How can I fix an iPhone 4 outgoing call sound problem?

[iMore Question]

iphone 4 outgoing call sound problem

I am using iphone 4, 16 GB, ios 7.1.2 version . I have a problem in microphone or else. When I call someone, I can hear the voice of the other side but couldn't hear my voice to the other side.
So, what is the solution for it?

 

[Tartarus]

Re: iphone 4 outgoing call sound problem

My first guess would be to go to open the Voice Memos app to see if your microphone is working.

The iPhone is out for a while now and it's quite possible your microphone stopped working due to mechanic failures.

You can have it checked at an Apple Store or by a Apple certified repair service.