME: this key and related keys must not be exposed without a consistent philosophy for
      // all RATs.
      public static final String KEY_WCDMA_DEFAULT_SIGNAL_STRENGTH_MEASUREMENT_STRING =
              "wcdma_default_signal_strength_measurement_string";
  
      /**
       * When a partial sms / mms message stay in raw table for too long without being completed,
       * we expire them and delete them from the raw table. This carrier config defines the
       * expiration time.
       * @hide
       */
      public static final String KEY_UNDELIVERED_SMS_MESSAGE_EXPIRATION_TIME =
              "undelivered_sms_message_expiration_time";
  
      /**
       * Specifies a carrier-defined {@link android.telecom.CallRedirectionService} which Telecom
       * will bind to for outgoing calls.  An empty string indicates that no carrier-defined
       * {@link android.telecom.CallRedirectionService} is specified.
       * @hide
       */
      public static final String KEY_CALL_REDIRECTION_SERVICE_COMPONENT_NAME_STRING =
              "call_redirection_service_component_name_string";
      /**
       * Support for the original string display of CDMA MO call.
       * By default, it is disabled.
       * @hide
       */
      public static final String KEY_CONFIG_SHOW_ORIG_DIAL_STRING_FOR_CDMA_BOOL =
              "config_show_orig_dial_string_for_cdma";
  
      /**
       * Flag specifying whether to show notification(call blocking disabled) when Enhanced Call
       * Blocking(KEY_SUPPORT_ENHANCED_CALL_BLOCKING_BOOL) is enabled and making emergency call.
       * When true, notification is shown always.
       * When false, notification is shown only when any setting of "Enhanced Blocked number" is
       * enabled.
       */
      public static final String KEY_SHOW_CALL_BLOCKING_DISABLED_NOTIFICATION_ALWAYS_BOOL =
              "show_call_blocking_disabled_notification_always_bool";
  
      /**
       * Some carriers only support SS over UT via INTERNET PDN.
       * When mobile data is OFF or data roaming OFF during roaming,
       * UI should block the call forwarding operation and notify the user
       * that the function only works if data is available.
       * @hide
       */
      public static final String KEY_CALL_FORWARDING_OVER_UT_WARNING_BOOL =
              "call_forwarding_over_ut_warning_bool";
  
      /**
       * Some carriers only support SS over UT via INTERNET PDN.
       * When mobile data is OFF or data roaming OFF during roaming,
       * UI should block the call barring operation and notify the user
       * that the function only works if data is available.
       * @hide
       */
      public static final String KEY_CALL_BARRING_OVER_UT_WARNING_BOOL =
              "call_barring_over_ut_warning_bool";
  
      /**
       * Some carriers only support SS over UT via INTERNET PDN.
       * When mobile data is OFF or data roaming OFF during roaming,
       * UI should block the caller id operation and notify the user
       * that the function only works if data is available.
       * @hide
       */
      public static final String KEY_CALLER_ID_OVER_UT_WARNING_BOOL =
              "caller_id_over_ut_warning_bool";
  
      /**
       * Some carriers only support SS over UT via INTERNET PDN.
       * When mobile data is OFF or data roaming OFF during roaming,
       * UI should block the call waiting operation and notify the user
       * that the function only works if data is available.
       * @hide
       */
      public static final String KEY_CALL_WAITING_OVER_UT_WARNING_BOOL =
              "call_waiting_over_ut_warning_bool";
  
      /**
       * Flag indicating whether to support "Network default" option in Caller ID settings for Calling
       * Line Identification Restriction (CLIR).
       */
      public static final String KEY_SUPPORT_CLIR_NETWORK_DEFAULT_BOOL =
              "support_clir_network_default_bool";
  
      /**
       * Determines whether the carrier want to support emergency dialer shortcut.
       * @hide
       */
      public static final String KEY_SUPPORT_EMERGENCY_DIALER_SHORTCUT_BOOL =
              "support_emergency_dialer_shortcut_bool";
  
      /**
       * Call forwarding uses USSD command without SS command.
       * When {@code true}, the call forwarding query/set by ussd command and UI only display Call
       * Forwarding when unanswered.
       * When {@code false}, don't use USSD to query/set call forwarding.
       * @hide
       */
      public static final String KEY_USE_CALL_FORWARDING_USSD_BOOL = "use_call_forwarding_ussd_bool";
  
      /**
       * This flag specifies whether to support for the caller id set command by ussd.
       * When {@code true}, device shall sync caller id ussd result to ss command.
       * When {@code false}, caller id don't support ussd command.
       * @hide
       */
      public static final String KEY_USE_CALLER_ID_USSD_BOOL = "use_caller_id_ussd_bool";
  
      /**
       * Specifies the service class for call waiting service.
       * Default value is
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_VOICE}.
       * <p>
       * See 27.007 +CCFC or +CLCK.
       * The value set as below:
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_NONE}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_VOICE}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_DATA}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_FAX}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_SMS}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_DATA_SYNC}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_DATA_ASYNC}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_PACKET}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_PAD}
       * {@link com.android.internal.telephony.CommandsInterface#SERVICE_CLASS_MAX}
       * @hide
       */
      public static final String KEY_CALL_WAITING_SERVICE_CLASS_INT =
              "call_waiting_service_class_int";
  
      /**
       * This configuration allow the system UI to display different 5G icon for different 5G
       * scenario.
       *
       * There are five 5G scenarios:
       * 1. connected_mmwave: device currently connected to 5G cell as the secondary cell and using
       *    millimeter wave.
       * 2. connected: device currently connected to 5G cell as the secondary cell but not using
       *    millimeter wave.
       * 3. not_restricted_rrc_idle: device camped on a network that has 5G capability(not necessary
       *    to connect a 5G cell as a secondary cell) and the use of 5G is not restricted and RRC
       *    currently in IDLE state.
       * 4. not_restricted_rrc_con: device camped on a network that has 5G capability(not necessary
       *    to connect a 5G cell as a secondary cell) and the use of 5G is not restricted and RRC
       *    currently in CONNECTED state.
       * 5. restricted: device camped on a network that has 5G capability(not necessary to connect a
       *    5G cell as a secondary cell) but the use of 5G is restricted.
       *
       * The configured string contains multiple key-value pairs separated by comma. For each pair,
       * the key and value is separated by a colon. The key is corresponded to a 5G status above and
       * the value is the icon name. Use "None" as the icon name if no icon should be shown in a
       * specific 5G scenario. If the scenario is "None", config can skip this key and value.
       *
       * Icon name options: "5G_Plus", "5G".
       *
       * Here is an example:
       * UE want to display 5G_Plus icon for scenario#1, and 5G icon for scenario#2; otherwise no
       * define.
       * The configuration is: "connected_mmwave:5G_Plus,connected:5G"
       *
       * @hide
       */
      public static final String KEY_5G_ICON_CONFIGURATION_STRING =
              "5g_icon_configuration_string";
  
      /**
       * Timeout in second for displaying 5G icon, default value is 0 which means the timer is
       * disabled.
       *
       * System UI will show the 5G icon and start a timer with the timeout from this config when the
       * device connects to a 5G cell. System UI stops displaying 5G icon when both the device
       * disconnects from 5G cell and the timer is expired.
       *
       * If 5G is reacquired during this timer, the timer is canceled and restarted when 5G is next
       * lost. Allows us to momentarily lose 5G without blinking the icon.
       *
       * @hide
       */
      public static final String KEY_5G_ICON_DISPLAY_GRACE_PERIOD_SEC_INT =
              "5g_icon_display_grace_period_sec_int";
  
      /**
       * Controls time in milliseconds until DcTracker reevaluates 5G connection state.
       * @hide
       */
      public static final String KEY_5G_WATCHDOG_TIME_MS_LONG = "5g_watchdog_time_long";
  
      /**
       * Whether NR (non-standalone) should be unmetered for all frequencies.
       * If either {@link #KEY_UNMETERED_NR_NSA_MMWAVE_BOOL} or
       * {@link #KEY_UNMETERED_NR_NSA_SUB6_BOOL} are true, then this value will be ignored.
       * @hide
       */
      public static final String KEY_UNMETERED_NR_NSA_BOOL = "unmetered_nr_nsa_bool";
  
      /**
       * Whether NR (non-standalone) frequencies above 6GHz (millimeter wave) should be unmetered.
       * If this is true, then the value for {@link #KEY_UNMETERED_NR_NSA_BOOL} will be ignored.
       * @hide
       */
      public static final String KEY_UNMETERED_NR_NSA_MMWAVE_BOOL = "unmetered_nr_nsa_mmwave_bool";
  
      /**
       * Whether NR (non-standalone) frequencies below 6GHz (sub6) should be unmetered.
       * If this is true, then the value for {@link #KEY_UNMETERED_NR_NSA_BOOL} will be ignored.
       * @hide
       */
      public static final String KEY_UNMETERED_NR_NSA_SUB6_BOOL = "unmetered_nr_nsa_sub6_bool";
  
      /**
       * Support ASCII 7-BIT encoding for long SMS. This carrier config is used to enable
       * this feature.
       * @hide
       */
      public static final String KEY_ASCII_7_BIT_SUPPORT_FOR_LONG_MESSAGE_BOOL =
              "ascii_7_bit_support_for_long_message_bool";
  
      /**
       * Controls RSRP threshold at which OpportunisticNetworkService will decide whether
       * the opportunistic network is good enough for internet data.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSRP_INT =
              "opportunistic_network_entry_threshold_rsrp_int";
  
      /**
       * Controls RSSNR threshold at which OpportunisticNetworkService will decide whether
       * the opportunistic network is good enough for internet data.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSSNR_INT =
              "opportunistic_network_entry_threshold_rssnr_int";
  
