My problem is that my mic while calling is like muted.
Before you start saying "there a post on that", I know ! But it did not helped me.
I have changed the usb + microphone board on my i9100 and even the secondary mic with the earpiece.
And I still have the problem.
The mic is very very very low and if I blow into the mic hole while calling, I can hear it on the secondary phone that mic works, of if I shout I hear that very very very low.
I have tried the secret menu. no succes!
Even downgraded from 4.2
I am on 2.3.6
Please help me guys.