How to fix Google Play Store error 921 on Samsung Galaxy S10

The Google Play Store error 921 on Samsung Galaxy S10 occurs when you’re downloading or installing an app. While this is a very annoying problem, it’s not really that difficult to fix because most of the time it’s just a minor issue with the Play Store. It’s not a device- or app-specific problem so if you own any Android smartphone, you may be able to encounter this error from time to time. 

In this post, I will walk you through in troubleshooting your Galaxy S10 that keeps showing the error 921. We will consider every possibility and rule them out one by one until we can get the problem figured out and hopefully fix it. So, if you’re one of the owners of this device and are currently being bugged by a similar issue, continue reading as this article may be able to help you.

Before going further, if you found this post because you were trying to find a solution to your problem, then try to visit our troubleshooting page as we’ve already addressed most of the commonly reported issues with the phone. We’ve already provided solutions to some of the problems reported by our readers so try to find issues that are similar with yours and use the solutions we suggested. If they don’t work for you and if you need further assistance, fill up our Android issues questionnaire and hit submit.

Troubleshooting Play Store error 921 on Samsung Galaxy S10

The main purpose of doing these troubleshooting procedures is to figure it out the real issue is and fix it without bringing your device to the tech. In this post, we have to be thorough in troubleshooting your phone and with that being said, follow these steps to fix your phone with error 921…

First Solution: Perform a Forced Restart 

Doing a soft reset will refresh your phone’s memory and reload all apps and services. This method is so effective especially if your device is experiencing firmware-related issues. If this problem is just due to a minor glitch with the system, then this procedure will be able to fix it. Here’s how you do that…

  1. Press and hold the Volume Down button and don’t release it yet.
  2. While holding down the volume button, press and hold the Power key as well.
  3. Keep both keys held down together for 15 seconds or until the Galaxy S10 logo shows on the screen.

When the device is set and ready, open the Play Store app and see if the error 921 will show up. If it does, proceed to the next method.

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Second Solution: Delete Play Store Cache and Data

Issue like this sometimes occur if the Play Store cache and data are corrupt or outdated. So, this time, we will try to delete those files so that they will be replaced with newer ones. Needless to say, we need to reset the Play Store by following these steps:

  1. Swipe down from the top of the screen to pull the notification panel down.
  2. Tap the Settings icon on the upper-right corner.
  3. Scroll to and then tap Apps.
  4. Find and tap Google Play Store.
  5. Tap Storage.
  6. Touch Clear cache.
  7. Touch Clear data and then tap OK to confirm.
  8. After the Play Store reset, restart your phone to refresh the memory.

If it’s just an issue with the app, then resetting it will fix the problem. So, once your phone has successfully restarted, open Play Store and see if the error 921 still pops up. If it still does, then move on to the next solution. 

Third Solution: Reset Network Settings

When you have to update or install an app it is imperative that your internet connection is stable. Having an interruption during the updating and installation may sometimes affect the process that result in errors, including the error 921. The next thing we have to do is to reset the network settings of your phone to make sure it has a stable internet connection and here’ show you do that…

  1. Swipe down from the top of the screen to pull the notification panel down.
  2. Tap the Settings icon on the upper-right corner.
  3. Scroll to and tap General management.
  4. Touch Reset.
  5. Tap Reset network settings.
  6. Tap Reset settings.
  7. If prompted, enter your PIN, Password or Pattern.
  8. Finally, tap Reset.

Once the phone is ready for use, open Play Store and see if the error 921 still pops up. If it continues to bug you, then it’s time to troubleshoot the firmware. 

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Fourth solution: Wipe cache partition

Wiping the cache partition will delete the old system cache and replace it with a new one. It’s important that you do this procedure because it might save you from the trouble of backing up all your files and data. It’s a very effective solution against minor firmware issues such as errors and performance problems. Here’s how it’s done: 

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Galaxy S10 logo shows, release all three keys.
  4. Your Galaxy S10 will continue to boot up into the Recovery Mode. Once you see a black screen with blue and yellow texts, proceed to the next step. 
  5. Press the Volume down key several times to highlight wipe cache partition.
  6. Press Power key to select.
  7. Press the Volume down key to highlight yes, them and press the Power key to select.
  8. When the wipe cache partition is complete, Reboot system now is highlighted.
  9. Press the Power key to restart the device.

Once your Galaxy S10 has rebooted successfully, launch the Play Store to see if the error 921 still pops up. If it still does when you download or install and app, then move on to the next procedure. 

Fourth Solution: Perform Factory Reset

If all procedures you performed hasn’t fixed the problem, then your last chance to get rid this issue is by doing a reset on your phone. It is possible that your Galaxy S10 is experiencing a serious firmware-related issue that you don’t know about. Performing a reset is very effective especially in dealing with this type of problem because it will bring your device back to its factory default. But before you reset your phone, make sure to create a copy of your important files and data as they will be deleted. You may transfer them to your SD card or upload them to the cloud. 

When you’re done backing up your files, don’t forget to remove your Google and Samsung account so that you won’t be locked out of your device after the reset. 

Follow these steps to reset your Samsung Galaxy S10:

  1. Turn off the device.
  2. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  3. When the Galaxy S10 logo shows, release all three keys.
  4. Your Galaxy S10 will continue to boot up into the Recovery Mode. Once you see a black screen with blue and yellow texts, proceed to the next step.
  5. Press the Volume down key several times to highlight ‘wipe data / factory reset’.
  6. Press Power button to select.
  7. Press the Volume down key until ‘Yes’ is highlighted.
  8. Press Power button to select and start the master reset.
  9. When the master reset is complete, ‘Reboot system now’ is highlighted.

I hope that we’ve been able to help you fix your Samsung Galaxy S10 with Google Play Store error 921. We would appreciate it if you helped us spread the word so please share this post if you found it helpful. Thank you so much for reading!

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