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How to fix Samsung Galaxy S21 FE 5G crashing, freezing, random restarting and slowdown issues

When using the Samsung Galaxy S21 FE 5G, the smartphone may crash, freeze, randomly restart and/or slow down.

You can check out this troubleshooting guide to see how you can potentially resolve these issues.

1. The first step we recommend is to turn off your Samsung Galaxy S21 FE 5G.

The default way to do so is to press and hold the volume down key and side key at the same time.

If done correctly, you should bring up the Power menu, where you then need to select the “Power off” option.

2. Next, you should turn back on your phone and then use the optimize now feature.

To do so, open the Settings app from the home screen of your Galaxy S21 FE 5G and then select Battery and device care > Optimize now.

3. If you are still experiencing issues after using the optimize now feature, then you can then try clearing the memory of your Samsung Galaxy S21 FE 5G smartphone.

In order to do so, head over to the Settings app and then tap Battery and Device Care > Memory > Clear now.

4. Some apps running in the background could also be causing the freezing, random restarting and slowdowns with your Galaxy S21 FE.

To limit the background processes, go back to the front page of the Settings app and then tap Battery and Device Care > Battery > Background Usage Limits.

You can then select a background app that you want to limit.

5. Having multiple apps open at the same time may cause conflicts and use up a lot of hardware resources.

Therefore, we recommend only keeping only a few applications opened at the same time.

6. Furthermore, we recommended that you uninstall any apps that you don’t use often.

7. If the internal storage of the Samsung Galaxy S21 FE 5G gets too full, then it may lead to performance problems.

So, if your phone has a capacity of 128 GB, then we recommend you use around 100 GB just to be on the safe side. If you have a capacity of 256 GB, then you can try using around 200 GB.

To delete files, open the Settings app and then tap Battery and Device Care > Storage.

8. You should also try updating the apps that are still installed on your Samsung Galaxy S21 FE 5G as the new software versions may help fix the crashing, freezing, random restarting and slowdown issues.

To update all of your installed applications, go to the Google Play Store app and then your profile icon. Next, select Manage Apps & Device > Update All.

9. Of course, you should also try to update the firmware of your Galaxy S21 FE 5G as it may help resolve your problems.

To update, head back to the first page of the Settings app and then tap Software Update/System Updates > Check for Updates (or Continue Update if the previously update process was interrupted).

10. We also recommend checking to see if your smartphone feels very warm when touched.

If it feels too hot, then we recommend turning off your phone and then letting it cool down. Otherwise, your phone may eventually rise to a temperature range that will cause slowdowns, crashes and may force the device to shut down.

To find out more about how you can deal with overheating issues, you can take a look at this article.

10. Lastly, you may want to restoring your Samsung phone to its factory default, which will remove all the data from the device. This may help remove any apps and files that may have been causing these issues with the Galaxy S21 FE 5G.

To factory reset, you can take a look at this guide.