How to Fix Galaxy S25 Restarting Randomly After Update

Galaxy S25 Restarting Randomly After Update usually means system cache was corrupted, one app is crashing the system, or the new build introduced instability under load.

Method 1: Restart in Safe Mode

Safe Mode helps show whether a third-party app is triggering the reboots.

Boot the Galaxy S25 into Safe Mode.
Use it for a while without opening extra apps.
If the random restarts stop, uninstall recently updated apps.

Method 2: Check storage and free space

Low free storage can cause update cleanup to fail and make the phone unstable.

Open Settings > Battery and device care > Storage.
Free up space if storage is nearly full.
Restart the phone and monitor it again.

Method 3: Wipe the cache partition

Corrupted system cache after an update is a common cause of reboot loops and random restarts.

Turn the phone off.
Boot into recovery mode using the correct hardware combination.
Choose Wipe cache partition, then reboot.

Method 4: Check battery and overheating behavior

If the phone restarts when hot or under load, thermal throttling or a bad battery process may be involved.

Remove the case and avoid charging while testing.
Check whether reboots happen during gaming, camera use, or mobile data use.
Install app updates from Play Store and Galaxy Store.

Method 5: Reset all settings

This can clear a broken system configuration without deleting personal files.

Open Settings > General management > Reset.
Tap Reset all settings.
Restart the phone and test again.

Method 6: Install the newest patch or factory reset

If the random restarts began immediately after one update, the next patch may fix it. If not, a factory reset may be needed.

Open Settings > Software update > Download and install.
Install any newer build available.
If the issue continues, back up your data and do a factory reset.

If the problem continues after all of the steps above, visit the main Galaxy S25 page for more troubleshooting guides.