How to fix screen flickering issue on Samsung Galaxy A9 (2019)

A screen flickering issue may also occur to new devices like the newly released Samsung Galaxy A9 and while most of the cases we encountered were due to software-related issues, there is always a possibility that the flickering is caused by a hardware problem. As the owner of the phone, you should be the first one to know why the problem occurred. You should also have some basic knowledge on how to troubleshoot your phone that has this problem.

In this article, I will guide you in troubleshooting your Galaxy A9 with a screen flickering problem. We will try to rule out every possibility until we can determine what the problem is and eventually fix it. So, if you’re one of the owners of this device and are currently bugged down by the same problem, continue reading as this post may be able to help you one way or another.

Before we move on to our troubleshooting, if you are looking for a solution to a different issue, make sure you drop by our troubleshooting page as we’ve already addressed some of the most common problems reported by our readers. Find issues that are similar with yours and use the solutions we suggested. If you still need our help after that, then feel free to contact us by filling up our Android issues questionnaire.

When it comes to screen flickering issues, it’s better to know what causes it so here’s what you need to do to fix this problem…

  1. Find out if the flickering happens in safe mode.
  2. Uninstall applications that you think are causing the problem.
  3. Backup important files and then reset your phone.

Running your phone in safe mode will temporarily disable all third-party applications. It is imperative that you do this before anything else because the flickering might be caused by an app. In such case, the issue can easily be fixed because any problem caused by applications, especially third-party ones, can be solved by removing the app from your phone. This might save you from all the hassles of troubleshooting phone. Here’s how you run your Galaxy A9 in Safe Mode:

  1. Turn the device off.
  2. Press and hold the Power key past the model name screen appearing on the screen.
  3. When SAMSUNG appears on the screen, release the Power key.
  4. Immediately after releasing the Power key, press and hold the Volume down key.
  5. Continue to hold the Volume down key until the device finishes restarting.
  6. When Safe mode appears in the bottom left corner of the screen, release the Volume down key.

Assuming that the flickering doesn’t occur while your phone is in this mode, then the next thing you must do is find out which app causes the problem. Reboot your phone back into normal mode and continue using your apps until such time that the screen starts to flicker. Then you would know which app causes the issue. You may try clearing its cache and data first and if that doesn’t fix it, uninstall it. On the other hand, if the problem occurs even in safe mode, then move on to the next procedure as it might be a firmware issue after all.

After those procedures and the screen is still flickering, you have no other choice but to reset your phone. This will rule out the possibility that it’s a firmware issue as we’ve encountered similar issues in the past that were caused by some temporary problems with the firmware. Therefore a master reset is necessary at this point in time. After the reset and the phone still has the same problem, then you must bring it back to the store or shop so that a technician can check it for you. Before the reset though make sure to move or copy important files as they will be deleted during the process. After that, follow these steps to reset your phone:

  1. Back up data on the internal memory. If you have signed into a Samsung account on the device, you have activated Anti-theft and will need your Samsung credentials to finish the master reset.
  2. Turn off the device.
  3. Press and hold the Volume Up key and the Bixby key, then press and hold the Power key.
  4. When the green Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  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 — delete all user data’ 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.

I hope that this how-to post has helped you one way or another. Please help us spread the word by sharing this post to your friends or people who may also have similar problems. Thanks for reading!


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Harold Hisona

Harold has been in the tech industry since 2008 when he started out as a tech support for companies like Time Warner, Comcast and Tracfone. He’s been troubleshooting phones when the smartphone industry started booming. During his tenure as a tech support, he’s already been writing for various tech blogs and doing some freelance SEO. In 2012, he joined a small team of bloggers to write for The Droid Guy, and he has been with the company ever since. Today, he doesn’t only write tutorials and troubleshooting pieces but also shoots and edits videos for The Droid Guy channel while trading stocks on the side. Contact me at Email

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