so.... I have a 3g 16gb that I can only use the speakerphone with. I can not hear out of the earpiece, but I know that the mic and speaker works no problem. I have also tried the earphone trick. Also, when putting your hand over the earpiece while making calls, the screen does not go black. I opened the iphone up to see if cable 3 was connected. It appears to have been. What part do I need or if I bought a complete LCD would that include the parts I need as well!