Question: Iphone 7 128 audio disabled
My phone is iPhone 7 128 GB (not plus).
It was on iOS 10.2
Yesterday suddenly (without any recent drops or liquid near it) it started to freeze intermittently and when I tried to call it from another phone I cannot hear anything, (both ways).
I attempted all the easy fix steps, restart --> Soft Reset --> Reset Settings --> cleaning the mic and earpiece.
Then I used iTunes to upgrade it to iOS 11.3
The freezing is fixed but something is very wrong with the audio.
During a call cannot hear and mic is not working. The speaker sign is disabled.
I tried the voice recording app, the record button is also disabled
It plays videos normally, the ringer works, the click sounds work, etc.
I tried to connect a wired headphone, it is not detected by the phone (charging and connecting to PC is working)
I tried a bluetooth headset it works as well.
Other things I tried unsuccessfully.
Set up as new iphone
restore to clean original firmware
use a different iCloud account
I really cannot narrow this down to a software issue (since there was also the freezing issue that got fixed) or a hardware issue. Any advice , troubleshooting or fix steps.
iPhone 7, iOS 11.3, 128 GB