      /**
       * Controls RSRP threshold below which OpportunisticNetworkService will decide whether
       * the opportunistic network available is not good enough for internet data.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSRP_INT =
              "opportunistic_network_exit_threshold_rsrp_int";
  
      /**
       * Controls RSSNR threshold below which OpportunisticNetworkService will decide whether
       * the opportunistic network available is not good enough for internet data.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSSNR_INT =
              "opportunistic_network_exit_threshold_rssnr_int";
  
      /**
       * Controls bandwidth threshold in Kbps at which OpportunisticNetworkService will decide whether
       * the opportunistic network is good enough for internet data.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_BANDWIDTH_INT =
              "opportunistic_network_entry_threshold_bandwidth_int";
  
      /**
       * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
       * will wait before attaching to a network.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_ENTRY_OR_EXIT_HYSTERESIS_TIME_LONG =
              "opportunistic_network_entry_or_exit_hysteresis_time_long";
  
      /**
       * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
       * will wait before switching data to an opportunistic network.
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG =
              "opportunistic_network_data_switch_hysteresis_time_long";
  
      /**
       * Controls hysteresis time in milli seconds for which OpportunisticNetworkService
       * will wait before switching data from opportunistic network to primary network.
       * @hide
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_EXIT_HYSTERESIS_TIME_LONG =
              "opportunistic_network_data_switch_exit_hysteresis_time_long";
  
      /**
       * Controls whether to do ping test before switching data to opportunistic network.
       * This carrier config is used to disable this feature.
       * @hide
       */
      public static final String KEY_PING_TEST_BEFORE_DATA_SWITCH_BOOL =
              "ping_test_before_data_switch_bool";
  
      /**
       * Controls whether to switch data to primary from opportunistic subscription
       * if primary is out of service. This control only affects system or 1st party app
       * initiated data switch, but will not override data switch initiated by privileged carrier apps
       * This carrier config is used to disable this feature.
       * @hide
       */
      public static final String KEY_SWITCH_DATA_TO_PRIMARY_IF_PRIMARY_IS_OOS_BOOL =
              "switch_data_to_primary_if_primary_is_oos_bool";
  
      /**
       * Controls the ping pong determination of opportunistic network.
       * If opportunistic network is determined as out of service or below
       * #KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSRP_INT or
       * #KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSSNR_INT within
       * #KEY_OPPORTUNISTIC_NETWORK_PING_PONG_TIME_LONG of switching to opportunistic network,
       * it will be determined as ping pong situation by system app or 1st party app.
       * @hide
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_PING_PONG_TIME_LONG =
              "opportunistic_network_ping_pong_time_long";
      /**
       * Controls back off time in milli seconds for switching back to
       * opportunistic subscription. This time will be added to
       * {@link CarrierConfigManager#KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG} to
       * determine hysteresis time if there is ping pong situation
       * (determined by system app or 1st party app) between primary and opportunistic
       * subscription. Ping ping situation is defined in
       * #KEY_OPPORTUNISTIC_NETWORK_PING_PONG_TIME_LONG.
       * If ping pong situation continuous #KEY_OPPORTUNISTIC_NETWORK_BACKOFF_TIME_LONG
       * will be added to previously determined hysteresis time.
       * @hide
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_BACKOFF_TIME_LONG =
              "opportunistic_network_backoff_time_long";
  
      /**
       * Controls the max back off time in milli seconds for switching back to
       * opportunistic subscription.
       * This time will be the max hysteresis that can be determined irrespective of there is
       * continuous ping pong situation or not as described in
       * #KEY_OPPORTUNISTIC_NETWORK_PING_PONG_TIME_LONG and
       * #KEY_OPPORTUNISTIC_NETWORK_BACKOFF_TIME_LONG.
       * @hide
       */
      public static final String KEY_OPPORTUNISTIC_NETWORK_MAX_BACKOFF_TIME_LONG =
              "opportunistic_network_max_backoff_time_long";
  
      /**
       * Indicates zero or more emergency number prefix(es), because some carrier requires
       * if users dial an emergency number address with a specific prefix, the combination of the
       * prefix and the address is also a valid emergency number to dial. For example, an emergency
       * number prefix is 318, and the emergency number is 911. Both 318911 and 911 can be dialed by
       * users for emergency call. An empty array of string indicates that current carrier does not
       * have this requirement.
       */
      public static final String KEY_EMERGENCY_NUMBER_PREFIX_STRING_ARRAY =
              "emergency_number_prefix_string_array";
  
      /**
       * Smart forwarding config. Smart forwarding is a feature to configure call forwarding to a
       * different SIM in the device when one SIM is not reachable. The config here specifies a smart
       * forwarding component that will launch UI for changing the configuration. An empty string
       * indicates that no smart forwarding component is specified.
       *
       * Currently, only one non-empty configuration of smart forwarding component within system will
       * be used when multiple SIMs are inserted.
       *
       * Empty string by default.
       *
       * @hide
       */
      public static final String KEY_SMART_FORWARDING_CONFIG_COMPONENT_NAME_STRING =
              "smart_forwarding_config_component_name_string";
  
      /**
       * Indicates when a carrier has a primary subscription and an opportunistic subscription active,
       * and when Internet data is switched to opportunistic network, whether to still show
       * signal bar of primary network. By default it will be false, meaning whenever data
       * is going over opportunistic network, signal bar will reflect signal strength and rat
       * icon of that network.
       *
       * @hide
       */
      public static final String KEY_ALWAYS_SHOW_PRIMARY_SIGNAL_BAR_IN_OPPORTUNISTIC_NETWORK_BOOLEAN =
              "always_show_primary_signal_bar_in_opportunistic_network_boolean";
  
      /**
       * Upon data switching between subscriptions within a carrier group, if switch depends on
       * validation result, this value defines customized value of how long we wait for validation
       * success before we fail and revoke the switch.
       * Time out is in milliseconds.
       * @hide
       */
      public static final String KEY_DATA_SWITCH_VALIDATION_TIMEOUT_LONG =
              "data_switch_validation_timeout_long";
  
      /**
       * GPS configs. See android.hardware.gnss@1.0 IGnssConfiguration.
       * @hide
       */
      public static final class Gps {
          /** Prefix of all Gps.KEY_* constants. */
          public static final String KEY_PREFIX = "gps.";
  
          /**
           * Location information during (and after) an emergency call is only provided over control
           * plane signaling from the network.
           */
          public static final int SUPL_EMERGENCY_MODE_TYPE_CP_ONLY = 0;
  
          /**
           * Location information during (and after) an emergency call is provided over the data
           * plane and serviced by the framework GNSS service, but if it fails, the carrier also
           * supports control plane backup signaling.
           */
          public static final int SUPL_EMERGENCY_MODE_TYPE_CP_FALLBACK = 1;
  
          /**
           * Location information during (and after) an emergency call is provided over the data plane
           * and serviced by the framework GNSS service only. There is no backup signalling over the
           * control plane if it fails.
           */
          public static final int SUPL_EMERGENCY_MODE_TYPE_DP_ONLY = 2;
  
  
          /**
           * Determine whether current lpp_mode used for E-911 needs to be kept persistently.
           * {@code false} - not keeping the lpp_mode means using default configuration of gps.conf
           *                 when sim is not presented.
           * {@code true}  - current lpp_profile of carrier will be kepted persistently
           *                 even after sim is removed. This is default.
           */
          public static final String KEY_PERSIST_LPP_MODE_BOOL = KEY_PREFIX + "persist_lpp_mode_bool";
  
          /**
           * SUPL server host for SET Initiated & non-ES Network-Initiated SUPL requests.
           * Default to supl.google.com
           */
          public static final String KEY_SUPL_HOST_STRING = KEY_PREFIX + "supl_host";
  
          /** SUPL server port. Default to 7275. */
          public static final String KEY_SUPL_PORT_STRING = KEY_PREFIX + "supl_port";
  
          /**
           * The SUPL version requested by Carrier. This is a bit mask
           * with bits 0:7 representing a service indicator field, bits 8:15
           * representing the minor version and bits 16:23 representing the
           * major version. Default to 0x20000.
           */
          public static final String KEY_SUPL_VER_STRING = KEY_PREFIX + "supl_ver";
  
          /**
           * SUPL_MODE configuration bit mask
           * 1 - Mobile Station Based. This is default.
           * 2 - Mobile Station Assisted.
           */
          public static final String KEY_SUPL_MODE_STRING = KEY_PREFIX + "supl_mode";
  
          /**
           * Whether to limit responses to SUPL ES mode requests only during user emergency sessions
           * (e.g. E911), and SUPL non-ES requests to only outside of non user emergency sessions.
           * 0 - no.
           * 1 - yes. This is default.
           */
          // TODO(b/119567985): name this key properly
          public static final String KEY_SUPL_ES_STRING = KEY_PREFIX + "supl_es";
  
          /**
           * LTE Positioning Profile settings bit mask.
           * 0 - Radio Resource Location Protocol in user plane and control plane. This is default.
           * 1 - Enable LTE Positioning Protocol in user plane.
           * 2 - Enable LTE Positioning Protocol in control plane.
           */
          public static final String KEY_LPP_PROFILE_STRING = KEY_PREFIX + "lpp_profile";
  
          /**
           * Determine whether to use emergency PDN for emergency SUPL.
           * 0 - no.
           * 1 - yes. This is default.
           */
          public static final String KEY_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_STRING =
                  KEY_PREFIX + "use_emergency_pdn_for_emergency_supl";
  
