How to fix your Samsung Galaxy A20 with screen flickering issue

The thing about the screen flickering issue is that it occurs to any smartphone regardless of the model. That seems to be the case with some owners of the Samsung Galaxy A20. This problem could be a minor issue with the firmware or it could be a sign of a serious hardware problem. It may be difficult to determine what this issue is all about without troubleshooting your phone. 


So, in this post, I will walk you through in troubleshooting your Galaxy A20 that has a screen flickering issue. We will look into each possibility and rule them out one by one until we can determine the cause and hopefully fix it. So, if you’re one of the owners of this phone and are currently having similar symptoms, continue reading as this article may be able to help you one way or another. 

Before anything else, if you are looking for a solution to a different problem, then drop in on our Galaxy A20 Help Guides page for we have already solved some of the most common problems with this device. Try to find issues that are similar to yours and feel free to use our workarounds and solutions. 

Troubleshooting Galaxy A20 with screen flickering issue

What you need to do is rule out the possibility that it’s just a software-related issue. At the end of your troubleshooting and your phone still has the screen flickering issue, then it could be a hardware problem and the best thing you can do about that is have a tech check the device for you. That said, here’s what you need to do about this problem: 

First solution: Perform the Forced restart to fix screen flickering on your Galaxy A20

The first thing that you should do, especially if this problem started out of nowhere without apparent reason or cause, is the Forced Restart. It’s a simulated battery removal that will refresh your phone’s memory and reload all apps and services. If this just a problem caused by a minor firmware issue, then this procedure should be able to fix it. Here’s how it’s done: 


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  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 A20 logo shows on the screen.

Once your phone has finished rebooting, try to see if the screen flickering still occurs. If it does, then move on to the next solution. 

Second solution: Run your phone in safe mode

There are apps that also cause the screen flickering issues, especially games and other heavy apps. So, in this step, it’s best to restart your phone in safe mode to temporarily disable all third-party apps. If the screen flickering issue doesn’t occur in safe mode, then it means that there really an app or two that’s causing the problem. This is how you reboot your phone 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. 

Assuming that the screen flickering problem doesn’t occur while your phone is in this mode, then this is what you have 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 starts 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. 

On the other hand, if the phone still has the screen flickering issue even in safe mode, then move on to the next solution. 

Third solution: Wipe the cache partition

I have personally encountered this problem in the past and what I did before I decided to reset the device was to wipe the cache partition to replace the old system cache. There are times when the system cache gets corrupted and when that happens, performance issues may occur including various hardware-related issues. To rule this possibility out, here’s what you need to do:

  1. Turn off the device.
  2. Press and hold the Volume Up and Power keys.
  3. When the Galaxy A20 logo shows, release all three keys.
  4. Your Galaxy A20 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 your phone has successfully rebooted, try to see if the screen flickering issue is gone If it remains, then move on to the next solution. 

Fourth solution: Backup your files and reset your phone

This is your last resort. If the screen flickering issue continues after the reset, then it’s a hardware problem and you need a technician to physically check the phone. However, if this is just some kind of a firmware or software-related problem, then a reset should be able to get rid of it. Before the reset though, create a copy of your important files and data as they will be deleted during the process. After which, remove your Google and Samsung accounts so that you won’t be locked out. Once everything is in order, follow these steps to reset your phone: 

  1. Turn off the device.
  2. Press and hold the Volume Up and Power keys.
  3. When the Galaxy A20 logo shows, release all three keys.
  4. Your Galaxy A20 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.

After the reset, set up your phone as a new device and see if the screen flickering is gone or not. Again, if the issue remains after the reset, bring the phone back to the shop so that a technician can check it for you. 

I hope that we’ve been able to help you fix your Galaxy A20 with screen flickering issue. 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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