How To Fix Samsung Galaxy Note 9 Screen Flickers When Connected To Charger

Welcome to another installment of our troubleshooting series where we aim to help our readers who own the #Samsung #Galaxy #Note9 fix the issues that they are experiencing with their phone. This is the latest model in the Note series of devices released this year which is equipped with the latest hardware components. Although this is a solid performing device there are instances when certain issues can occur which we will be addressing today. In this latest installment of our troubleshooting series we will tackle the Galaxy Note 9 screen flickers when connected to charger issue.

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How To Fix Samsung Galaxy Note 9 Screen Flickers When Connected To Charger

Problem: Hi! I have a Samsung Note 9, Android Version 8.1 that has been factory reset once for another person to use. Updated the software version and after that i noticed that the screen starts to flicker pretty violently when it is connected to a plug point. However, when the phone is not connected to any power source, the screen never flickers. Any idea why and how to solve this? I have tried wiping the partition cache. Booting into safe mode, it still has the same flickering when connected to a power source. Any idea why and how to solve this?


Solution: Before performing the recommended troubleshooting steps for this issue it’s best to make sure that the phone is running on the latest software version. If an update is available then I suggest that you download and install it first.

If your screen flickers when it is connected to a charger then this is most likely a hardware related problem. Below are the recommended troubleshooting steps that you need to perform to fix the problem.

Clean the phone charging port

There are cases when dirt or debris stuck in the charging port of the phone can cause some form of short circuit that can make the display flicker. To eliminate any foreign particles present in the charging port of the phone you should clean this port using a can of compressed air. Once this is done try to check if the issue still occurs.

Try using a different charging cord and wall charger

A defective charger or charging cord can also cause this particular problem. To check if this is what’s causing the problem you should try using a different charging cord and wall charger to charge your phone.

If the problem still occurs then the next step is to check if the issue is caused by a software glitch. Perform the troubleshooting steps listed below.

Perform a soft reset

One of the first troubleshooting step that you will need to do is a soft reset. This will refresh the phone software and usually fixes minor software glitches.

  • Press and hold the Power and Volume down key for up to 45 seconds.
  • Wait as the device restarts.

Once the phone starts try to check if the screen still flickers while the phone is charging.

Check if the problem occurs in Safe Mode

There are instances when an app you downloaded on your phone can cause issues. To check if a third party app is causing this problem you will have to start the phone in Safe Mode as only the pre-installed apps are allowed to run in this mode.

  • Turn the device off.
  • Press and hold the Power key past the screen with the device name.
  • When ‘SAMSUNG’ appears on the screen, release the Power key.
  • Immediately after releasing the Power key, press and hold the Volume down key.
  • Continue to hold the Volume down key until the device finishes restarting.
  • Safe mode will display in the bottom left corner of the screen.
  • Release the Volume down key when you see ‘Safe Mode’.

If the issue does not occur in this mode then the problem could be caused by one of the apps you downloaded. Find out what app this is and uninstall it.

Wipe the cache partition of the phone

Your phone will store cached data of apps in a dedicated partition in its internal storage. This data helps apps open faster making for a better mobile experience. There are however instances when this cached data can become corrupted and can cause issues with the device. To check if this is what’s causing the problem you should wipe the cache partition of the phone.

  • Turn off the phone.
  • Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  • When the device logo screen displays, release only the Power key.
  • When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key several times key to highlight ‘wipe cache partition’.
  • Press the Power key to select.
  • Press the Volume down key to highlight ‘yes’ and press the Power key to select.
  • When the wipe cache partition is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.

Check if the issue still occurs.

Perform a factory reset

One last troubleshooting step to consider if the above steps fails to fix the problem is a factory reset. This will revert the phone back to its original factory condition. Make sure to backup your phone data before doing this step.

  • Make sure that the phone is off.
  • Press and hold the Volume Up key and the Home key, then press and hold the Power key.
  • When the device logo screen displays, release only the Power key
  • When the Android logo displays, release all keys (‘Installing system update’ will show for about 30 – 60 seconds before showing the Android system recovery menu options).
  • Press the Volume down key several times key to highlight ‘wipe data / factory reset.’
  • Press Power button to select.
  • Press the Volume down key until ‘Yes — delete all user data’ is highlighted.
  • Press Power button to select and start the master reset.
  • When the master reset is complete, ‘Reboot system now’ is highlighted.
  • Press the Power key to restart the device.
  • Once the phone has fully started do not install any apps in your phone yet. Try to check first if the battery drains quickly.

In case the issue still occurs after performing the steps listed above then you should bring the phone to a service center and have it checked a this is most likely caused by a faulty hardware component already.

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