Learn how to insert and remove the battery on the Apple iPhone 5s.
Soft reset
This is a uni-body device with an internal battery that cannot be removed. If you need to remove and re-insert the battery to soft reset the device, follow these steps:
If you need to remove and re-insert the battery to reset the device, press and hold both the Sleep/Wake and Home buttons for at least 10 seconds, until you see the Apple logo.