Samsung Galaxy Note 9 freezes and shuts down after Android 9 Pie update

A high-end smartphone like your Samsung Galaxy Note 9 that freezes and shuts down by itself without apparent reason could have a firmware problem. Some owners have been complaining about the problem that reportedly started after the Android 9 Pie update that many have been anticipating.

The freezing issue has always been different from the random shutdowns but if the two come together, it’s probably a serious problem. Some users said that their phone freezes while they’re it and after a few seconds, it would just power itself down. While the phone powers on just fine after the problem, it is still very annoying as it occurs without warning regardless of what you’re doing.

In this post, I will walk you through in troubleshooting your Galaxy Note 9 that freezes and shuts down after the Pie update. We will consider every 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 having the same issue, continue reading as this post may be able to help you.

Before we move on to our tutorial, if you happen to find this post while looking for a solution to a different problem, then visit our Galaxy Note 9 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.

Fixing Galaxy Note 9 the freezes and shuts down after the Pie update

As long as your Galaxy Note 9 doesn’t have any signs of physical damage, all of this could be just a problem with the firmware and if that’s the case, then you can fix it on your own without any help from a technician. This troubleshooting guide could save you a trip to the store or shop. But we need to be thorough, so here are the things you need to do about this problem:

First solution: Observe your phone in Safe mode

The first thing we have to do is isolate the problem by running the phone in safe mode to temporarily disable all third-party applications. It’s possible that one or some of your applications is causing the phone to free and shut down. I encountered several apps in the past that are capable of causing this havoc. The best way to know if this is the case with your phone is to run it in safe mode. Here’s how you do it:

  1. Press and hold the power key until the power options show on the screen.
  2. Tap and hold the Power off option until Safe mode option shows.
  3. Tap Safe mode to restart your phone.
  4. When your Note 9 boots up, you should see the text Safe mode on the lower-left corner of the screen.

While in this mode, continue using your phone to know if it still freezes and shuts down by itself. If it doesn’t do that anymore, then it means that the problem is caused by one or some of your downloaded apps. The next thing you have to do is find the app that’s causing the problem.

If you were able to use your phone normally after the Android Pie update before this problem started, then go after the apps you installed about the time this issue first occurred. If you don’t have much data, you may uninstall suspected app immediately. Or, you may take a little time backing up your data and then uninstall the app.

However, if the problem started shortly after the Android Pie installation has finished, then there could be some apps that need to be updated. Open Play Store and go to My apps & games and then you can see which app needs updating. Update every single app on the list. After which, reboot your phone in normal mode and continue your observation to know if it still freezes or shuts down by itself.

ALSO READ: Samsung Galaxy Note 9 slowed down after updating to Android 9.0 Pie

Second solution: Delete the system cache so it will be replaced

During major firmware updates, the system cache may be corrupted or become obsolete and as a result, problems will occur when the system continues to use it. You have to delete the old system cache after the update so that the firmware will create a new one. It is also recommended to delete the cache every now and then. Don’t worry, it won’t delete any of your files or data. 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 Android logo displays, release all three buttons.
  4. Once you see a black screen with blue and yellow texts, the phone is in recovery mode.
  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.

It will take a little more time for your phone to boot up successfully after wiping the cache partition. So, wait until it boots up successfully and then continue using it like you always do. If it still freezes and shuts down after this, then it’s time to go after the settings.

Third solution: Reset the Settings of your Note 9

It is also possible that some settings have been messed up after the update. Most of the time, we don’t know which setting has to be corrected so the best way to rule this possibility out is to reset the settings back to normal. There’s an option in your device that allows you do this without compromising your files and data.

  1. Swipe down from the top of the screen to pull the notification panel down.
  2. Tap Settings and navigate: General Management > Reset > Reset settings.
  3. Tap RESET SETTINGS.
  4. If prompted, enter your PIN, Password or Pattern.
  5. Tap RESET SETTINGS.
  6. The device will restart to perform the reset of settings.

If your Galaxy Note 9 still freezes and shuts down after this procedure, then you have no other choice but to reset your phone.

ALSO READ: What to do if your Samsung Galaxy Note 9 keeps showing ‘Moisture Detected’ error?

Fourth solution: Backup your files and Master Reset your device

At this point, a master reset is necessary and if it’s just an issue with the firmware, this procedure should make your phone work perfectly again. We often suggest this procedure after exhausting all possible solutions as you may end up losing some of your important files and data. Since you don’t have much of a choice right now, create a backup of your files and data as they will be deleted during the process. Then, remove both your Google and Samsung accounts so that you won’t be locked out. After which, 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 Android logo displays, release all three buttons.
  4. Once you see a black screen with blue and yellow texts, the phone is in recovery mode.
  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 — delete all user data’ 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.

If your phone still freezes and shuts down after this, then it’s more than just a minor firmware issue. It’s possible that the firmware has to be reinstalled to fix this problem. In this case, you need to bring your phone to the store or shop so that a technician can check it for you.

I hope that we’ve been able to help you fix your Note 9 that freezes and shuts down by itself. 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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