I dropped my phone and the screen is cracked pretty bad. The screen doesn't work, but when I press the lock/unlock button the light behind the back, home, and search buttons lights up. The touch screen still works (I think) because when I touch the back, home, and search buttons, the little vibration you get from touching those buttons is still there. The only thing that isn't working is the screen. The screen won't light up when I press the lock/unlock button. What do I need to do in order to fix my phone? Also, I'm on a 2-year contract plan and I've only had my phone for a year so far FYI.