Read the following conversation and answer the question.

W: I dialed your phone number many times yesterday, but I couldn't get through. What's the matter?

M: Oh, there was something wrong with my mobile. I will have to buy a new one.

Question: Why couldn't the woman get through to the man? 

- His mobile was stolen.

- His mobile didn't work.

- His mobile was power off.


His mobile didn't work.