I've had my IPhone 4 for 3 months now, and I've been pretty careful about dropping it and being gentle with it, as I'm on a three year contract with it. My phone is now currently stuck in an app. Literally, stuck. I tried exiting the app, and the home button was unresponsive. I tried the sleep/power button too and it was also unresponsive. I again tried the power button to try and shut it down .. didn't work. I went on a rampage and pressed every single friggin button on my damn phone, didn't do anything. But I did discover that the button that puts my phone on vibrate works perfectly fine, and so does my volume buttons! WTF. Someone please tell me what's a matter with my phone D: