More and more often it seems, my phone will refuse to sense my need to wake the screen up during a call. For example: I call a phone number, and as it rings for ~30 seconds.. the screen goes to sleep. The receiving person fails to answer call, and their Voice-Mail comes on. I decide I don't want leave a message, so I bring phone from my ear and expect the screen to wake up so I can end the call. But the screen fails to wake and I am stuck with a black screen. Often embarrassingly going into the persons voicemail while I"m trying to wake up my phone to end the call! I've tried everything. Bringing it back to my ear and back down again, shaking and turning it, pressing all the buttens. Nothing. Sometimes the screen will flicker or quickly wake up for a split seconds a few times while trying to wake it, but quickly turns back off before I can end the call. WHAT GIVES?!?! The phone is two weeks old. Everything is updated to my knowledge. Never been dropped. Screen protector does not physically interfere with front sensors. Thanks guys!