Long story short my phone was slammed in a car door. The screen didn't crack or anything and the lights beside the home button still flash and its vibrates when I hold down the power button, I took the battery out and put it back in but that didn't work. I called it from my home line and it didn't ring but the blue dot at the top left hand corner came on so I know it connected. I think it may have something to do with the screen but I don't know. any help would be greatly appreciated!