I'm having a problem with my Motorola Droid Razr M. When I make a phone call, the screen should turn off when I have the phone up to my ear. Unfortunately it stays on, so my ear ends up disconnecting half the calls, or pressing all sorts of things that it shouldn't. Did I accidentally turn off a setting somewhere? I looked all through the settings, and couldn't find anything to pertain to that. It started happening after I put a screen protector and decal skin on, so could that have something to to with it?