          /**
           * A_GLONASS_POS_PROTOCOL_SELECT bit mask.
           * 0 - Don't use A-GLONASS. This is default.
           * 1 - Use A-GLONASS in Radio Resource Control(RRC) control-plane.
           * 2 - Use A-GLONASS in Radio Resource Location user-plane.
           * 4 - Use A-GLONASS in LTE Positioning Protocol User plane.
           */
          public static final String KEY_A_GLONASS_POS_PROTOCOL_SELECT_STRING =
                  KEY_PREFIX + "a_glonass_pos_protocol_select";
  
          /**
           * GPS_LOCK configuration bit mask to specify GPS device behavior toward other services,
           * when Location Settings are off.
           * "0" - No lock.
           * "1" - Lock Mobile Originated GPS functionalities.
           * "2" - Lock Network initiated GPS functionalities.
           * "3" - Lock both. This is default.
           */
          public static final String KEY_GPS_LOCK_STRING = KEY_PREFIX + "gps_lock";
  
          /**
           * Control Plane / SUPL NI emergency extension time in seconds. Default to "0".
           */
          public static final String KEY_ES_EXTENSION_SEC_STRING = KEY_PREFIX + "es_extension_sec";
  
          /**
           * Space separated list of Android package names of proxy applications representing
           * the non-framework entities requesting location directly from GNSS without involving
           * the framework, as managed by IGnssVisibilityControl.hal. For example,
           * "com.example.mdt com.example.ims".
           */
          public static final String KEY_NFW_PROXY_APPS_STRING = KEY_PREFIX + "nfw_proxy_apps";
  
          /**
           * Determines whether or not SUPL ES mode supports a control-plane mechanism to get a user's
           * location in the event that data plane SUPL fails or is otherwise unavailable.
           * <p>
           * An integer value determines the support type of this carrier. If this carrier only
           * supports data plane SUPL ES, then the value will be
           * {@link #SUPL_EMERGENCY_MODE_TYPE_DP_ONLY}. If the carrier supports control plane fallback
           * for emergency SUPL, the value will be {@link #SUPL_EMERGENCY_MODE_TYPE_CP_FALLBACK}.
           * If the carrier does not support data plane SUPL using the framework, the value will be
           * {@link #SUPL_EMERGENCY_MODE_TYPE_CP_ONLY}.
           * <p>
           * The default value for this configuration is {@link #SUPL_EMERGENCY_MODE_TYPE_CP_ONLY}.
           */
          public static final String KEY_ES_SUPL_CONTROL_PLANE_SUPPORT_INT = KEY_PREFIX
                  + "es_supl_control_plane_support_int";
  
          /**
           * A list of roaming PLMNs where SUPL ES mode does not support a control-plane mechanism to
           * get a user's location in the event that data plane SUPL fails or is otherwise
           * unavailable.
           * <p>
           * A string array of PLMNs that do not support a control-plane mechanism for getting a
           * user's location for SUPL ES.
           */
          public static final String KEY_ES_SUPL_DATA_PLANE_ONLY_ROAMING_PLMN_STRING_ARRAY =
                  KEY_PREFIX + "es_supl_data_plane_only_roaming_plmn_string_array";
  
          private static PersistableBundle getDefaults() {
              PersistableBundle defaults = new PersistableBundle();
              defaults.putBoolean(KEY_PERSIST_LPP_MODE_BOOL, true);
              defaults.putString(KEY_SUPL_HOST_STRING, "supl.google.com");
              defaults.putString(KEY_SUPL_PORT_STRING, "7275");
              defaults.putString(KEY_SUPL_VER_STRING, "0x20000");
              defaults.putString(KEY_SUPL_MODE_STRING, "1");
              defaults.putString(KEY_SUPL_ES_STRING, "1");
              defaults.putString(KEY_LPP_PROFILE_STRING, "0");
              defaults.putString(KEY_USE_EMERGENCY_PDN_FOR_EMERGENCY_SUPL_STRING, "1");
              defaults.putString(KEY_A_GLONASS_POS_PROTOCOL_SELECT_STRING, "0");
              defaults.putString(KEY_GPS_LOCK_STRING, "3");
              defaults.putString(KEY_ES_EXTENSION_SEC_STRING, "0");
              defaults.putString(KEY_NFW_PROXY_APPS_STRING, "");
              defaults.putInt(KEY_ES_SUPL_CONTROL_PLANE_SUPPORT_INT,
                      SUPL_EMERGENCY_MODE_TYPE_CP_ONLY);
              defaults.putStringArray(KEY_ES_SUPL_DATA_PLANE_ONLY_ROAMING_PLMN_STRING_ARRAY, null);
              return defaults;
          }
      }
  
      /**
       * Wi-Fi configs used in Carrier Wi-Fi application.
       * TODO(b/132059890): Expose it in a future release as systemapi.
       *
       * @hide
       */
      public static final class Wifi {
          /** Prefix of all Wifi.KEY_* constants. */
          public static final String KEY_PREFIX = "wifi.";
  
          /**
           * Whenever any information under wifi namespace is changed, the version should be
           * incremented by 1 so that the device is able to figure out the latest profiles based on
           * the version.
           */
          public static final String KEY_CARRIER_PROFILES_VERSION_INT =
                  KEY_PREFIX + "carrier_profiles_version_int";
  
          /**
           * It contains the package name of connection manager that the carrier owns.
           *
           * <P>Once it is installed, the profiles installed by Carrier Wi-Fi Application
           * will be deleted.
           * Once it is uninstalled, Carrier Wi-Fi Application will re-install the latest profiles.
           */
          public static final String KEY_CARRIER_CONNECTION_MANAGER_PACKAGE_STRING =
                  KEY_PREFIX + "carrier_connection_manager_package_string";
          /**
           * It is to have the list of wifi networks profiles which contain the information about
           * the wifi-networks to which carrier wants the device to connect.
           */
          public static final String KEY_NETWORK_PROFILES_STRING_ARRAY =
                  KEY_PREFIX + "network_profiles_string_array";
  
          /**
           * It is to have the list of Passpoint profiles which contain the information about
           * the Passpoint networks to which carrier wants the device to connect.
           */
          public static final String KEY_PASSPOINT_PROFILES_STRING_ARRAY =
                  KEY_PREFIX + "passpoint_profiles_string_array";
  
          private static PersistableBundle getDefaults() {
              PersistableBundle defaults = new PersistableBundle();
              defaults.putInt(KEY_CARRIER_PROFILES_VERSION_INT, -1);
              defaults.putString(KEY_CARRIER_CONNECTION_MANAGER_PACKAGE_STRING, null);
              defaults.putStringArray(KEY_NETWORK_PROFILES_STRING_ARRAY, null);
              defaults.putStringArray(KEY_PASSPOINT_PROFILES_STRING_ARRAY, null);
              return defaults;
          }
  
          private Wifi() {}
      }
  
     /**
      * An int array containing CDMA enhanced roaming indicator values for Home (non-roaming) network.
      * The default values come from 3GPP2 C.R1001 table 8.1-1.
      * Enhanced Roaming Indicator Number Assignments
      *
      * @hide
      */
      public static final String KEY_CDMA_ENHANCED_ROAMING_INDICATOR_FOR_HOME_NETWORK_INT_ARRAY =
              "cdma_enhanced_roaming_indicator_for_home_network_int_array";
  
      /**
       * Determines whether wifi calling location privacy policy is shown.
       *
       * @hide
       */
      public static final String KEY_SHOW_WFC_LOCATION_PRIVACY_POLICY_BOOL =
              "show_wfc_location_privacy_policy_bool";
  
      /**
       * Indicates use 3GPP application to replace 3GPP2 application even if it's a CDMA/CDMA-LTE
       * phone, becasue some carriers's CSIM application is present but not supported.
       * @hide
       */
      public static final String KEY_USE_USIM_BOOL = "use_usim_bool";
  
      /**
       * Determines whether the carrier wants to cancel the cs reject notification automatically
       * when the voice registration state changes.
       * If true, the notification will be automatically removed
       *          when the voice registration state changes.
       * If false, the notification will persist until the user dismisses it,
       *           the SIM is removed, or the device is rebooted.
       * @hide
       */
      public static final String KEY_AUTO_CANCEL_CS_REJECT_NOTIFICATION =
              "carrier_auto_cancel_cs_notification";
  
      /**
       * Passing this value as {@link KEY_SUBSCRIPTION_GROUP_UUID_STRING} will remove the
       * subscription from a group instead of adding it to a group.
       *
       * TODO: Expose in a future release.
       *
       * @hide
       */
      public static final String REMOVE_GROUP_UUID_STRING = "00000000-0000-0000-0000-000000000000";
  
      /**
       * The UUID of a Group of related subscriptions in which to place the current subscription.
       *
       * A grouped subscription will behave for billing purposes and other UI purposes as though it
       * is a transparent extension of other subscriptions in the group.
       *
       * <p>If set to {@link #REMOVE_GROUP_UUID_STRING}, then the subscription will be removed from
       * its current group.
       *
       * TODO: unhide this key.
       *
       * @hide
       */
      public static final String KEY_SUBSCRIPTION_GROUP_UUID_STRING =
              "subscription_group_uuid_string";
  
      /**
       * Data switch validation minimal gap time, in milliseconds.
       *
       * Which means, if the same subscription on the same network (based on MCC+MNC+TAC+subId)
       * was recently validated (within this time gap), and Telephony receives a request to switch to
       * it again, Telephony will skip the validation part and switch to it as soon as connection
       * is setup, as if it's already validated.
       *
       * If the network was validated within the gap but the latest validation result is false, the
       * validation will not be skipped.
       *
       * If not set or set to 0, validation will never be skipped.
       * The max acceptable value of this config is 24 hours.
       *
       * @hide
       */
      public static final String KEY_DATA_SWITCH_VALIDATION_MIN_GAP_LONG =
              "data_switch_validation_min_gap_long";
  
