I am having micdrophone issues with my Google Pixel 5. I have replaced two of them so far and the issue is still ther. The issue is the microphone either goes completely silent or the volume is very very low. Any suggestions or fixex?
That's odd to have the same problem on 3 phones, are you using a case? If so take it off.
Try starting the phone in safe mode see here for instructions if the problem goes away then it could be an app on the phone that is causing the problem.
If it is an app you would either have to uninstall them one by one until the problem goes away or factory reset the phone and set it up as a new phone do not do a restore then install the apps one by one. Make sure you backup your data before doing any factory reset.