I replaced the screen and frame on a Sony Xperia X compact and since then when calling someone the other person sometimes can't really hear me good, sometimes it works fine and a second later it is very quiet and just doesn't work like it should.
What could the problem be? I already took the phone apart again and looked if there was any dust or something between the microphone (I hope it was the microphone, on the bottom right side of the mainboard?) and the screen but I didn't see anything.
Is it even possible to replace the microphone?