Why does my device keep restarting
Why does my device keep going to a blue screen and then resetting??
苹果 iPhone 5s 于2013年9月10日公布。该设备的维修与以前的型号相似，需要螺丝刀和撬棒。可使用GSM或CDMA / 16、32或64 GB。颜色有银色、金色和太空灰。
If you can definitely rule out long screw damage try putting the phone into dfu mode, then restoring to a backup.
Plug your device into your computer/laptop
Hold the power button for three seconds
Hold the power and home button for ten seconds
Release the power button but continue to hold the home button
After about fifteen seconds your computer should alert you that it has detected a device in dfu mode
You may not be able to achieve this in the first try. It may take a few tries
It might just as a simple as a bad lightening connector on the charging cable. That happened to me and I had the same issue on my iPhone. I was able to rotate the lightening end of the cable 180 degrees and that worked so I it charged enough till I got a new cable three days later.
So first just try a different charger and charging cable.