How To Fix The LG V40 ThinQ Screen Flickering Issue

The #LG #V40ThinQ is a premium Android smartphone first released in October 2018. This device is MIL-STD-810G compliant and is IP68 certified. It uses an Aluminum frame with Gorilla Glass 5 on both the front and back. Its 6.4 inch P-OLED display with a resolution of 1440 x 3120 pixels is great for viewing various multimedia content. Under the hood you will find the Snapdragon 845 processor paired with 6GB of RAM which should make the phone run smoothly. 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 LG V40 ThinQ screen flickering issue.

If you own a LGV40 ThinQ or any other Android device for that matter then feel free to contact us using this form. We will be more than happy to assist you with any concern that you may have with your device. This is a free service we are offering with no strings attached. We however ask that when you do contact us try to be as detailed as possible so that an accurate assessment can be made and the correct solution can be given.

How To Fix The LG V40 ThinQ Screen Flickering Issue

Before performing any troubleshooting steps on this phone it’s best to make sure that it is running on the latest software version first. If an update is available then I suggest that you download and install it first. You can connect your phone to a computer with the latest version of the LG PC Suite software installed to get the update.

Perform a soft reset

What you will need to do first in this case is to refresh the phone software which can be done by a soft reset. To perform this procedure just press and hold the Power button and Volume Down until the device powers off, approximately 8 seconds, then release. Once this is done check if the screen still flickers.

Start the phone in Safe Mode

There are cases when an app you downloaded from the Google Play Store will cause issues on the phone when it is installed. To check if an app you downloaded is causing the problem you will have to start the phone in Safe Mode as only the pre-installed apps are allowed to run in this mode.

  • With the screen on, press and hold the Power key.
  • In the options menu that displays, tap Power off and restart.
  • The device will restart and the Safe mode overlay will no longer show on the screen.

In case the LG V40 ThinQ screen flickering issue does not occur in this mode then it is most likely caused by an app you installed. Find out what app this is and uninstall it.

To find the specific app you will need to do a trial and error method. Start the phone normally then uninstall an app. Check if the screen will still flicker. Repeat this process until the screen no longer flickers after uninstalling an app. This last app you uninstalled is most likely the culprit.

Wipe the cache partition of the phone

Sometimes the cached data stored in the dedicated partition of the phone can become corrupted. When this happens this this will usually cause certain issues to occur on the phone. To eliminate the possibility that this is what’s causing the problem you will have to wipe the cache partition of the phone from the recovery mode.

  • From the Home screen, tap Settings.
  • Tap the ‘General’ tab.
  • Tap Storage > Internal storage.
  • Wait for menu options to finish calculating.
  • Tap Free up space.
  • Tap Temporary files & raw files.
  • Select the following options: Cached data, Clip tray temporary files, Raw files from camera.
  • Tap Delete > DELETE

Check if the issue still occurs.

Perform a factory reset

In case the above steps fails to fix the LG V40 ThinQ screen flickering issue then your last option is to do a factory reset. Make sure to backup your phone data before doing the reset as this will be deleted in the process.

  • Turn off the device.
  • Press and hold the Power and Volume down buttons.
  • When the LG logo appears, quickly release and then re-hold the Power button while continuing to hold the Volume down button.
  • When the ‘Delete all user data (including LG and carrier apps) and reset all settings’ message appears, use the Volume down button to highlight Yes.
  • Press the Power button to reset the device.

Once the reset is complete setup your phone again, but don’t install any apps yet. Try to check if  the screen still flickers. If it does then this is most likely caused by a faulty hardware component in which case you will need to bring the phone to a service center and have it checked.

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