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Samsung Galaxy Note 5 screen started flickering after the Android 7 Nougat update [Troubleshooting Guide]

A screen flickering issue may seem like a display- or hardware-related problem but in the case of some of Samsung Galaxy Note 5 owners, it appears like it’s more of firmware issue than anything else. Some of our readers who own this phone said that the problem started shortly after they’ve updated their devices to Android 7 Nougat.

Let’s try to take a look into this problem and we’ll have to rule out one possibility after another to be able to come to a conclusion on what really causes the screen to flicker every now and then. This kind of problem may happen to other devices as well so if you own a Note 5 or any other smartphone and are currently experiencing the same symptoms, continue reading below to know what to do.

But before we jump right into our troubleshooting, if you have other issues with your phone, make sure you drop by our troubleshooting page for we have already addressed a lot of issues with this device. Try to find problems that are similar with yours and use the solutions we suggested. If they don’t work for you and if you need further assistance, contact us by filling up our Android issues questionnaire.

Troubleshooting Galaxy Note 5 Nougat with screen flickering issue

The very purpose of this troubleshooting guide is for us to know what this problem is all about, what causes it and what needs to be done fix it. However, we don’t guarantee that we can fix this device through our suggestions and recommendations especially if it is indeed caused a hardware-related problem. But before we jump to our troubleshooting, here’s one problem from our readers that best describes this issue…

Problem: Hi. My phone is a Galaxy Note 5 and it has recently been updated to Nougat. Everything worked well except one–the screen. After the update, I noticed that there are instances wherein the screen may flicker for a few seconds. It’s brightness may also turn down low and then back up again. I am positive these issues started after an update and while I think it’s firmware-related, I really don’t know what I should do about it. Can you help?

Troubleshooting: The course of our troubleshooting will be to rule out one possibility after another until we can find what the culprit is. While we cannot draw out a conclusion immediately, we need to make sure you files and data are all safe. That being said, here’s what I suggest you do:

Step 1: Reboot your Note 5 in safe mode and see if the screen still flickers

Rebooting in safe mode must be the first procedure you should do since it immediately divides the problem in two. You can tell right away if the screen flickering problem is caused by one or some of the apps your sideloaded or downloaded from the Play Store.

Booting in safe mode means you’re temporarily disabling all third-party apps and elements running the device in its diagnostic state wherein only built-in apps and core services are running. If the screen halts to flicker while the phone is in this mode, then it’s obvious that one or some of the downloaded apps is causing the problem. You need to find that app and uninstall it.

This is how you reboot your Samsung Galaxy Note 5 in safe mode:

  1. Turn off the phone completely.
  2. Press and hold the Power key.
  3. Once ‘Samsung Galaxy Note5’ shows, release the Power key and immediately press and hold the Volume Down button.
  4. The phone will restart but keep the Vol Down button pressed.
  5. Once the phone has finished restarting, ‘Safe mode’ will be display in the lower-left corner of the screen.
  6. You may now release the Volume Down button.

And to uninstall apps from your phone, follow these steps:

  1. From the Home screen, tap the Apps icon.
  2. Find and tap Settings.
  3. Under the ‘APPLICATIONS’ section, find and touch Application manager.
  4. Swipe to the left or to the right to display the appropriate screen but to display all apps, choose the ‘ALL’ screen.
  5. Find and tap the app that has issues.
  6. Touch Uninstall, then OK.

However, if the screen is still flickering in safe mode, the firmware might have some problems.

Step 2: Delete the system caches by booting your phone up in Recovery mode

Considering the fact that the screen flickering issue on your Note 5 started after the Nougat update, it’s possible that some of the system caches are already obsolete or got corrupted and the system might still be using those files, which, apparently, is causing some issues. Therefore, it’s just right to delete them so that they will be replaced with new ones and this is how you do it:

  1. Turn off your Samsung Galaxy Note 5 completely.
  2. Press and hold the Volume Up and the Home buttons first, and then press and hold the Power key.
  3. Keep the three buttons pressed and when ‘Samsung Galaxy Note5’ shows, release the Power key but continue holding the other two.
  4. Once the Android logo shows, release both the Volume Up and Home buttons.
  5. The notice ‘Installing system update’ will show on the screen for 30 to 60 seconds before the Android system recovery screen is shown with its options.
  6. Use the Volume Down key to highlight the option ‘wipe cache partition’ and press the Power key to select it.
  7. When the process is complete, use the Volume Down key to highlight the option ‘Reboot system now’ and hit the Power key to restart the phone.
  8. The reboot may take a little longer to complete but don’t worry and wait for the device to become active.

After this procedure, continue using your phone like you usually do but be observant enough to know if the screen still flickers from time to time because if so, then you are left with no other choice but to do the reset.

Step 3: Perform Master reset on your Galaxy Note 5

This is the next thing you should do since all other steps failed to fix the problem. It’s also your last resort so if the problem still occurs after this, then you should have a technician take a look at your phone because it might, after all, be a problem with the hardware.

Before the reset, however, make sure you backup your files, pictures, music, contacts, etc. as they will be deleted and can no longer be restored. After which, disable the anti-theft feature (Factory Reset Protection) so you won’t be locked out of your device after the reset. This is how you do it:

  1. From the Home screen, tap the Apps icon.
  2. Tap Settings.
  3. Tap Accounts.
  4. Tap Google.
  5. Tap your Google ID email address. If you have multiple accounts setup, you will need to repeat these steps for each account.
  6. Tap More.
  7. Tap Remove account.
  8. Tap REMOVE ACCOUNT.

And this is how your reset your Note 5:

  1. Turn off your Samsung Galaxy Note 5 completely.
  2. Press and hold the Volume Up and the Home buttons first, and then press and hold the Power key.
  3. Keep the three buttons pressed and when ‘Samsung Galaxy Note5’ shows, release the Power key but continue holding the other two.
  4. Once the Android logo shows, release both the Volume Up and Home buttons.
  5. The notice ‘Installing system update’ will show on the screen for 30 to 60 seconds before the Android system recovery screen is shown with its options.
  6. Use the Volume Down key to highlight the option ‘Yes — delete all user data’ and press the Power key to select it.
  7. When the process is complete, use the Volume Down key to highlight the option ‘Reboot system now’ and hit the Power key to restart the phone.
  8. The reboot may take a little longer to complete but don’t worry and wait for the device to become active.

If it’s a hassle to turn off the anti-theft feature, you can also reset your phone with these steps:

  1. From the Home screen, tap the Apps icon.
  2. Find and tap the Settings icon.
  3. Under the ‘Personal’ section, find and tap Backup and reset.
  4. Tap Factory data reset.
  5. Touch Reset device to proceed with the reset.
  6. Depending on the security lock you used, enter the PIN or password.
  7. Tap Continue.
  8. Touch Delete all to confirm your action.

I hope this troubleshooting guide helps.

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  1. My Note 5 will not stop cycling through the face recognition saying it can’t recognize a face and the blue selection box bounces down level by level over and over without stopping. The cache resolution did not work and it won’t allow me access with my finger only by using the pen I’m able to access applications etc. there is also a succession of louder beeps to a bonk at its last level then starts over again, disabling sound fixed this while I try to resolve the other issue. On a side note it acts the same in safe and normal mode. Thanks in advance for your help I’m stumped 🤔.

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