09-06-2018 09:32 AM
Try stopping the TemPow service under settings, system, Dev options, tempow service. This service partially controls noise cancelling and audio services. Might be messing with mics.
12-18-2018 06:27 AM
My moto x4 app sound went very low too. I could not hear (Hello Moto). I booted to safe mode and saw the media volume was very low. I increased it and rebooted out of safe mode and now "Hello Moto " is heard again and the medi voulme is good in my apps now. Thank you
My question with Android 8.1 I can not find Hardware Tests?
"You may also go to Device Help > Fix > Hardware Tests > Speaker > Passed/Failed."