      /**
      * A boolean property indicating whether this subscription should be managed as an opportunistic
      * subscription.
      *
      * If true, then this subscription will be selected based on available coverage and will not be
      * available for a user in settings menus for selecting macro network providers. If unset,
      * defaults to “false”.
      *
      * TODO: unhide this key.
      *
      * @hide
      */
      public static final String KEY_IS_OPPORTUNISTIC_SUBSCRIPTION_BOOL =
              "is_opportunistic_subscription_bool";
  
      /**
       * A list of 4 GSM RSSI thresholds above which a signal level is considered POOR,
       * MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
       *
       * Note that the min and max thresholds are fixed at -113 and -51, as set in 3GPP TS 27.007
       * section 8.5.
       * <p>
       * See CellSignalStrengthGsm#GSM_RSSI_MAX and CellSignalStrengthGsm#GSM_RSSI_MIN. Any signal
       * level outside these boundaries is considered invalid.
       * @hide
       */
      public static final String KEY_GSM_RSSI_THRESHOLDS_INT_ARRAY =
              "gsm_rssi_thresholds_int_array";
  
      /**
       * Determines whether Wireless Priority Service call is supported over IMS.
       *
       * See Wireless Priority Service from https://www.fcc.gov/general/wireless-priority-service-wps
       * @hide
       */
      public static final String KEY_SUPPORT_WPS_OVER_IMS_BOOL =
              "support_wps_over_ims_bool";
  
      /**
       * Holds the list of carrier certificate hashes. Note that each carrier has its own certificates
       * @hide
       */
      public static final String KEY_CARRIER_CERTIFICATE_STRING_ARRAY =
              "carrier_certificate_string_array";
  
      /** The default value for every variable. */
      private final static PersistableBundle sDefaults;
  
      static {
          sDefaults = new PersistableBundle();
          sDefaults.putString(KEY_CARRIER_CONFIG_VERSION_STRING, "");
          sDefaults.putBoolean(KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL, true);
          sDefaults.putBoolean(KEY_CARRIER_ALLOW_DEFLECT_IMS_CALL_BOOL, false);
          sDefaults.putBoolean(KEY_ALWAYS_PLAY_REMOTE_HOLD_TONE_BOOL, false);
          sDefaults.putBoolean(KEY_AUTO_RETRY_FAILED_WIFI_EMERGENCY_CALL, false);
          sDefaults.putBoolean(KEY_ADDITIONAL_CALL_SETTING_BOOL, true);
          sDefaults.putBoolean(KEY_ALLOW_EMERGENCY_NUMBERS_IN_CALL_LOG_BOOL, false);
          sDefaults.putStringArray(KEY_UNLOGGABLE_NUMBERS_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_ALLOW_LOCAL_DTMF_TONES_BOOL, true);
          sDefaults.putBoolean(KEY_PLAY_CALL_RECORDING_TONE_BOOL, false);
          sDefaults.putBoolean(KEY_APN_EXPAND_BOOL, true);
          sDefaults.putBoolean(KEY_AUTO_RETRY_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_SETTINGS_ENABLE_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_VOLTE_AVAILABLE_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_VT_AVAILABLE_BOOL, false);
          sDefaults.putBoolean(KEY_NOTIFY_HANDOVER_VIDEO_FROM_WIFI_TO_LTE_BOOL, false);
          sDefaults.putBoolean(KEY_ALLOW_MERGING_RTT_CALLS_BOOL, false);
          sDefaults.putBoolean(KEY_NOTIFY_HANDOVER_VIDEO_FROM_LTE_TO_WIFI_BOOL, false);
          sDefaults.putBoolean(KEY_SUPPORT_DOWNGRADE_VT_TO_AUDIO_BOOL, true);
          sDefaults.putString(KEY_DEFAULT_VM_NUMBER_STRING, "");
          sDefaults.putString(KEY_DEFAULT_VM_NUMBER_ROAMING_STRING, "");
          sDefaults.putBoolean(KEY_CONFIG_TELEPHONY_USE_OWN_NUMBER_FOR_VOICEMAIL_BOOL, false);
          sDefaults.putBoolean(KEY_IGNORE_DATA_ENABLED_CHANGED_FOR_VIDEO_CALLS, true);
          sDefaults.putBoolean(KEY_VILTE_DATA_IS_METERED_BOOL, true);
          sDefaults.putBoolean(KEY_CARRIER_WFC_IMS_AVAILABLE_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_DEFAULT_WFC_IMS_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_PROMOTE_WFC_ON_CALL_FAIL_BOOL, false);
          sDefaults.putInt(KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT, 2);
          sDefaults.putInt(KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT, 2);
          sDefaults.putBoolean(KEY_CARRIER_FORCE_DISABLE_ETWS_CMAS_TEST_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_UT_PROVISIONING_REQUIRED_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_SUPPORTS_SS_OVER_UT_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_VOLTE_OVERRIDE_WFC_PROVISIONING_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL, true);
          sDefaults.putBoolean(KEY_CARRIER_ALLOW_TURNOFF_IMS_BOOL, true);
          sDefaults.putBoolean(KEY_CARRIER_IMS_GBA_REQUIRED_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL, true);
          sDefaults.putString(KEY_CARRIER_NETWORK_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING, "");
          sDefaults.putString(KEY_CARRIER_NETWORK_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING, "");
          sDefaults.putString(KEY_CARRIER_QUALIFIED_NETWORKS_SERVICE_PACKAGE_OVERRIDE_STRING, "");
          sDefaults.putString(KEY_CARRIER_DATA_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING, "");
          sDefaults.putString(KEY_CARRIER_DATA_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING, "");
          sDefaults.putString(KEY_CARRIER_INSTANT_LETTERING_INVALID_CHARS_STRING, "");
          sDefaults.putString(KEY_CARRIER_INSTANT_LETTERING_ESCAPED_CHARS_STRING, "");
          sDefaults.putString(KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING, "");
          sDefaults.putInt(KEY_CARRIER_INSTANT_LETTERING_LENGTH_LIMIT_INT, 64);
          sDefaults.putBoolean(KEY_DISABLE_CDMA_ACTIVATION_CODE_BOOL, false);
          sDefaults.putBoolean(KEY_DTMF_TYPE_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_ENABLE_DIALER_KEY_VIBRATION_BOOL, true);
          sDefaults.putBoolean(KEY_HAS_IN_CALL_NOISE_SUPPRESSION_BOOL, false);
          sDefaults.putBoolean(KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL, false);
          sDefaults.putBoolean(KEY_ONLY_AUTO_SELECT_IN_HOME_NETWORK_BOOL, false);
          sDefaults.putBoolean(KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL, false);
          sDefaults.putBoolean(KEY_HIDE_SIM_LOCK_SETTINGS_BOOL, false);
  
