I dropped my iPhone 5s and the phone froze for a second then the screen went black. Since then I have tried hooking the phone to my computer (so that I could back it up again) and now all it does is buzz every few seconds. Occasionally it will have a larger pause between buzzes and at other times it will do a double buzz. I have tried to hold down the home button to activate siri so that I can use voice commands to take the passcode off, does anyone have any solutions to work around this so I can backup the phone since nothing seems to be working? My computer does recognize the phone, but needs the passcode off or unlocked to do the backup. Does anyone know if I simply have a broken screen, or if it sounds like something worse than that?