iPhone 4 has no sound during calls
Recently replaced my iPhone 4 screen. When i tried to make a call the phone went straight to speaker-phone once the call was answered. I could not hear the person on the other end of the line, nor could they hear me. I have tried phoning with headphones bluetooth headset and both earpiece/ speaker-phone but the problem still persists. I tried replacing the earpiece but didn't work.
Skype works great. One thing i noticed is that when i make a call with Skype the proximity sensor works. However when making a phone call the screen stays on no matter what.
I put the old screen on to see if that would make any difference but did not succeed.
In addition, i looked at the logic board and i found that the very top was very so slightly chipped? I am unsure of what difference this would make as no component is damaged.
Is this a good question?