samsung galaxy note 9 black

Problems with the flickering screen may be due to a minor firmware problem or a severe hardware problem related to the screen. Some owners of the Samsung Galaxy Note 9 reported that shortly after the update of their Android phone 9.0 Pie even Samsung Galaxy S9 users reported it too, the screen began to flash. Assuming there are no signs of physical or water damage, this is probably due to a software problem.

In this article, therefore, I will guide you to solve the problems of your note 9 with a flickering screen problem. If you are one of the owners of this device and are currently experiencing an error related to a similar problem, read on, this article can help you in one way or another.

You can do the following if your Galaxy Note 9 has a flickering problem after updating Android Pie.

  1. Reboot your phone in safe mode and continue using it.
  2. Uninstall any third-party application that may be causing the problem.
  3. Clean the cache partition to remove and replace the previous system cache.
  4. Restart your phone.

You have already restarted your phone several times, but if you have not already done so, try to see if it improves the performance of your phone or if it eliminates flickering. Otherwise, try running your device in safe mode to disable all third-party applications temporarily. Third-party applications sometimes cause flickering of the screen, especially those applications that require intensive use of the processor and those that use a graphics processor.

Here’s how to reset your note 9 in safe mode:

  1. Turn off the device.
  2. Press and hold the Power key after the screen of the model name that appears on the screen.
  3. When SAMSUNG appears on the screen, release the power button.
  4. Immediately after releasing the power key, press and hold to decrease the volume.
  5. Press and hold the volume down button until the unit has rebooted.
  6. When the safe mode appears in the lower left corner of the screen, release the Volume Up key.

Assuming that the problem with the flickering of the screen does not occur in this mode, you should look for which of your applications is causing the problem and uninstall it. This should solve the problem.

However, if the problem persists even in safe mode, you must remove the previous system’s cache and replace it with a new one. You can do this by running your phone in recovery mode and clearing the cache partition. Android will automatically create a new cache for the new firmware. This is how you do it:

  1. Turn off the device.
  2. Press and hold Volume Up and Bixby, and then press and hold the Power key.
  3. When the Android logo appears, release all three buttons.
  4. A “System Update Installation” message appears for 30 to 60 seconds before the Android system recovery menu options are displayed.
  5. Press the key to lower the volume several times to highlight the deletion of the cache partition.
  6. Press the power button to select.
  7. Press the key to decrease the volume to highlight Yes and press the Home key to select.
  8. When the dalvik/cache partition cleaning is complete, Restart system now is highlighted.
  9. Press the power button to restart the device.

Your phone will take some time to rebuild the cache. Once activated, try to see if the flashing continues and, if so, make a backup of your files and data, and then restart the phone at the factory. At this point, it is necessary to exclude the possibility that this is a problem with the firmware. Then take the time to transfer your important files to your SD card, your computer or the cloud. Then, delete your Google account from your phone, then follow these steps to reset your device:

  1. Back up the data in internal memory. If you have logged in to a Samsung account on your device, you have activated Anti-Theft and will need your Samsung credentials to complete the master reset.
  2. Turn off the device.
  3. Press and hold Volume Up and Bixby, and then press and hold the Power key.
  4. When the green Android logo appears, release all keys (the “Install system update” option appears for about 30 to 60 seconds before the Android system recovery menu options are displayed).
  5. Press the volume up key repeatedly to highlight “erase data/reset
  6. Press the Power button to select.
  7. Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  8. Press the Power button to select and start the master reset.
  9. When the reset is complete, ‘Reboot system now’ is highlighted.
  10. Press the Power key to restart the device.

If the problem continues after the reset, bring your phone to the shop so the technician can check it for you.


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