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@abdulhalim933 wrote:me too i had this problem with my new sony z5 compact with 6.0.1 android no one can hear me after 5 sec of call but the audio still bad
please any help
i have read about mic noise reduction option in old model of sony that fix this problem
i wish sony company release new update for system to fix this problem
sorry for my bad english
I also having a same problem with my z5 compact. I bought it on July 2016. On Jan 2017 my z5 compact screen suddently blank and i cant turn it on. I went to the service centre and repair it. They have change it with the new board.
And then a new problem happend. When i calling somebody and people calling me, they cant heard my voice. I already doing diagnostics test but there is no problem found. I ve change my sim card with other the same problem also happpend. I also have done factory reset for twice. But the problem is still there. Z5 compact is not a cheap mobile phone. If i know this situation will be happend i ll not buy this handphone. Sony! Please get alert to your smart phone problems or your customer will not believe on you anymore in the future!
it seem sony do not want to help us to solve this proplem.
i will return back to my old nokia c7 mobil because it has a very good mic in the calls.
I tested the microphone of my no issue perfectly clear recording but people still can't hear me on any call
The whole was plugged with something indeed! I've been looking for an answer to this problem for months! Thank you!
Similar problem 
Video recording with sound works
Nobody can hear me when calling
Mono audio recording isnt working
Diagnostic app does not record my voice
I finally sent mine back for repair under warranty and it had the microphone replaced. Now callers can hear me fine.
Kevin