Samsung (OneUI 4.0) Galaxy S21 Gallery Keeps Stopping? Here are the solutions!

This post highlights potential solutions to a problematic Gallery app on the Galaxy S21 device. Read on to learn what to do if the Samsung Galaxy S21 Gallery keeps stopping in the updated One UI platform.

Why does the One UI Gallery App keep stopping?

Random and frequent app crashes in mobile devices are often due to memory problems like when the device storage is running low. Aside from low memory, similar app behavior can also be triggered by other software-related factors including data corruption, software bugs and malware. 

In some cases, an app would crash from a recent update, especially when the update caused major system revamp. The same thing could happen if the recent update contains unexpected bugs that result in stock apps going rogue.

Corrupted data from a mounted SD card (in smartphones with SD card support) can also trigger occurrence of relevant symptoms. 

In the case where the crashing issue only affects online applications, internet problems are likely the underlying cause. 

If the crashing issue already affects the entire system functions like when the device itself keeps crashing, then it’s likely due to a fatal system error, if not hardware damage.

The methods outlined below are deemed potential solutions to the Galaxy S21 Gallery app that keeps crashing in One UI 4.0. You can try any of these methods should you need some input in dealing with the same issue on your Samsung Galaxy device.

Troubleshooting Galaxy S21 Gallery keeps stopping issue in OneUI 4.0

The following solutions are also applicable when troubleshooting the same problem with the built-in Gallery app on other Samsung Galaxy phones running on the latest One UI version.

Actual user interface may vary between device models and wireless service providers.


  • Before you begin troubleshooting, check and ensure that your phone is connected to the internet and that the internet connection is stable. This is imperative to rule out internet-related factors from the underlying causes.
  • Also care to check the current storage or memory status of your device. As mentioned earlier, insufficient or low storage is often the main reason why many devices succumb to random and frequent app crashes. Ideally, the phone must have at least 3 gigabytes of available storage in order for it to work properly. Otherwise, deleting old and unwanted contents would be necessary.
  • Finally, make sure all your apps are updated. Sometimes, built-in apps would end up misbehaving due to some conflicts with other outdated third-party apps. If necessary, manually check for, download and install any pending app updates on the Play Store.

The first methods will help eliminate software-related factors that likely trigger the Gallery app to stop working unexpectedly. Feel free to start whenever you’re all set to troubleshoot your device.

Solution #1: Force Stop Gallery & other background apps

If this is the first time that the Gallery app has stopped working, then it’s likely just a random glitch inflicted by other background apps and services. And the easiest way to rectify such errors is to force stop the Gallery and other Android apps that are left open or running in the background.

Here’s how to get this done on the Galaxy S21’s updated One UI platform.

  • From the Home screen, tap the Recent Apps key to view all apps that are still running in the background. 
  • To end or force all background apps to quit, tap Close All.

After forcing background apps to end, relaunch the Gallery app and see if the error is gone.

Solution #2: Force restart your Galaxy S21

Another simple and very effective solution to random software issues including stopping apps is a forced restart. It works the same as the usual reboot (soft reset) but carried out using the hardware keys. 

For starters, here’s how to force restart the Galaxy S21 device:
  • Simultaneously press and hold the Volume Down button and the Side/Power key for about 10 seconds seconds.
  • Release both buttons when the Samsung logo appears and then wait for the device to finish the boot sequence.

A forced restart doesn’t affect any user data including downloaded apps and other added contents that are saved in the phone’s internal storage. 

All it eliminates are random software errors including minor glitches that trigger a certain app to misbehave.

Solution #3: Clear Gallery app cache and data

Every time you open an app, temporary files and residual data are being collected. These data are stored as cached in the app’s storage. While keeping these cached files can benefit in terms of reloading of the same information when using the application, unexpected errors and in-app glitches may arise when any of these temporary files gets ruined or corrupted. 

