It just happened. I've babied this iPhone ever since I got it back in October. I got out of the gym, went to my car, I sent a text message and when I checked my iPhone 2 minutes later it was off? It wouldn't turn on.. I got home.. Plugged it in to charge and nothing?! What the? I'm confused? I don't know how what caused this.. What should I do? I'm guessing take it to Apple? Wow, this really sucks.. My first real issue with an iPhone. And I've had the 3GS & 4. No issues. Has anyone heard anything like this?