          sDefaults.putBoolean(KEY_CARRIER_VOLTE_PROVISIONED_BOOL, false);
          sDefaults.putBoolean(KEY_CALL_BARRING_VISIBILITY_BOOL, false);
          sDefaults.putBoolean(KEY_CALL_BARRING_SUPPORTS_PASSWORD_CHANGE_BOOL, true);
          sDefaults.putBoolean(KEY_CALL_BARRING_SUPPORTS_DEACTIVATE_ALL_BOOL, true);
          sDefaults.putBoolean(KEY_CALL_FORWARDING_VISIBILITY_BOOL, true);
          sDefaults.putBoolean(KEY_ADDITIONAL_SETTINGS_CALLER_ID_VISIBILITY_BOOL, true);
          sDefaults.putBoolean(KEY_ADDITIONAL_SETTINGS_CALL_WAITING_VISIBILITY_BOOL, true);
          sDefaults.putBoolean(KEY_DISABLE_SUPPLEMENTARY_SERVICES_IN_AIRPLANE_MODE_BOOL, false);
          sDefaults.putBoolean(KEY_IGNORE_SIM_NETWORK_LOCKED_EVENTS_BOOL, false);
          sDefaults.putBoolean(KEY_MDN_IS_ADDITIONAL_VOICEMAIL_NUMBER_BOOL, false);
          sDefaults.putBoolean(KEY_OPERATOR_SELECTION_EXPAND_BOOL, true);
          sDefaults.putBoolean(KEY_PREFER_2G_BOOL, true);
          sDefaults.putBoolean(KEY_SHOW_APN_SETTING_CDMA_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_CDMA_CHOICES_BOOL, false);
          sDefaults.putBoolean(KEY_SMS_REQUIRES_DESTINATION_NUMBER_CONVERSION_BOOL, false);
          sDefaults.putBoolean(KEY_SUPPORT_EMERGENCY_SMS_OVER_IMS_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_ONSCREEN_DIAL_BUTTON_BOOL, true);
          sDefaults.putBoolean(KEY_SIM_NETWORK_UNLOCK_ALLOW_DISMISS_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL, false);
          sDefaults.putBoolean(KEY_SUPPORT_SWAP_AFTER_MERGE_BOOL, true);
          sDefaults.putBoolean(KEY_USE_HFA_FOR_PROVISIONING_BOOL, false);
          sDefaults.putBoolean(KEY_EDITABLE_VOICEMAIL_NUMBER_SETTING_BOOL, true);
          sDefaults.putBoolean(KEY_EDITABLE_VOICEMAIL_NUMBER_BOOL, false);
          sDefaults.putBoolean(KEY_USE_OTASP_FOR_PROVISIONING_BOOL, false);
          sDefaults.putBoolean(KEY_VOICEMAIL_NOTIFICATION_PERSISTENT_BOOL, false);
          sDefaults.putBoolean(KEY_VOICE_PRIVACY_DISABLE_UI_BOOL, false);
          sDefaults.putBoolean(KEY_WORLD_PHONE_BOOL, false);
          sDefaults.putBoolean(KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL, true);
          sDefaults.putBoolean(KEY_RESTART_RADIO_ON_PDP_FAIL_REGULAR_DEACTIVATION_BOOL, false);
          sDefaults.putIntArray(KEY_RADIO_RESTART_FAILURE_CAUSES_INT_ARRAY, new int[]{});
          sDefaults.putInt(KEY_VOLTE_REPLACEMENT_RAT_INT, 0);
          sDefaults.putString(KEY_DEFAULT_SIM_CALL_MANAGER_STRING, "");
          sDefaults.putString(KEY_VVM_DESTINATION_NUMBER_STRING, "");
          sDefaults.putInt(KEY_VVM_PORT_NUMBER_INT, 0);
          sDefaults.putString(KEY_VVM_TYPE_STRING, "");
          sDefaults.putBoolean(KEY_VVM_CELLULAR_DATA_REQUIRED_BOOL, false);
          sDefaults.putString(KEY_VVM_CLIENT_PREFIX_STRING,"//VVM");
          sDefaults.putBoolean(KEY_VVM_SSL_ENABLED_BOOL,false);
          sDefaults.putStringArray(KEY_VVM_DISABLED_CAPABILITIES_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_VVM_LEGACY_MODE_ENABLED_BOOL,false);
          sDefaults.putBoolean(KEY_VVM_PREFETCH_BOOL, true);
          sDefaults.putString(KEY_CARRIER_VVM_PACKAGE_NAME_STRING, "");
          sDefaults.putStringArray(KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_SHOW_ICCID_IN_SIM_STATUS_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_SIGNAL_STRENGTH_IN_SIM_STATUS_BOOL, true);
          sDefaults.putBoolean(KEY_CI_ACTION_ON_SYS_UPDATE_BOOL, false);
          sDefaults.putString(KEY_CI_ACTION_ON_SYS_UPDATE_INTENT_STRING, "");
          sDefaults.putString(KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_STRING, "");
          sDefaults.putString(KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_VAL_STRING, "");
          sDefaults.putBoolean(KEY_CSP_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_ALLOW_ADDING_APNS_BOOL, true);
          sDefaults.putStringArray(KEY_READ_ONLY_APN_TYPES_STRING_ARRAY, new String[] {"dun"});
          sDefaults.putStringArray(KEY_READ_ONLY_APN_FIELDS_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_APN_SETTINGS_DEFAULT_APN_TYPES_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_BROADCAST_EMERGENCY_CALL_STATE_CHANGES_BOOL, false);
          sDefaults.putBoolean(KEY_ALWAYS_SHOW_EMERGENCY_ALERT_ONOFF_BOOL, false);
          sDefaults.putBoolean(KEY_DISABLE_SEVERE_WHEN_EXTREME_DISABLED_BOOL, true);
          sDefaults.putLong(KEY_MESSAGE_EXPIRATION_TIME_LONG, 86400000L);
          sDefaults.putStringArray(KEY_CARRIER_DATA_CALL_RETRY_CONFIG_STRINGS, new String[]{
                  "default:default_randomization=2000,5000,10000,20000,40000,80000:5000,160000:5000,"
                          + "320000:5000,640000:5000,1280000:5000,1800000:5000",
                  "mms:default_randomization=2000,5000,10000,20000,40000,80000:5000,160000:5000,"
                          + "320000:5000,640000:5000,1280000:5000,1800000:5000",
                  "others:max_retries=3, 5000, 5000, 5000"});
          sDefaults.putLong(KEY_CARRIER_DATA_CALL_APN_DELAY_DEFAULT_LONG, 20000);
          sDefaults.putLong(KEY_CARRIER_DATA_CALL_APN_DELAY_FASTER_LONG, 3000);
          sDefaults.putLong(KEY_CARRIER_DATA_CALL_APN_RETRY_AFTER_DISCONNECT_LONG, 10000);
          sDefaults.putString(KEY_CARRIER_ERI_FILE_NAME_STRING, "eri.xml");
          sDefaults.putInt(KEY_DURATION_BLOCKING_DISABLED_AFTER_EMERGENCY_INT, 7200);
          sDefaults.putStringArray(KEY_CARRIER_METERED_APN_TYPES_STRINGS,
                  new String[]{"default", "mms", "dun", "supl"});
          sDefaults.putStringArray(KEY_CARRIER_METERED_ROAMING_APN_TYPES_STRINGS,
                  new String[]{"default", "mms", "dun", "supl"});
          sDefaults.putStringArray(KEY_CARRIER_WWAN_DISALLOWED_APN_TYPES_STRING_ARRAY,
                  new String[]{""});
          sDefaults.putStringArray(KEY_CARRIER_WLAN_DISALLOWED_APN_TYPES_STRING_ARRAY,
                  new String[]{""});
          sDefaults.putIntArray(KEY_ONLY_SINGLE_DC_ALLOWED_INT_ARRAY,
                  new int[]{
                      4, /* IS95A */
                      5, /* IS95B */
                      6, /* 1xRTT */
                      7, /* EVDO_0 */
                      8, /* EVDO_A */
                      12 /* EVDO_B */
                  });
          sDefaults.putStringArray(KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY, null);
          sDefaults.putString(KEY_CONFIG_IMS_PACKAGE_OVERRIDE_STRING, null);
          sDefaults.putStringArray(KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_DIAL_STRING_REPLACE_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_FORCE_HOME_NETWORK_BOOL, false);
          sDefaults.putInt(KEY_GSM_DTMF_TONE_DELAY_INT, 0);
          sDefaults.putInt(KEY_IMS_DTMF_TONE_DELAY_INT, 0);
          sDefaults.putInt(KEY_CDMA_DTMF_TONE_DELAY_INT, 100);
          sDefaults.putBoolean(KEY_CALL_FORWARDING_MAP_NON_NUMBER_TO_VOICEMAIL_BOOL, false);
          sDefaults.putBoolean(KEY_IGNORE_RTT_MODE_SETTING_BOOL, false);
          sDefaults.putInt(KEY_CDMA_3WAYCALL_FLASH_DELAY_INT , 0);
          sDefaults.putBoolean(KEY_SUPPORT_CONFERENCE_CALL_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_IMS_CONFERENCE_CALL_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_MANAGE_IMS_CONFERENCE_CALL_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_IMS_CONFERENCE_EVENT_PACKAGE_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_VIDEO_CONFERENCE_CALL_BOOL, false);
          sDefaults.putBoolean(KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL, false);
          sDefaults.putInt(KEY_IMS_CONFERENCE_SIZE_LIMIT_INT, 5);
          sDefaults.putBoolean(KEY_DISPLAY_HD_AUDIO_PROPERTY_BOOL, true);
          sDefaults.putBoolean(KEY_EDITABLE_ENHANCED_4G_LTE_BOOL, true);
          sDefaults.putBoolean(KEY_HIDE_ENHANCED_4G_LTE_BOOL, false);
          sDefaults.putBoolean(KEY_ENHANCED_4G_LTE_ON_BY_DEFAULT_BOOL, true);
          sDefaults.putBoolean(KEY_HIDE_IMS_APN_BOOL, false);
          sDefaults.putBoolean(KEY_HIDE_PREFERRED_NETWORK_TYPE_BOOL, false);
          sDefaults.putBoolean(KEY_ALLOW_EMERGENCY_VIDEO_CALLS_BOOL, false);
          sDefaults.putStringArray(KEY_ENABLE_APPS_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_EDITABLE_WFC_MODE_BOOL, true);
          sDefaults.putStringArray(KEY_WFC_OPERATOR_ERROR_CODES_STRING_ARRAY, null);
          sDefaults.putInt(KEY_WFC_SPN_FORMAT_IDX_INT, 0);
          sDefaults.putInt(KEY_WFC_DATA_SPN_FORMAT_IDX_INT, 0);
          sDefaults.putInt(KEY_WFC_FLIGHT_MODE_SPN_FORMAT_IDX_INT, -1);
          sDefaults.putBoolean(KEY_WFC_SPN_USE_ROOT_LOCALE, false);
          sDefaults.putString(KEY_WFC_EMERGENCY_ADDRESS_CARRIER_APP_STRING, "");
          sDefaults.putBoolean(KEY_CONFIG_WIFI_DISABLE_IN_ECBM, false);
          sDefaults.putBoolean(KEY_CARRIER_NAME_OVERRIDE_BOOL, false);
          sDefaults.putString(KEY_CARRIER_NAME_STRING, "");
          sDefaults.putInt(KEY_SPN_DISPLAY_CONDITION_OVERRIDE_INT, -1);
          sDefaults.putStringArray(KEY_SPDI_OVERRIDE_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_PNN_OVERRIDE_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_OPL_OVERRIDE_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_EHPLMN_OVERRIDE_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_ALLOW_ERI_BOOL, false);
          sDefaults.putBoolean(KEY_ENABLE_CARRIER_DISPLAY_NAME_RESOLVER_BOOL, false);
          sDefaults.putString(KEY_SIM_COUNTRY_ISO_OVERRIDE_STRING, "");
          sDefaults.putString(KEY_CARRIER_CALL_SCREENING_APP_STRING, "");
          sDefaults.putString(KEY_CALL_REDIRECTION_SERVICE_COMPONENT_NAME_STRING, null);
          sDefaults.putBoolean(KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL, false);
          sDefaults.putString(KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING, "");
          sDefaults.putBoolean(KEY_SUPPORT_DIRECT_FDN_DIALING_BOOL, false);
          sDefaults.putBoolean(KEY_CARRIER_DEFAULT_DATA_ROAMING_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_SKIP_CF_FAIL_TO_DISABLE_DIALOG_BOOL, false);
          sDefaults.putBoolean(KEY_SUPPORT_ENHANCED_CALL_BLOCKING_BOOL, true);
  
