Hi all, I've had an iPhone 3G for one year and a half. I Opened it up a few months ago to change the back cover, which was broken; and I broke a bit the plastic piece of connector 3 of the mother board (see at the Attached image); However, It worked perfectly... Until now, that I've reopened my iPhone to change again the backcover (false covers aren't very good...), and when I finished... Noticed that the earpiece is not working! I can't hear anything while calling! I know that the connector 3 of the screen is the cause, because proximity sensor isn't working neither... But my question is: Is there any way to know which part of the "connector 3" has been broken? The MoBo, or the Screen Flex? Because if it's the second, I can replace it for a few bucks, but if not... :S Or... Is there any other connector that I could damage or put badly, so they are doing contact with wrong pieces, etc etc? Notice that I had to disarm the whole iPhone to change the cover... So perhaps... I hope you've understood me, despite my english... Thanks.