Chosen Solution
Everything works but when I make a phone call I can’t hear them and they can’t hear me.
Can you hear yourself if you make a voice recording in voice memos?
Sounds like you have a bad Audio IC chip which can be related to the “Loop Disease”. I dont know if Apple has officially said anything on this matter but you can research further iPhone 7 Loop Disease and see what fixes may be out there or if Apple is doing anything as far as replacing devices.
