I have a 5S which won't start no matter what I try. More info: - for several months, part of the screen, a band about half an inch wide, and about 2/3rd of the way up, won't respond to touch. - For several months, the phone screen has been going blue then rebooting at random intervals (perhaps 2xday. - Last month it would start loosing the GPS and 4G signals if I started using navigation while on 4G. It would go into a continuous cycle of restarting the radios and dropping them again. If I started navigation while on home wifi, it worked fine for the rest of the journey. - Last month I dropped it and cracked the screen. I had it replaced at a phone shop. I was hoping this would improve the touch issue, and it did but it came back after a while. The random rebooting continued but it didn't really affect my usage. The navigation issue was fixed though which was a relief. - Recently it would go dead then not restart. I would have to wait a while then try to restart it. This started getting harder and harder, I would have to wait for the battery to go completely dead and then plug it in again to restart. (Sometimes it got hot while blacked out, indicating a stuck process, so I guessed it was still on even though the screen was blank). Now it's completely dead. I've tried holding down the power and home button, I've tried plugging it into a 2amp iPad charger, nada, still ded. Any ideas? If I can start it one last time then I can do a full backup and give it the last rites.