Samsung phone keeps turning off? 9 fixes that work
A Galaxy that shuts off at random is often telling you its battery is worn, or that an app or case is to blame.
The fix
9 fixes, in order
- 1
Remove the case.
A tight case can hold the side key down.
- 2
Let the phone cool down if it is hot.
- 3
Check the battery.
Samsung Members › Support › Phone diagnostics › Battery status.
- 4
Charge with a Samsung or good quality cable and adapter.
- 5
Update the software.
Settings › Software update › Download and install.
- 6
Check scheduled power off.
Settings › Device care, then look for Auto restart or scheduled power settings and turn them off.
- 7
Test in safe mode.
Hold the side key, then touch and hold Power off until Safe mode shows.
- 8
Uninstall apps added just before the problem started.
- 9
Back up and factory reset.
Frequently asked questions
Why does my Samsung turn off at 20 percent?
A worn battery cannot deliver enough power under load, so the phone shuts down early. Check the battery in Samsung Members and replace it if it is weak.
Why does it turn off when I open the camera?
The camera and flash draw a lot of power at once. A weak battery gives up at that moment. It is a strong sign the battery needs replacing.
Related guides
Android battery draining fast
Android battery draining fast? Find the app to blame in Battery usage, limit background apps, fix weak signal drain, lower the refresh rate and more.
Android black screen
Android phone black screen but it still rings or vibrates? Charge it, force restart it, raise the brightness and try safe mode before blaming the screen.