          // MMS defaults
          sDefaults.putBoolean(KEY_MMS_ALIAS_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_ALLOW_ATTACH_AUDIO_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_APPEND_TRANSACTION_ID_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_GROUP_MMS_ENABLED_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_MMS_DELIVERY_REPORT_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_MMS_ENABLED_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_MMS_READ_REPORT_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_MULTIPART_SMS_ENABLED_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_NOTIFY_WAP_MMSC_ENABLED_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_SEND_MULTIPART_SMS_AS_SEPARATE_MESSAGES_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_SHOW_CELL_BROADCAST_APP_LINKS_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_SMS_DELIVERY_REPORT_ENABLED_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_SUPPORT_HTTP_CHARSET_HEADER_BOOL, false);
          sDefaults.putBoolean(KEY_MMS_SUPPORT_MMS_CONTENT_DISPOSITION_BOOL, true);
          sDefaults.putBoolean(KEY_MMS_CLOSE_CONNECTION_BOOL, false);
          sDefaults.putInt(KEY_MMS_ALIAS_MAX_CHARS_INT, 48);
          sDefaults.putInt(KEY_MMS_ALIAS_MIN_CHARS_INT, 2);
          sDefaults.putInt(KEY_MMS_HTTP_SOCKET_TIMEOUT_INT, 60 * 1000);
          sDefaults.putInt(KEY_MMS_MAX_IMAGE_HEIGHT_INT, 480);
          sDefaults.putInt(KEY_MMS_MAX_IMAGE_WIDTH_INT, 640);
          sDefaults.putInt(KEY_MMS_MAX_MESSAGE_SIZE_INT, 300 * 1024);
          sDefaults.putInt(KEY_MMS_MESSAGE_TEXT_MAX_SIZE_INT, -1);
          sDefaults.putInt(KEY_MMS_RECIPIENT_LIMIT_INT, Integer.MAX_VALUE);
          sDefaults.putInt(KEY_MMS_SMS_TO_MMS_TEXT_LENGTH_THRESHOLD_INT, -1);
          sDefaults.putInt(KEY_MMS_SMS_TO_MMS_TEXT_THRESHOLD_INT, -1);
          sDefaults.putInt(KEY_MMS_SUBJECT_MAX_LENGTH_INT, 40);
          sDefaults.putString(KEY_MMS_EMAIL_GATEWAY_NUMBER_STRING, "");
          sDefaults.putString(KEY_MMS_HTTP_PARAMS_STRING, "");
          sDefaults.putString(KEY_MMS_NAI_SUFFIX_STRING, "");
          sDefaults.putString(KEY_MMS_UA_PROF_TAG_NAME_STRING, "x-wap-profile");
          sDefaults.putString(KEY_MMS_UA_PROF_URL_STRING, "");
          sDefaults.putString(KEY_MMS_USER_AGENT_STRING, "");
          sDefaults.putBoolean(KEY_ALLOW_NON_EMERGENCY_CALLS_IN_ECM_BOOL, true);
          sDefaults.putInt(KEY_EMERGENCY_SMS_MODE_TIMER_MS_INT, 0);
          sDefaults.putBoolean(KEY_USE_RCS_PRESENCE_BOOL, false);
          sDefaults.putBoolean(KEY_FORCE_IMEI_BOOL, false);
          sDefaults.putInt(
                  KEY_CDMA_ROAMING_MODE_INT, TelephonyManager.CDMA_ROAMING_MODE_RADIO_DEFAULT);
          sDefaults.putString(KEY_RCS_CONFIG_SERVER_URL_STRING, "");
  
          // Carrier Signalling Receivers
          sDefaults.putString(KEY_CARRIER_SETUP_APP_STRING, "");
          sDefaults.putStringArray(KEY_CARRIER_APP_WAKE_SIGNAL_CONFIG_STRING_ARRAY,
                  new String[]{
                          "com.android.carrierdefaultapp/.CarrierDefaultBroadcastReceiver:"
                                  + "com.android.internal.telephony.CARRIER_SIGNAL_RESET"
                  });
          sDefaults.putStringArray(KEY_CARRIER_APP_NO_WAKE_SIGNAL_CONFIG_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_CARRIER_APP_REQUIRED_DURING_SIM_SETUP_BOOL, false);
  
  
          // Default carrier app configurations
          sDefaults.putStringArray(KEY_CARRIER_DEFAULT_ACTIONS_ON_REDIRECTION_STRING_ARRAY,
                  new String[]{
                          "9, 4, 1"
                          //9: CARRIER_ACTION_REGISTER_NETWORK_AVAIL
                          //4: CARRIER_ACTION_DISABLE_METERED_APNS
                          //1: CARRIER_ACTION_SHOW_PORTAL_NOTIFICATION
                  });
          sDefaults.putStringArray(KEY_CARRIER_DEFAULT_ACTIONS_ON_RESET, new String[]{
                  "6, 8"
                  //6: CARRIER_ACTION_CANCEL_ALL_NOTIFICATIONS
                  //8: CARRIER_ACTION_DISABLE_DEFAULT_URL_HANDLER
                  });
          sDefaults.putStringArray(KEY_CARRIER_DEFAULT_ACTIONS_ON_DEFAULT_NETWORK_AVAILABLE, new String[] {
                  String.valueOf(false) + ": 7", //7: CARRIER_ACTION_ENABLE_DEFAULT_URL_HANDLER
                  String.valueOf(true) + ": 8"  //8: CARRIER_ACTION_DISABLE_DEFAULT_URL_HANDLER
                  });
          sDefaults.putStringArray(KEY_CARRIER_DEFAULT_REDIRECTION_URL_STRING_ARRAY, null);
  
          sDefaults.putInt(KEY_MONTHLY_DATA_CYCLE_DAY_INT, DATA_CYCLE_USE_PLATFORM_DEFAULT);
          sDefaults.putLong(KEY_DATA_WARNING_THRESHOLD_BYTES_LONG, DATA_CYCLE_USE_PLATFORM_DEFAULT);
          sDefaults.putBoolean(KEY_DATA_WARNING_NOTIFICATION_BOOL, true);
          sDefaults.putBoolean(KEY_LIMITED_SIM_FUNCTION_NOTIFICATION_FOR_DSDS_BOOL, false);
          sDefaults.putLong(KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG, DATA_CYCLE_USE_PLATFORM_DEFAULT);
          sDefaults.putBoolean(KEY_DATA_LIMIT_NOTIFICATION_BOOL, true);
          sDefaults.putBoolean(KEY_DATA_RAPID_NOTIFICATION_BOOL, true);
  
          // Rat families: {GPRS, EDGE}, {EVDO, EVDO_A, EVDO_B}, {UMTS, HSPA, HSDPA, HSUPA, HSPAP},
          // {LTE, LTE_CA}
          // Order is important - lowest precidence first
          sDefaults.putStringArray(KEY_RATCHET_RAT_FAMILIES,
                  new String[]{"1,2","7,8,12","3,11,9,10,15","14,19"});
          sDefaults.putBoolean(KEY_TREAT_DOWNGRADED_VIDEO_CALLS_AS_VIDEO_CALLS_BOOL, false);
          sDefaults.putBoolean(KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL, false);
          sDefaults.putBoolean(KEY_ALLOW_MERGE_WIFI_CALLS_WHEN_VOWIFI_OFF_BOOL, true);
          sDefaults.putBoolean(KEY_ALLOW_ADD_CALL_DURING_VIDEO_CALL_BOOL, true);
          sDefaults.putBoolean(KEY_WIFI_CALLS_CAN_BE_HD_AUDIO, true);
          sDefaults.putBoolean(KEY_VIDEO_CALLS_CAN_BE_HD_AUDIO, true);
          sDefaults.putBoolean(KEY_GSM_CDMA_CALLS_CAN_BE_HD_AUDIO, false);
          sDefaults.putBoolean(KEY_ALLOW_VIDEO_CALLING_FALLBACK_BOOL, true);
  
