My samsung galaxy s2 took a dive off the counter to the tile floor....to make things worst a heavy three ring binder fell on top of it in the process. Now when I push the power button the screen stays black but the bottom row of icons lights up. The sound works perfectly. I can receive phone calls and texts. I can answer phone calls by guessing where to place my finger and slide to the right. The phone appears to be fully functional except I can't see anything on the screen. Turning off/on the phone doesn't fix it. HELP!