Chosen Solution
I got a iphone to repair, i replaced the whole dock connector. but now during calls it looks like the phone is switching between the 2 dock mics during a call. During the call all the high tones sometimes dissappear. and after 10 seconds the high tones are back (on the receiver end) what could it be?
I have had this issue with a customers phone, only it was an iPhone 4 - Have you tried installing a new Front camera sensor? That fixed my issue