What to do if your Samsung Galaxy S9 is running slow after Pie update

Some owners of the Samsung Galaxy S9 have been complaining because their devices reportedly started running slow after the recent Android 9 Pie update. Apparently though, this is just one of those minor firmware issues that you can fix on your own without having to take that trip to the store or shop. This kind of problem isn’t really that serious and you don’t have to worry so much about your phone. 

In this post, I will walk you through in troubleshooting your Galaxy S9 that keeps running slow after being updated. We will look into each possibility and rule them out one by one until we can determine what the problem is and fix it. So, if you’re one of the owners of this device and are currently being bugged down by a similar problem, continue reading as this article may be able to help you one way or another. 

Before we move on to our troubleshooting, if you happen to find this post while looking for a solution to a different problem, then visit our Galaxy S9 Help Guides page for we have already addressed some of the most common issues with this device. We may have already published articles that could help you fix your problem. Find issues that are similar with yours and feel free to use our solutions.

Troubleshooting Galaxy S9 that’s running slow after Pie update

In troubleshooting a smartphone that has a firmware issue, it’s best to be thorough and be careful at the same time so that you won’t lose any important files or data. That said, we need to follow a systematic method to rule out every possibility. Here’s what you need to do…

First solution: Run your phone in safe mode

Running your Galaxy S9 in safe mode will temporarily disable all third-party applications. It is important that you do this first so that you would know if the cause of the problem is a third-party app or not. If what makes your phone run slow is one of the apps you downloaded and installed, then you should know by now that removing it would mean making your phone work perfectly again. And if that’s really the case with your phone, then you can fix this problem easily without having to change any settings in your device. Follow these steps to run your Galaxy S9 in safe mode: 

  1. Press and hold the Power key until options show. 
  2. Tap and hold the Power off option until it changes into Safe Mode. 
  3. Tap the Safe mode icon to restart your device.
  4. Once the reboot is successful, you should see ‘Safe mode’ at the lower-left corner of the screen. 

So assuming that your phone isn’t running slow while in safe mode, then it confirms our suspicion that the problem is triggered by a third-party app. Follow these steps to fix the problem. 

  1. Restart your phone normal to boot into standard mode. 
  2. Remember the apps you installed about the time when the phone starts to run slow. 
  3. Once you already have an app in mind, swipe down from the top of the screen to pull the notification panel down. 
  4. Tap the Settings icon on the upper-right corner. 
  5. Scroll to and then tap Apps. 
  6. Find and tap suspected app. 
  7. Tap Storage. 
  8. Touch Clear data and tap OK to confirm.
  9. Tap the back key once and then touch Uninstall. 
  10. Confirm that you want to remove the app from your phone. 

On the other hand, if your phone is still running slow even in safe mode, then move on to the next solution. 

ALSO READ: Samsung Galaxy S9 won’t boot up successfully after Android Pie

Second solution: Reset all settings

There are times when some settings get changed and may cause some problems in the system. Most of the time, we don’t know which setting it is and so the best thing you can do about it is bring all settings back to their default values and that’s when this procedure comes in. Here’s how it’s done on your Galaxy S9: 

  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 settings. 
  6. Tap the Reset settings button. 
  7. If prompted, enter your PIN, Password or Pattern. 
  8. Finally, tap Reset.

After this, try to see if your phone is still running slow because if it still does, then it’s time to troubleshoot the firmware itself. 

Third solution: Wipe cache partition to fix phone that’s running slow

The first step in troubleshooting the firmware is to delete the old system cache so that it will be refreshed with a new one. If it’s just a minor problem with the firmware, then this procedure will be able to fix it. The good thing about wiping the cache partition is that it’s very effective against firmware problems but you don’t have to go through all the hassle of creating a backup of your important files and data as they won’t be touched in any way. So, follow these steps and see if your phone that’s running slow works perfectly again:

  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 S9 logo shows, release all three keys.
  4. Your Galaxy S9 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 the phone has successfully rebooted, observe closely to know if it’s still running slow or sluggish. If it still does, then move on to the next solution.

ALSO READ: How to unfreeze a frozen Samsung Galaxy S9

Fourth solution: Backup all your files and data and reset your device

At this point, a master reset is necessary. As long as the firmware hasn’t been modified in any way, a hard reset will be able to fix this problem. However, you have to create a copy of your important files and data as any personal information that’s saved in your phone’s internal storage will be deleted once you’ve done doing this procedure. After the backup, remove your Google and Samsung accounts so that you won’t be locked out after the reset. Once you’ve done all that, then follow these steps to reset your phone: 

  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 S9 logo shows, release all three keys.
  4. Your Galaxy S9 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.
  10. Press the Power key to restart the device.

I hope that we’ve been able to help you fix your Samsung Galaxy S9 that’s running slow after the Android 9 Pie update. 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!

ALSO READ: Samsung Galaxy S9 keeps showing “Gmail has stopped” error

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