Hi, my wife's AT&T iphone 4 was submerged underwater. Initially, the light for the flash stayed on until the battery ran down. I took it apart sop up some water and let it dry out. Three days later I put it back together. I charged it a bit and turned it on, but without the SIM. I got the activation screed. Then I put in the SIM, and also got the activation screen. Problem a) it will only boot up when connected to the external usb charger. When not connected, it does nothing. When connected via usb to my pc, I get the initial apple but it won't boot to the activation screen. Problem b) There are hundreds of photos of our son on there that aren't backed up (no, no local backups, no icloud). If I go through the activation, I'm concerned that I will lose those photos. Is that the case? And if so is there anything I can do?