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How to What to do if your Samsung Galaxy Note 9 has the screen flickering issue


The screen flickering issue can be just a minor problem caused by some apps or the firmware glitches. Some owners of the Samsung Galaxy Note 9 reported to have experienced this problem after they’ve updated their phones. If the problem started after an update, then you can always expect it to be firmware-related, although the possibility that it’s a hardware issue remains until it’s ruled out. 

In this troubleshooting guide, I will walk you through in fixing your Galaxy Note 9 with its screen flickering every now and then. We will try to look into all possibilities and then rule them out one after another until we can determine the cause of the problem. If you’re one of those owners that are currently having this issue, continue reading as this article may be able to help you. 

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 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 to yours and feel free to use our solutions.

How to fix Galaxy Note 9 with screen flickering issue

I have personally encountered this problem having been caused by an app, thus it’s possible that the screen flickering on your phone after the Android Pie update is just due to an app or two. I have included here a few procedures you can use. Try to see what works for you and what not…

First solution: Force restart your Galaxy Note 9

Always begin your troubleshooting with a reboot because while it’s a very simple procedure, it’s also very effective in dealing with problems that are not really that serious or complicated. A flickering screen might be a sign of one of those problems. However, instead of doing the normal reboot sequence, I suggest you do the Forced Reboot to simulate battery disconnect and refresh your phone’s memory. 

  • Press and hold the Volume Down button and the Power key together for 10 seconds or more.

Your Galaxy Note 9 will reboot like it usually does and if the flickering issue stops, then the problem wasn’t really that serious. There might have been some glitches in the system or some app may have caused it. But if it continues, then move on to the next procedure.

ALSO READ: Samsung Galaxy Note 9 keeps showing “Internet may not be available” error when on Wifi

Second solution: Reboot your phone in Safe mode

Rebooting your Galaxy Note 9 in Safe mode won’t fix the problem but it will tell you right off the bat if it’s caused by an app. When in this mode, all the third-party apps are temporarily disabled. So, if one of them is causing the problem, the flickering shouldn’t occur while the phone is in this mode.

  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 Plus logo shows on the screen.

Once the phone enters safe mode, continue to observe it to know if the flickering occurs from time to time or not because if the problem seems fixed, it means there’s an app that causes it. This is what you need to do next: 

  1. Restart your phone normal to boot into standard mode. 
  2. Remember the apps you installed about the time when the phone started to have the screen flickering issue. 
  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. 

However, if the flickering continues, then you should move on to the next procedure.

ALSO READ: How to fix Samsung Galaxy Note 9 that can no longer connect to a WiFi network?

Third solution: Delete the system cache to fix screen flickering

The Android system creates caches for all services, features and apps so there should be a cache for the service that handles the operation of the display and touchscreen. However, you don’t have access to those apps but you can delete them all at once. Once deleted, the system will recreate them during the first boot sequence after wiping the cache partition and all of it is done automatically so you don’t have to worry too much about it. So, to delete those files, follow these steps:

  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 Note 9 logo shows, release all three keys.
  4. Your Galaxy Note 9 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.

After this, try to see if the flickering continues because if so, there’s one more thing you should do before you actually bring the phone to the shop for a checkup.

Fourth solution: Perform the Master Reset

A reset will rule out the possibility that the screen flickering problem with your phone is due to a firmware issue that’s why it’s necessary to do this. Aside from that, all your personal information will be deleted so your privacy is protected. But bear in mind that all your files and data will also be deleted, especially ones that are stored in your phone’s internal storage, so make a backup of the files you don’t want to lose. After the backup, remove your google account from your phone so won’t get locked out after the reset. Once everything is set and ready, 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 Note 9 logo shows, release all three keys.
  4. Your Galaxy Note 9 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.

If the problem continues after this, bring your phone back to the store and have it checked.

I hope that this troubleshooting guide can help you one way or another. If you have other concerns you want to share with us, feel free to contact us or leave a comment below.

ALSO READ: How to fix Samsung Galaxy Note 9 that won’t send pictures through text?

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