          sDefaults.putStringArray(KEY_IMS_REASONINFO_MAPPING_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_ENHANCED_4G_LTE_TITLE_VARIANT_BOOL, false);
          sDefaults.putInt(KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT, 0);
          sDefaults.putBoolean(KEY_NOTIFY_VT_HANDOVER_TO_WIFI_FAILURE_BOOL, false);
          sDefaults.putStringArray(KEY_FILTERED_CNAP_NAMES_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_EDITABLE_WFC_ROAMING_MODE_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_BLOCKING_PAY_PHONE_OPTION_BOOL, false);
          sDefaults.putBoolean(KEY_USE_WFC_HOME_NETWORK_MODE_IN_ROAMING_NETWORK_BOOL, false);
          sDefaults.putBoolean(KEY_STK_DISABLE_LAUNCH_BROWSER_BOOL, false);
          sDefaults.putBoolean(KEY_ALLOW_METERED_NETWORK_FOR_CERT_DOWNLOAD_BOOL, false);
          sDefaults.putStringArray(KEY_CARRIER_WIFI_STRING_ARRAY, null);
          sDefaults.putInt(KEY_PREF_NETWORK_NOTIFICATION_DELAY_INT, -1);
          sDefaults.putInt(KEY_EMERGENCY_NOTIFICATION_DELAY_INT, -1);
          sDefaults.putBoolean(KEY_ALLOW_USSD_REQUESTS_VIA_TELEPHONY_MANAGER_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL, true);
          sDefaults.putBoolean(KEY_DISPLAY_VOICEMAIL_NUMBER_AS_DEFAULT_CALL_FORWARDING_NUMBER_BOOL,
                  false);
          sDefaults.putBoolean(KEY_NOTIFY_INTERNATIONAL_CALL_ON_WFC_BOOL, false);
          sDefaults.putBoolean(KEY_HIDE_PRESET_APN_DETAILS_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_VIDEO_CALL_CHARGES_ALERT_DIALOG_BOOL, false);
          sDefaults.putStringArray(KEY_CALL_FORWARDING_BLOCKS_WHILE_ROAMING_STRING_ARRAY,
                  null);
          sDefaults.putInt(KEY_LTE_EARFCNS_RSRP_BOOST_INT, 0);
          sDefaults.putStringArray(KEY_BOOSTED_LTE_EARFCNS_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_USE_ONLY_RSRP_FOR_LTE_SIGNAL_BAR_BOOL, false);
          sDefaults.putBoolean(KEY_DISABLE_VOICE_BARRING_NOTIFICATION_BOOL, false);
          sDefaults.putInt(IMSI_KEY_AVAILABILITY_INT, 0);
          sDefaults.putString(IMSI_KEY_DOWNLOAD_URL_STRING, null);
          sDefaults.putBoolean(KEY_CONVERT_CDMA_CALLER_ID_MMI_CODES_WHILE_ROAMING_ON_3GPP_BOOL,
                  false);
          sDefaults.putStringArray(KEY_NON_ROAMING_OPERATOR_STRING_ARRAY, null);
          sDefaults.putStringArray(KEY_ROAMING_OPERATOR_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL, false);
          sDefaults.putBoolean(KEY_RTT_SUPPORTED_BOOL, false);
          sDefaults.putBoolean(KEY_TTY_SUPPORTED_BOOL, true);
          sDefaults.putBoolean(KEY_HIDE_TTY_HCO_VCO_WITH_RTT_BOOL, false);
          sDefaults.putBoolean(KEY_DISABLE_CHARGE_INDICATION_BOOL, false);
          sDefaults.putBoolean(KEY_SUPPORT_NO_REPLY_TIMER_FOR_CFNRY_BOOL, true);
          sDefaults.putStringArray(KEY_FEATURE_ACCESS_CODES_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_IDENTIFY_HIGH_DEFINITION_CALLS_IN_CALL_LOG_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_PRECISE_FAILED_CAUSE_BOOL, false);
          sDefaults.putBoolean(KEY_SPN_DISPLAY_RULE_USE_ROAMING_FROM_SERVICE_STATE_BOOL, false);
          sDefaults.putBoolean(KEY_ALWAYS_SHOW_DATA_RAT_ICON_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_4G_FOR_LTE_DATA_ICON_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_4G_FOR_3G_DATA_ICON_BOOL, false);
          sDefaults.putString(KEY_OPERATOR_NAME_FILTER_PATTERN_STRING, "");
          sDefaults.putString(KEY_SHOW_CARRIER_DATA_ICON_PATTERN_STRING, "");
          sDefaults.putBoolean(KEY_HIDE_LTE_PLUS_DATA_ICON_BOOL, true);
          sDefaults.putBoolean(KEY_LTE_ENABLED_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_TDSCDMA_BOOL, false);
          sDefaults.putStringArray(KEY_SUPPORT_TDSCDMA_ROAMING_NETWORKS_STRING_ARRAY, null);
          sDefaults.putBoolean(KEY_WORLD_MODE_ENABLED_BOOL, false);
          sDefaults.putString(KEY_CARRIER_SETTINGS_ACTIVITY_COMPONENT_NAME_STRING, "");
          sDefaults.putBoolean(KEY_CARRIER_CONFIG_APPLIED_BOOL, false);
          sDefaults.putBoolean(KEY_CHECK_PRICING_WITH_CARRIER_FOR_DATA_ROAMING_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_DATA_CONNECTED_ROAMING_NOTIFICATION_BOOL, false);
          sDefaults.putIntArray(KEY_LTE_RSRP_THRESHOLDS_INT_ARRAY,
                  new int[] {
                          -128, /* SIGNAL_STRENGTH_POOR */
                          -118, /* SIGNAL_STRENGTH_MODERATE */
                          -108, /* SIGNAL_STRENGTH_GOOD */
                          -98,  /* SIGNAL_STRENGTH_GREAT */
                  });
          sDefaults.putIntArray(KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY,
                  new int[] {
                          -115,  /* SIGNAL_STRENGTH_POOR */
                          -105, /* SIGNAL_STRENGTH_MODERATE */
                          -95, /* SIGNAL_STRENGTH_GOOD */
                          -85  /* SIGNAL_STRENGTH_GREAT */
                  });
          sDefaults.putStringArray(KEY_BANDWIDTH_STRING_ARRAY, new String[]{
                  "GPRS:24,24", "EDGE:70,18", "UMTS:115,115", "CDMA-IS95A:14,14", "CDMA-IS95B:14,14",
                  "1xRTT:30,30", "EvDo-rev.0:750,48", "EvDo-rev.A:950,550", "HSDPA:4300,620",
                  "HSUPA:4300,1800", "HSPA:4300,1800", "EvDo-rev.B:1500,550:", "eHRPD:750,48",
                  "HSPAP:13000,3400", "TD-SCDMA:115,115", "LTE:30000,15000", "NR_NSA:47000,15000",
                  "NR_NSA_MMWAVE:145000,15000", "NR_SA:145000,15000"});
          sDefaults.putBoolean(KEY_BANDWIDTH_NR_NSA_USE_LTE_VALUE_FOR_UPSTREAM_BOOL, false);
          sDefaults.putString(KEY_WCDMA_DEFAULT_SIGNAL_STRENGTH_MEASUREMENT_STRING, "rssi");
          sDefaults.putBoolean(KEY_CONFIG_SHOW_ORIG_DIAL_STRING_FOR_CDMA_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_CALL_BLOCKING_DISABLED_NOTIFICATION_ALWAYS_BOOL, false);
          sDefaults.putBoolean(KEY_CALL_FORWARDING_OVER_UT_WARNING_BOOL, false);
          sDefaults.putBoolean(KEY_CALL_BARRING_OVER_UT_WARNING_BOOL, false);
          sDefaults.putBoolean(KEY_CALLER_ID_OVER_UT_WARNING_BOOL, false);
          sDefaults.putBoolean(KEY_CALL_WAITING_OVER_UT_WARNING_BOOL, false);
          sDefaults.putBoolean(KEY_SUPPORT_CLIR_NETWORK_DEFAULT_BOOL, true);
          sDefaults.putBoolean(KEY_SUPPORT_EMERGENCY_DIALER_SHORTCUT_BOOL, true);
          sDefaults.putBoolean(KEY_USE_CALL_FORWARDING_USSD_BOOL, false);
          sDefaults.putBoolean(KEY_USE_CALLER_ID_USSD_BOOL, false);
          sDefaults.putInt(KEY_CALL_WAITING_SERVICE_CLASS_INT, 1 /* SERVICE_CLASS_VOICE */);
          sDefaults.putString(KEY_5G_ICON_CONFIGURATION_STRING,
                  "connected_mmwave:5G,connected:5G");
          sDefaults.putInt(KEY_5G_ICON_DISPLAY_GRACE_PERIOD_SEC_INT, 0);
          /* Default value is 1 hour. */
          sDefaults.putLong(KEY_5G_WATCHDOG_TIME_MS_LONG, 3600000);
          sDefaults.putBoolean(KEY_UNMETERED_NR_NSA_BOOL, false);
          sDefaults.putBoolean(KEY_UNMETERED_NR_NSA_MMWAVE_BOOL, false);
          sDefaults.putBoolean(KEY_UNMETERED_NR_NSA_SUB6_BOOL, false);
          sDefaults.putBoolean(KEY_ASCII_7_BIT_SUPPORT_FOR_LONG_MESSAGE_BOOL, false);
          /* Default value is minimum RSRP level needed for SIGNAL_STRENGTH_GOOD */
          sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSRP_INT, -108);
          /* Default value is minimum RSRP level needed for SIGNAL_STRENGTH_MODERATE */
          sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSRP_INT, -118);
          /* Default value is minimum RSSNR level needed for SIGNAL_STRENGTH_GOOD */
          sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_RSSNR_INT, 45);
          /* Default value is minimum RSSNR level needed for SIGNAL_STRENGTH_MODERATE */
          sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_EXIT_THRESHOLD_RSSNR_INT, 10);
          /* Default value is 1024 kbps */
          sDefaults.putInt(KEY_OPPORTUNISTIC_NETWORK_ENTRY_THRESHOLD_BANDWIDTH_INT, 1024);
          /* Default value is 10 seconds */
          sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_ENTRY_OR_EXIT_HYSTERESIS_TIME_LONG, 10000);
          /* Default value is 10 seconds. */
          sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_HYSTERESIS_TIME_LONG, 10000);
          /* Default value is 3 seconds. */
          sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_DATA_SWITCH_EXIT_HYSTERESIS_TIME_LONG, 3000);
          sDefaults.putBoolean(KEY_PING_TEST_BEFORE_DATA_SWITCH_BOOL, true);
          sDefaults.putBoolean(KEY_SWITCH_DATA_TO_PRIMARY_IF_PRIMARY_IS_OOS_BOOL, true);
          /* Default value is 60 seconds. */
          sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_PING_PONG_TIME_LONG, 60000);
          /* Default value is 10 seconds. */
          sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_BACKOFF_TIME_LONG, 10000);
          /* Default value is 60 seconds. */
          sDefaults.putLong(KEY_OPPORTUNISTIC_NETWORK_MAX_BACKOFF_TIME_LONG, 60000);
          sDefaults.putAll(Gps.getDefaults());
          sDefaults.putAll(Wifi.getDefaults());
          sDefaults.putIntArray(KEY_CDMA_ENHANCED_ROAMING_INDICATOR_FOR_HOME_NETWORK_INT_ARRAY,
                  new int[] {
                          1 /* Roaming Indicator Off */
                  });
          sDefaults.putStringArray(KEY_EMERGENCY_NUMBER_PREFIX_STRING_ARRAY, new String[0]);
          sDefaults.putBoolean(KEY_USE_USIM_BOOL, false);
          sDefaults.putBoolean(KEY_SHOW_WFC_LOCATION_PRIVACY_POLICY_BOOL, false);
          sDefaults.putBoolean(KEY_AUTO_CANCEL_CS_REJECT_NOTIFICATION, true);
          sDefaults.putString(KEY_SMART_FORWARDING_CONFIG_COMPONENT_NAME_STRING, "");
          sDefaults.putBoolean(KEY_ALWAYS_SHOW_PRIMARY_SIGNAL_BAR_IN_OPPORTUNISTIC_NETWORK_BOOLEAN,
                  false);
          sDefaults.putString(KEY_SUBSCRIPTION_GROUP_UUID_STRING, "");
          sDefaults.putBoolean(KEY_IS_OPPORTUNISTIC_SUBSCRIPTION_BOOL, false);
          sDefaults.putIntArray(KEY_GSM_RSSI_THRESHOLDS_INT_ARRAY,
                  new int[] {
                          -107, /* SIGNAL_STRENGTH_POOR */
                          -103, /* SIGNAL_STRENGTH_MODERATE */
                          -97, /* SIGNAL_STRENGTH_GOOD */
                          -89,  /* SIGNAL_STRENGTH_GREAT */
                  });
          sDefaults.putBoolean(KEY_SUPPORT_WPS_OVER_IMS_BOOL, true);
          sDefaults.putStringArray(KEY_CARRIER_CERTIFICATE_STRING_ARRAY, null);
          sDefaults.putLong(KEY_DATA_SWITCH_VALIDATION_TIMEOUT_LONG, 2000);
          sDefaults.putLong(KEY_DATA_SWITCH_VALIDATION_MIN_GAP_LONG, 0);
      }
  
