I have a Iphone 4 that was dropped while still in the case. There is no external damage to phone. The phone was not dropped in water. It now does not turn on. Im having trouble figuring out what the hardware problem is. I fix iPhones and this has me puzzled. Initially the phone did not turn on at all, then i checked inside the phone and the display connectors were loose, i seated those connectors to the logic board, now the camera flash stays on constantly and the iPhone does not turn on. I have held the power/home button combo for 1min with no apple logo. Any suggestions? THere is no obvious damage on the inside of the phone and I have tried plugging it up to wall charger and iTunes with no luck. Any ideas would be greatly appreciated.