If your Samsung Galaxy S26 Ultra keeps restarting on its own after an update, you are not alone. This issue often appears right after installing a major software update, especially on devices running One UI 8.5, and it can interrupt calls, apps, and daily use. The problem is usually caused by temporary system conflicts, app issues, or corrupted cache files, and in most cases, you can fix it without professional help.
Why Your Samsung Galaxy S26 Ultra Keeps Restarting After an Update
- System cache may be corrupted after installing the update.
- Some apps are not yet optimized for the new software version.
- Background services may be crashing repeatedly.
- Software bugs introduced during the update process.
- Overheating or battery-related instability.
1. Restart Your Phone
A simple restart can stabilize system processes after an update. It clears temporary glitches and helps your phone reload all services properly.
Swipe down from the top right to open Quick Settings.
Tap the Power icon, and then tap Restart.
Wait for the device to fully reboot, and observe if the random restarts continue.
2. Check for App Updates
Outdated apps can conflict with the new system version. Updating them ensures compatibility and reduces crashes that may trigger restarts.
Open the Play Store, and then tap your profile icon.
Tap Manage apps and device, and then tap Update all.
Wait for all apps to finish updating before using your phone again.
3. Boot into Safe Mode
Safe Mode helps you identify if a third-party app is causing the issue. If the phone stops restarting in this mode, then one of your installed apps is likely the problem.
Swipe down from the top right, and then tap the Power icon.
Press and hold Power off, and then tap Safe mode.
Use your phone for a while and check if the issue still occurs.
4. Clear System Cache
After an update, leftover cache files can become incompatible. Clearing them allows the system to rebuild fresh cache, which improves stability.
Turn off your phone, and then press and hold the Side button and Volume Up key.
Release both buttons when the Samsung logo appears, and then navigate using the volume keys.
Select Wipe cache partition, and then confirm using the Side button.
5. Check for Software Updates
Sometimes, Samsung releases a quick patch after a major update to fix bugs. Installing the latest update can resolve restart issues immediately.
Open Settings, and then tap Software update.
Tap Download and install, and then wait for the phone to check for updates.
Install any available update and restart your device.
6. Reset All Settings
If the issue persists, some system settings may be causing instability. Resetting all settings restores defaults without deleting your personal data.
Open Settings, and then tap General management.
Tap Reset, and then tap Reset all settings.
Confirm the reset and wait for your phone to reboot.
Random restarts after an update can feel serious, but they are usually caused by temporary software conflicts. Once you update your apps, clear the cache, and refresh system settings, your Samsung Galaxy S26 Ultra should return to stable performance.
FAQs
Why did my Galaxy S26 Ultra start restarting after an update?
Major updates change core system files. Some apps or cached data may not work properly with the new version, which can cause instability and restarts.
How do I know if an app is causing the problem?
Booting into Safe Mode disables third-party apps. If the restarts stop, then one of your installed apps is likely responsible.
Will a factory reset fix random restarts?
Yes, but it should be your last option. A factory reset removes all data and restores the phone to its original state, which can fix deeper software issues.
