So when you normally make a call and the screen turns black when you put the phone next to your face. When you pull it away from your face the screen is supposed to come back on. My Ally's screen refuses to light back up. If I slide the keyboard out before the call ends the screen will come back on. If the call ends before I do that I have a black/dead screen for a random amount of time. This happened on stock rom and Velocity. Any ideas any one?