Recently many users have reported that their Samsung Galaxy Z Flip 4 keeps on rebooting after installing the update. Users facing this issue reported that their devices frequently restarted without any reason. This issue is generally faced when the update you installed is corrupted or when your device unexpectedly restarts during the update.

Fix Samsung Galaxy Z Flip 4 Keeps Rebooting After An Update

So what to do to fix this issue? Well, there are various troubleshooting steps that you can follow to fix Samsung Galaxy Z Flip 4 won’t restart, and we will be discussing them in this article ahead.

Fix Samsung Galaxy Z Flip 4 Keeps Rebooting After An Update

Charge Your Phone

You may encounter an issue on your device due to discharged battery. If your device’s battery is low, you will likely encounter this issue. To avoid this situation, try charging your phone completely. Wait till the battery percentage reaches 100, and then try using the phone. You should now no longer face the issue.

Update Device

If you are facing this issue after installing an update, then possibly that update may be corrupted or not properly installed on your device. You should install updates on your phone and then check if that fixes the issue or not-

  • Open the Settings app on your Samsung Device. 
  • Here, scroll down and tap on Software Update. 

Fix Samsung Galaxy Z Flip 4 Keeps Rebooting After An Update

  • Now, tap on Download & Install

Fix Samsung Galaxy Z Flip 4 Keeps Rebooting After An Update

  • This will scan for the available updates and install them on your phone. 

Check For Problematic App

Another thing that you can try doing is checking your device for the problematic app. To check if the issue is caused due to third-party apps, you first have to boot your phone into safe mode. When in safe mode, your device will only run pre-installed apps, not the third-party apps you have installed. 

If you are not facing this issue after booting into safe mode, then probably the issue was caused due to third-party apps. To boot your phone into safe mode, follow the steps given below-

  • Press and hold the Power + Volume Down button until you see the Power Off menu on your screen. 
  • Now, tap and hold the Power Off until you see Safe Mode. 
  • Tap on Safe Mode to boot your device into safe mode. 
  • Now, in safe mode, check if your phone reboots randomly or not.
  • If you are not facing the problem in safe mode, then the issue is because of the third-party apps.
  • Once you are done checking your phone, restart it normally.

You should move to the next step if the issue is not due to third-party apps. However, if the issue is due to third-party apps, you will have to manually uninstall them and then check which app is causing the issue. To uninstall the apps, follow the steps given below-

  • In the App Drawer, tap and hold the app and then tap on Uninstall.
  • Confirm uninstalling the app, and the app will be removed from your device.

Perform Hardware Test

Samsung phones have an app called Samsung Members, which is exclusively for Samsung Community. This is a community forum for Samsung users. This app has a feature called hardware test, which allows you to check for faulty hardware on your device. You can run this hardware test to check whether the issue due to faulty hardware or not.

To run the hardware test, follow the steps given below-

  • Open the Samsung Members app on your phone.
  • Head to the Support tab from the bottom right corner.
  • Now, tap on View Tests.

View Tests

  • Tap on Test All to run all the tests available for your device.

Test All

Follow the instructions given here properly to run the hardware test. This will tell you whether or not the issue is due to hardware.

Wipe Cache Partition

Many times, a corrupted system cache can also be the reason behind facing this issue. You can wipe the cache partition of the device if corrupted cached data is the reason behind this issue. To do so, follow the steps given below-

  • Press and hold the Power key and tap on the Power Off option to turn off your device.
  • Now press and hold the Volume Up + Power button together until you see the Android logo. After the Android logo appears on the screen, release the buttons.
  • Now from the list of options that appear, navigate to the Wipe Cache Partition. You can navigate the menu using the Volume keys.
  • To select the option, press the Power button once the option has been highlighted.
  • Confirm wiping the cache partition of your device.
  • Once done, restart your device, and the issue should no longer be encountered.

Perform Factory Reset

If your Samsung Galaxy Z Flip 4 keeps rebooting after an update, you are left with no option other than factory resetting your device. This will remove all your files, apps, settings, and contacts on your phone, so you must have a backup of them on another device before you continue ahead.

To perform a factory reset, follow the steps given below-

  • Open the Settings app on your phone.
  • Here, tap on the General Management option.
  • Now tap on Reset and then on Factory Data Reset.

Factory Data Reset

  • Tap on Reset at the bottom of the page to reset your phone.

Visit Service Center

If you still encounter the same issue, we recommend you visit the Samsung service center. If your unit is faulty or there are any other issues, they will analyze it and fix it.

Final Words

Though facing such issues is not common, some users have reported that their Samsung Galaxy Z Flip 4 keeps rebooting after an update. This generally happens when the update is not correctly installed. If you are facing this issue, you can follow the steps above in this article to fix it.


Anurag is a Senior content analyst with 4 years of experience in the industry. Based in India, He is extremely skilled at Windows related to How to Troubleshooting matters. His favorite topics are Windows 11, Android, and How To's.


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