Shakthi2021
Active Level 1
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Galaxy S
Am I the only one getting an annoying pop up saying system ui stopped working whenever there is an incoming call...i tried clearing the cache memory as well but still it keeps coming up...any solution to fix this?? 
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sudhANSHuX_X
Expert Level 5
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Galaxy S
Fortunately, the issue can be easily fixed by updating some important apps andhe changing a setting inside Developer options.
1. Restart Your DEVICE
Before you try other solutions, restart your phone. Hopefully, the System UI has stopped error will no longer come back.

2. REMOVE WIDGETS

The solution may sound silly, removing the widgets from the home screen has helped fix the System UI issue. I estimate that it could be some incompatible widget. So take a look at your home screen and remove widgets like Google Search, Spotify, etc. After removing them, restart your phone. If the issue is fixed, you can add the widgets back on your screen.


3. UNINSTALL UPDATES

Uninstalling updates for the Google app has also helped many users. Since it is a pre-installed app, it cannot be removed from the phone completely. You can only restore the app to the factory version, which is enough for fixing the issue.

Method 1: Uninstall Google App From Play Store

Launch Google Play Store and search for the Google app. Tap on the Google app. Then tap on Uninstall.

Method 2: Uninstall Google App From Settings

Step 1: Go to Settings followed by Apps or Apps & notifications.
Step 2: Tap on Google.
Step 3: Tap on the three-dot icon at the top and select Uninstall updates.
Step 4: Restart your phone.

4. UPDATE APPS

You should keep your apps updated. While system apps such as Google Play Services and Play Store will update automatically in the background, at times, there is an issue with their updates. Either the current update has a bug or the update has failed, thus causing issues like System UI failure. To fix it, you will need to update Google Play Store and Play Services manually.You should also update the Google app from Play Store.

5. CLEAR CACHE

Next, you need to clear cache and data for a handful of apps such as Google, System UI, Play Store, and Play Services, Clearing cache will not delete any of your personal files or data. On the other hand, clearing data will delete the app settings for these apps and restore them to the factory version. Your apps will not be uninstalled.

To clear cache and data, follow these steps:

Step 1: Open Settings and go to Apps or Apps & notification or System apps.
Step 2: Tap on the three-dot icon at the top and select Show system apps. If you don’t see the three-dot icon, go to All apps. Then tap the three-dot icon.
Step 3: Now, under System apps, look for System UI. Tap on it.
Step 4: Tap on Storage followed by Clear cache. Restart phone. If the issue persists, tap on Clear data or Clear storage depending on the option available on your handset.
Step 5: Repeat the steps for the Google app, Google Play Store, and Google Play Services.

6. CHANGE BACKGROUND PROCESS LIMIT

You should proceed with this step only if you've enabled Developer options on your phone. If not, then do that first. Then, here’s what you need to do.

Step 1: Launch Settings and go to Developer options. On some phones, you might find it inside Settings > System.
Step 2: Scroll down and tap on the Background process limit option.
Step 3: Select Standard limit. Restart your phone. See if the issue is fixed. If you still see the error, change the value to see what works for your phone
sudhANSHuX_X
Expert Level 5
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Galaxy S
7. You should also try resetting app preferences on your phone. Again, no personal data or files will be impacted by this. However, your settings such as permissions, data restrictions, default apps, etc., will be reset to the default values.

Here are the steps to reset app preferences:

Step 1: Open Settings and go to Apps.

Step 2: Tap on the three-dot icon at the top and choose Reset app preferences. Confirm on the next screen.

8. UPDATE PHONE’S SOFTWARE

Sometimes, the phone’s software can also be responsible for such errors due to compatibility issues. To fix it, you should check if an update is available for your phone. For that, go to Settings > System (or About) > System update.
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sudhANSHuX_X
Expert Level 5
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Galaxy S
Or try this first:

Clear cache/data of UI home and restart your device..
Shakthi2021
Active Level 1
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Galaxy S
thank you...I ll try out everything and see if its getting fixed...
sudhANSHuX_X
Expert Level 5
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Galaxy S
Sorry for writing so long.
But these are all the possible ways to fix the issue.

Try with the last one first. ie.

Clear cache/data of UI home and restart your device..

I hope your issue gets solved. 🙃
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Shakthi2021
Active Level 1
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Galaxy S
that's fine as long as it fixes the issue...the screen goes black when I get a call and when it comes up it pops up the error...its happening after the android 11 update...not sure what's wrong 😓
Ehsank
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Galaxy S
clearing cache means cache partition?
Shakthi2021
Active Level 1
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Galaxy S
yes that is correct...
Ehsank
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Galaxy S
ohk then try other 2 i have given below
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