iPhone 7 microphones not working during calls only

Fozzo 07/31/2019

I have an iPhone 7 which has microphones not working only during calls but all microphones works in video and all other apps. The iphone had a cracked baseband pmu ic which didn’t make it boot. It had a short bootloop. I changed it then it boots correctly but had microphones problem. I already change audio ic and i made c12 jumper. iPhone boots correctly and fast but microphones still not working during calls. I took off audio ic again and I made four jumper than I put a new ic bust still microphones don’t work only during calls. Any suggestions please?



Check other circuits of audio IC whether disconnect or not. It also may be caused by soldering of baseband CPU.

Yanis Fredj


Have you checked related circuit of iPhone 7?
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