Completely out of the blue my phone's screen went black and won't 'wake up'. The buttons, led light and keypad still light up so I know the phone is one. But the screen is completely blank. I've read many different forums and they all say to change different settings -- kinda hard to do when there isn't a screen to do that! Also, others said removing the battery and restarting the phone works. No such luck with mine. Screen stays blank even after rebooting, taking sim card and battery out and leaving it alone for hours. No idea what to do.