Iv tried everything I can to make it stop and go back to normal. About 2 weeks ago I replaced the battery and screen due to it dying at 90% and constantly having to be on the charger. It worked great up until now. Help! I have no idea what the problem could be
iPhone 5s, iOS 9.2
Hello there Cece459,
It sounds like your phone is unexpectedly restarting after some recent repairs you made to it. Although this strikes me initially as a hardware issue, I would definitely suggest we troubleshoot the software on the device. First quit all the running apps on the phone:
1. Press the Home button two times quickly. You'll see small previews of your recently used apps.
2. Swipe left to find the app you want to close.
3. Swipe up on the app's preview to close it.
When you have done that force the phone to restart with the Home and Sleep/Wake buttons as outlined in the following article and test the issue again:
iOS: Turning off and on (restarting) and resetting
If the issue persists, backup your device to iTunes, then restore it as new and verify that it works.
How to erase your iOS device and then set it up as a new device or restore it from backups
If it does, then restore your backup to either verify it still works and the software just needed reinstalled, or isolate the issue to the backup file itself.
If none of that works then that tells me there is a hardware issue that needs a repair:
Thank you for using Apple Support Communities.
Iphone 5 keeps rebooting HELP!
