Cellular audio not working - Facetime audio, voice memo etc. working
If I make a cellular call - I can NOT hear or the other person can NOT hear
If I make a cellular call - Loudspeaker - I can NOT hear or the other person can NOT hear
If I make a facetime call - I CAN hear and the other person CAN hear me
In video, voice memos etc. - Any audio records and plays back without a problem
This is a issue with the soldering of the Sound Chip. It can be resoldered or '''cheaply fixed:
Is this a good question?