When using the dialer or answering calls, my screen will sometimes black out repeatedly. It blacks out, and usually comes back after moving the phone (i.e. tilting it), but it immediately blacks out again. I have to fiddle with it to get the screen to stay on long enough to dial a number. This morning the screen wouldn't turn on to let me answer a call. Turns out the screen was working as I pressed the answer button even with the screen completely black. I have searched but not found an answer to this. The only "fix" I have found is to reboot the phone when this happens. Have any of you heard of this before? Any ideas will be greatly appreciated. I'm running 2.2 with the latest updates (Verizon Droid2), and I'm NOT rooted yet So far as I can tell this did not start after installing any apps.