Currently Being ModeratedDec 18, 2012 7:30 PM (in response to tracy lfromedmonton)
Sounds like a problem with the proximity sensor, which turns off the screen when on a call with the phone is near your face/ear and should turn it back on when the phone moves away again. Try cleaning the screen, especially near the top by the speaker. Also try removing your screen protector.
Currently Being ModeratedDec 18, 2012 7:29 PM (in response to tracy lfromedmonton)
If you have a case on your iphone, then remove it and see if tht solves it.