      /**
       * Gets the configuration values for a particular subscription, which is associated with a
       * specific SIM card. If an invalid subId is used, the returned config will contain default
       * values. After using this method to get the configuration bundle,
       * {@link #isConfigForIdentifiedCarrier(PersistableBundle)} should be called to confirm whether
       * any carrier specific configuration has been applied.
       *
       * <p>Requires Permission:
       * {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
       *
       * @param subId the subscription ID, normally obtained from {@link SubscriptionManager}.
       * @return A {@link PersistableBundle} containing the config for the given subId, or default
       *         values for an invalid subId.
       */
      @Nullable
      public PersistableBundle getConfigForSubId(int subId) {
          try {
              ICarrierConfigLoader loader = getICarrierConfigLoader();
              if (loader == null) {
                  Rlog.w(TAG, "Error getting config for subId " + subId
                          + " ICarrierConfigLoader is null");
                  return null;
              }
              return loader.getConfigForSubId(subId, mContext.getOpPackageName());
          } catch (RemoteException ex) {
              Rlog.e(TAG, "Error getting config for subId " + subId + ": "
                      + ex.toString());
          }
          return null;
      }
  
      /**
       * Overrides the carrier config of the provided subscription ID with the provided values.
       *
       * Any further queries to carrier config from any process will return the overridden values
       * after this method returns. The overrides are effective for the lifetime of the phone process
       * until the user passes in {@code null} for {@code overrideValues}. This removes all previous
       * overrides and sets the carrier config back to production values.
       *
       * May throw an {@link IllegalArgumentException} if {@code overrideValues} contains invalid
       * values for the specified config keys.
       *
       * NOTE: This API is meant for testing purposes only.
       *
       * @param subscriptionId The subscription ID for which the override should be done.
       * @param overrideValues Key-value pairs of the values that are to be overridden. If set to
       *                       {@code null}, this will remove all previous overrides and set the
       *                       carrier configuration back to production values.
       * @hide
       */
      @RequiresPermission(Manifest.permission.MODIFY_PHONE_STATE)
      @SystemApi
      @TestApi
      public void overrideConfig(int subscriptionId, @Nullable PersistableBundle overrideValues) {
          try {
              ICarrierConfigLoader loader = getICarrierConfigLoader();
              if (loader == null) {
                  Rlog.w(TAG, "Error setting config for subId " + subscriptionId
                          + " ICarrierConfigLoader is null");
                  return;
              }
              loader.overrideConfig(subscriptionId, overrideValues);
          } catch (RemoteException ex) {
              Rlog.e(TAG, "Error setting config for subId " + subscriptionId + ": "
                      + ex.toString());
          }
      }
  
      /**
       * Gets the configuration values for the default subscription. After using this method to get
       * the configuration bundle, {@link #isConfigForIdentifiedCarrier(PersistableBundle)} should be
       * called to confirm whether any carrier specific configuration has been applied.
       *
       * <p>Requires Permission:
       * {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
       *
       * @see #getConfigForSubId
       */
      @Nullable
      public PersistableBundle getConfig() {
          return getConfigForSubId(SubscriptionManager.getDefaultSubscriptionId());
      }
  
      /**
       * Determines whether a configuration {@link PersistableBundle} obtained from
       * {@link #getConfig()} or {@link #getConfigForSubId(int)} corresponds to an identified carrier.
       * <p>
       * When an app receives the {@link CarrierConfigManager#ACTION_CARRIER_CONFIG_CHANGED}
       * broadcast which informs it that the carrier configuration has changed, it is possible
       * that another reload of the carrier configuration has begun since the intent was sent.
       * In this case, the carrier configuration the app fetches (e.g. via {@link #getConfig()})
       * may not represent the configuration for the current carrier. It should be noted that it
       * does not necessarily mean the configuration belongs to current carrier when this function
       * return true because it may belong to another previous identified carrier. Users should
       * always call {@link #getConfig()} or {@link #getConfigForSubId(int)} after receiving the
       * broadcast {@link #ACTION_CARRIER_CONFIG_CHANGED}.
       * </p>
       * <p>
       * After using {@link #getConfig()} or {@link #getConfigForSubId(int)} an app should always
       * use this method to confirm whether any carrier specific configuration has been applied.
       * Especially when an app misses the broadcast {@link #ACTION_CARRIER_CONFIG_CHANGED} but it
       * still needs to get the current configuration, it must use this method to verify whether the
       * configuration is default or carrier overridden.
       * </p>
       *
       * @param bundle the configuration bundle to be checked.
       * @return boolean true if any carrier specific configuration bundle has been applied, false
       * otherwise or the bundle is null.
       */
      public static boolean isConfigForIdentifiedCarrier(PersistableBundle bundle) {
          return bundle != null && bundle.getBoolean(KEY_CARRIER_CONFIG_APPLIED_BOOL);
      }
  
      /**
       * Calling this method triggers telephony services to fetch the current carrier configuration.
       * <p>
       * Normally this does not need to be called because the platform reloads config on its own.
       * This should be called by a carrier service app if it wants to update config at an arbitrary
       * moment.
       * </p>
       * <p>Requires that the calling app has carrier privileges.
       * <p>
       * This method returns before the reload has completed, and
       * {@link android.service.carrier.CarrierService#onLoadConfig} will be called from an
       * arbitrary thread.
       * </p>
       * @see TelephonyManager#hasCarrierPrivileges
       */
      public void notifyConfigChangedForSubId(int subId) {
          try {
              ICarrierConfigLoader loader = getICarrierConfigLoader();
              if (loader == null) {
                  Rlog.w(TAG, "Error reloading config for subId=" + subId
                          + " ICarrierConfigLoader is null");
                  return;
              }
              loader.notifyConfigChangedForSubId(subId);
          } catch (RemoteException ex) {
              Rlog.e(TAG, "Error reloading config for subId=" + subId + ": " + ex.toString());
          }
      }
  
      /**
       * Request the carrier config loader to update the cofig for phoneId.
       * <p>
       * Depending on simState, the config may be cleared or loaded from config app. This is only used
       * by SubscriptionInfoUpdater.
       * </p>
       *
       * @hide
       */
      @SystemApi
      @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
      public void updateConfigForPhoneId(int phoneId, String simState) {
          try {
              ICarrierConfigLoader loader = getICarrierConfigLoader();
              if (loader == null) {
                  Rlog.w(TAG, "Error updating config for phoneId=" + phoneId
                          + " ICarrierConfigLoader is null");
                  return;
              }
              loader.updateConfigForPhoneId(phoneId, simState);
          } catch (RemoteException ex) {
              Rlog.e(TAG, "Error updating config for phoneId=" + phoneId + ": " + ex.toString());
          }
      }
  
      /** {@hide} */
      public String getDefaultCarrierServicePackageName() {
          try {
              return getICarrierConfigLoader().getDefaultCarrierServicePackageName();
          } catch (Throwable t) {
              return null;
          }
      }
  
      /**
       * Returns a new bundle with the default value for every supported configuration variable.
       *
       * @hide
       */
      @NonNull
      @SystemApi
      @SuppressLint("Doclava125")
      public static PersistableBundle getDefaultConfig() {
          return new PersistableBundle(sDefaults);
      }
  
      /** @hide */
      @Nullable
      private ICarrierConfigLoader getICarrierConfigLoader() {
          return ICarrierConfigLoader.Stub
                  .asInterface(ServiceManager.getService(Context.CARRIER_CONFIG_SERVICE));
      }
  }
  