How to fix screen flickering issue on your Samsung Galaxy A20

When a new smartphone like your Samsung Galaxy A20 has a screen flickering issue, it can be a sign of a firmware problem or a hardware issue. Sometimes the flickering occurs every now and then but most of the time the progression of this issue can be fast and in just a matter of hours, you may already want to throw the phone at the wall. 

In this post, I will walk you through in troubleshooting your Galaxy A20 with screen flickering issue. We will try to consider all possibilities and rule them out one by one until we can determine why this issue occurs and what needs to be done to fix it. So, if you’re one of the owners of this device and are currently experiencing this problem, continue reading as this article may be able to help you. 

Before anything else, if you have other issues with your device, try to browse through our troubleshooting page as we’ve already addressed several issues with this device. Odds are that we’ve already published a post that tackles similar problems. Try finding issues that have similar symptoms with what you currently have and feel free to use the solutions we’ve suggested. If they don’t work for you or if you still need our help, then fill up our questionnaire and hit submit to contact us. 

How to fix Galaxy A20 with screen flickering issue

In troubleshooting your phone that has a screen flickering issue, you have to be thorough to know if this is just a problem caused by software-related problem or a hardware issue. Here are the things you need to do: 

First solution: Force restart your phone

Before anything else, make sure to perform the forced restart to refresh the memory of your phone, reload all its apps and services, as well as rule out the possibility that this is just due to a minor firmware glitch. Here’s how you do it: 

  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 the phone has successfully restarted, observe your phone closely to know if the screen flickering is gone. 

ALSO READ: Fix Samsung Galaxy A20 that keeps disconnecting from WiFi network

Second solution: Run your phone in Safe mode

We need to rule out the possibility that this is just an issue caused by a third-party apps. As you know, there are apps that can cause problems like this. So, run your device in safe mode to temporarily disable all downloaded apps. Follow these steps:

  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. 

If the screen flickering disappears in safe mode, then it’s probably just a minor issue caused by the app. You may then follow these steps to probe further…

  1. Restart your phone normal to boot into standard mode. 
  2. Remember the apps you installed about the time when the phone starts to exhibit signs of 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 screen flickering still occurs even in safe mode, then move on to the next solution. 

ALSO READ: How to fix Samsung Galaxy A20 that keeps freezing and lagging

Third solution: Delete the system cache to fix screen flickering

You need this to rule out the possibility that the screen flickering is due to some corrupt system cache. This doesn’t only delete the cache but also replaces it with a new one. What you have to do is restart your phone in recovery mode and wipe the cache partition from there. Here’s how you do that: 

  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 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.

If the screen flickering still occurs even after this, then try the next solution. 

Fourth solution: Master reset your device

At this point, it’s necessary to reset your phone. It’s the solution you can do to rule out the possibility that it’s just an issue with the firmware. However, before the reset, make sure to create a backup of your important files and data as they will be deleted. After that, remove both your google and samsung accounts so that you won’t be locked out of your device. Once everything is 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 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.

If the screen flickering issue continues even after this, then it’s a possible hardware issue. Bring your phone back to the store or shop so that a technician can fix it for you. 

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