How To Fix LG V40 ThinQ Flickering Green Screen After Drop

The #LG #V40ThinQ is one of the latest premium Android smartphone model available in the market which was released just this October. This phone has a solid body made of an Aluminum frame and Gorilla Glass on both the front and back. It uses a 6.4 inch QHD OLED display and sports a Snapdragon 845 processor paired with 6GB of RAM. Although this is a solid performing phone 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 flickering green screen after drop issue.

If you own an LG V40 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 LG V40 ThinQ Flickering Green Screen After Drop

Problem: I dropped the phone a while back, the only damage was a small barely noticeable chip and crack in the top right corner of the screen. I didn’t worry because there were absolutely no other issues. That was a couple of months ago. Then on Halloween night while taking a picture my phone got knocked from my hand. It fell a short distance, but landed on blacktop screen down. I was scared it was ruined. But when I picked it up there was only a small chipped area in the bottom left corner. The display was still ready to take a picture and I didn’t’ see any other evident damage or effects. I locked it and put it in my pocket. A couple of days later I noticed a very small white line stretching across the bottom of the display after plugging in the charger. It goes directly across the home touch buttons but didn’t hinder usability or visibility in the area at all. However, when I locked my phone that area would begin to flash for a few until the display went completely to sleep. Progressively, about a week ago that area began to flash when the screen was dimmed. Comfort view also had no issues, only happened when dimmed. But at full brightness there were no issues at all, except the previously mentioned flashing upon putting screen to sleep. Just a little earlier tonight I was watching a youtube video when the low battery indicator flashed. I plugged in the charger and was going to finish the video b4 just letting it charge. Suddenly a green tint appeared over the screen, and I noticed the the screen had dimmed slightly, I assume from battery saver. I put it back at full brightness and it went away for a few seconds to a minute possibly. During which the entire screen began flashing. Upon re-dimming the screen flashing stopped but green came back. I restarted the phone and the black screen was different shades of green as it restarted. Wiggling the charging cord on accident made it start to flash after restart. I downloaded a screen tester and it calibrated the screen. That stopped all flashing for a few minutes but not the green. I turned brightness back up hoping it had helped. Seconds later flashing came back but when I re-dimmed the display the green stayed gone. Hoping it was fixed I returned to my home screen using home buttons. I have to swipe the bottom of the screen up to use them. Phone started flashing green and normal. On full bright will be ok for a sec then start flashing. I turned to a google search for help assuming it was my OLED but hoping there may be a way to fix it since it’s not a constant problem. Coming across ir page in the results, I changed the developer options as per your instructions , disabling HW overlays. It seemed to fix it. However, returning to ur page to thank you, it started again after I touched my space bar. However it’s extremely random and seems to stay normal except for the line at the bottom. Kinda seems like touching it or moving charging cord affects it, but will stop for long periods no matter what I do? I figure my OLED needs replacing but Im hoping u have other Ideas. I have an LG V40 ThinQ and cannot afford any kind of repair. Replacing the phone is absolutely not an option. It’s still functional, but for how long? I live on my phone. Its only source of information for news, and keeping up with kids school. Teacher communications and so forth. It is also my only source of entertainment which is more important than u may think, since I am a stay at home Mom, who is alone from 7am to 3:30 pm 5 days a week. Even if it’s just maybe isolating that area or something, can u help?

Solution: It’s very likely that the drop might have damaged the display assembly of the phone already which is causing this issue. The best troubleshooting step that you can do right now is to check if the problem is caused by a software glitch by doing a factory reset. Make sure to backup your phone data before doing the reset.

  • Back up data on the internal memory before performing a factory reset.
  • From the Home screen, Settings.
  • Tap the ‘General’ tab.
  • Tap Restart & reset.
  • Tap Factory data reset.
  • If desired, tap the Erase SD card checkbox.
  • Tap RESET PHONE – Delete all – RESET

You can also perform the factory reset using the hardware keys.

  • Backup all data on the internal memory before performing a master reset.
  • 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 immediately check if you still experience the same issue ( don’t install any apps in the phone yet). In case the issue still persists then this is most likely a hardware related problem already. You will have to bring the phone to  service center and have it checked as it’s likely that the phone will need a display assembly replacement.

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