No sound from earpiece, speaker or headphones when on calls.
Well this is my first post here, after reading a lot. Hopefully I'll get a solution to my problem.
I can't hear anything when I'm on a call, there's like a grabled sound from the earpiece, no sound on speaker, and no sound on headphones. But the speaker and headphones works fine for the other functions such as ipod, apps, etc. The only problem is that when I place/receive a call, I can't hear nothing from the earpiece, but there's no sound on speaker or headphone.
I've tried the plug and unplug headphones hundreds of times, cleaning the headphone jack, resetting all settings, restore to original 2.2 (it's legally unlocked).
But nothing seems to help, if I press the volume button when I'm on a call, it doesn't display headphones are connected, so this is not the typical problem of iPhone thinking headphones are connected.
This is an iPhone 3G 16GB running fw v2.2
Any help guys will be much appreciated.
Thank you and happy holidays!