To clear out any corrupt residual data from the Gallery app, you can execute the built-in Clear Cache and Clear Data commands from the app menu. Here’s how:

  • Tap the Settings icon from the Home screen to launch the Settings app menu.
  • From the Settings menu, tap Apps and then select Gallery from the following apps list.
  • On the Gallery App info screen, tap Storage.
  • Tap Clear cache at the bottom to clear cache from the app.
  • Or, tap Clear data if you want to delete all residual data accumulated when using the application.

Please note that clearing the app’s data will delete all data associated with that app. As a result, the app will behave like when it was freshly installed. This also denotes the need for you to set necessary permissions, notification settings, and preferences for that app.

Solution #4: Wipe cache partition (clear system cache)

If clearing the app cache and data doesn’t solve the problem, then clearing the system cache can be deemed as the next option. As the name implies, this will delete all temporary files that are stored as cache in the system memory including corrupted data fragments that caused conflicts to the Gallery application.

To get this done, you will need to execute the built-in Android command called Wipe cache partition from the Android recovery mode.

Just follow these steps if you need help in the process:
  • First, turn off the phone completely.
  • Press and hold the Volume Up key and the Side/Power key.
  • When the Android/Samsung logo appears, release both the Volume Up key and Side/Power key.
  • You will see the ‘Installing system update’ message appearing briefly before the Android Recovery menu options shows up.
  • Press the Volume down key several times to highlight the Wipe cache partition option.
  • Once the wipe cache partition option is highlighted, press the Side/Power key to select.
  • Press the Volume down key to highlight Yes, then press the Side/Power key to select.
  • When the process is complete, the Reboot system now option is highlighted.
  • Press the Side/Power key to restart the phone.

Wait for the phone to finish the boot sequence and once it’s up, you should notice that it’s already working smoother, faster and stable. All accumulated cached files in the system storage are likewise deleted.

Wiping the cache partition is also among other potential solutions to performance-related issues including system lags, random freezes, apps crashing, and unexpected reboots.

Solution #5: Reset app preferences

Some in-app glitches can likewise be rectified by resetting the app preferences. This reset works by restoring default preferences for disabled apps, app notifications, background data restrictions for apps, and other app permission restrictions.

It doesn’t affect any saved data from the internal storage so you won’t lose any important content. App data is also not affected.

Just follow these steps if you need help carrying out this reset on your Galaxy S21:

  • Open the settings app by tapping on the Settings icon from the Home or Apps screen.
  • While on the Settings menu, scroll to find and then tap Apps. A list of apps will load up next.
  • To continue, tap the triple-dot icon on the top-rightmost corner of the apps screen.
  • Then select Reset app preferences from the menu options.
  • On the pop-up screen, read and review the reset details and then tap Reset to confirm.

After resetting app preferences, you will need to manually set default apps to process certain files and data protocols like the first time.

Solution #6: Reset all settings

Another type of reset you can perform if the prior methods failed is the so-called reset all settings. This reset is usually recommended before performing a factory data reset because it doesn’t delete any user data.

This reset basically works by discarding any phone customization including custom networks, app settings and preferences, and other personal configurations without deleting any saved contents.

Here’s how it’s done:

  • From the Home screen, tap Settings.
  • Next, tap General management.
  • Scroll down and then tap Reset.
  • Select the option to Reset all settings.
  • Read the reset details and then tap Reset settings to proceed.
  • Enter your device PIN, pattern or password and then tap the Reset settings button on the pop-up menu to confirm.

After the reset, automatic system reboot instigates. Just allow your device to finish rebooting and once it is up, all default apps and original settings are restored.

This means the need for you to re-enable necessary apps individually so you can use them again.

Is the Gallery App still stopping?

If you’ve got an SD card mounted in your phone, try to unmount the SD card and then mount it again. This is often required if the problem is due to corrupted SD card data. The same thing when the SD card itself gets corrupted.

If unmounting and remounting the SD card doesn’t fix the problem, then resorting to more advanced system resets can be regarded among the last resorts. This is when performing a factory data reset (master reset) to restore everything in the system to its factory state is needed.

Should you wish to proceed, be sure to back up all important files from the phone to your cloud account or external storage media. This is highly recommended given that performing a factory reset or master reset deletes everything from the system including downloaded apps and saved contents.

Hope this helps!

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