This iPhone was never jailbroken. My girlfriend and I bought our iPhone 4s on launch day. Hers just went out a couple nights ago. Plugged it into charger, went to use it a lil bit later and it wouldn't come back on. Tried plugging it into laptop, DFU Mode, etc... nada. We didnt' buy the Applecare warrantys Will the Genius bar make her buy a new iPhone 4 or maybe a replacement? She thinks they'll make her buy a new one, but I said to go in and be polite and friendly and they'll most def help her out (that's been my experience).