Strange thing is happening while speaking on the phone. It will automatically dial from my speed dial list. I understand that there is no proximity sensor to shut the screen off, but it somehow shuts off when your cheek or ear is touching the dial pad area. Problem is, if I move at all, the screen will come back on. Is there a technique to this or some kind of setting that I need to adjust? This is my first touch phone and so far I really like it, but this auto dial in the middle of a call is very concerning.