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GS9 Screen - Dark with green lines across top

(Topic created: 07-31-2021 06:21 AM)
userbYIUx8PXki
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I have a samsung galaxy 9 (SM-G960U). Phone screen is now dark with green flickering lines across top of screen. Cannot use phone because screen does not work. Tried rebooting in safe mode and tried phone reset; still same issue.

Issue same as shown in this video: https://wwhttps://www.reddit.com/r/GalaxyS9/comments/ffegry/samsung_s9_screen_backoutflickering_issu... 

I've seen other comments from users saying to download a OLED screensaver but how can I do that if I cannot use the screen to do anything.

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SamsungRei
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I understand how frustrating this is. Thank you for reaching out and for providing the troubleshooting steps you have already tried. As the troubleshooting steps were not helpful, I recommend having the phone evaluated by an authorized service technician. I will be happy to look into the service options for you. Please send a private message with the model code and the IMEI number of the phone. http://bit.ly/2XERsky



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fungurl2010
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Have you hit it let overheat really bad or is it an old phone
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userbYIUx8PXki
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No to overheating or hitting. Phone is 3yrs old.
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SamsungRei
Samsung Moderator
Samsung Moderator
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I understand how frustrating this is. Thank you for reaching out and for providing the troubleshooting steps you have already tried. As the troubleshooting steps were not helpful, I recommend having the phone evaluated by an authorized service technician. I will be happy to look into the service options for you. Please send a private message with the model code and the IMEI number of the phone. http://bit.ly/2XERsky



Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.



Please note, notification emails are a DO NOT REPLY address, you must log-in on the community page in order to respond.

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userbYIUx8PXki
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Took it to an authorized Samsung repair shop. Technician said he sees it regularly on Samsung phones, says iPhone and others very rarely have this issue. I guess Samsung products aren't built to last as well as other manufacturers are
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fungurl2010
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That is why it is an old phone
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Members_cnq26HF
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I have been having this problem on my S9+ since July 2021. I am convinced it's not a hardware problem but due to a software update because it suddenly started happening this summer and because there's a somewhat awkward workaround that works 100% of the time. (I just found this forum so I'm also going to try to post this workaround as a thread of its own!)

I've noticed there appear to be two "modes" in which the phone turns on its display --  I'll call them Mode A (the "regular" mode), and Mode B. Mode A is where the display glitch lies, but Mode B still works well. Mode B occurs when you come from the phone's "Always On Display." The "Always On Display" (which is a somewhat confusing name) is the state where your screen shows you a simple clock when your phone is at rest.

The default seems to be that "Always On Display" is triggered by tapping the screen when it's asleep. So when I did that first and then pushed the power button, the screen would go into Mode B and work perfectly, whereas if I just pushed the power button the screen would go into Mode A and be dark and/or green-tinged.

Fortunately, you can change the setting so that "Always On Display" is actually always on. To do that, go to Settings > Lock screen > Always On Display and make sure not only that it is set to "On" but that "Show always" is selected.

Now, as long as I turn on my phone from that simple clock screen*, the display will work perfectly. If I don't, (such as if my phone has been asleep and I get a phone call) I get the dark/greenish screen.

*There is a caveat: Like I said, there appear to be two display "modes" on the S9+. Sometimes that simple clock screen appears a little strangely tinted, which indicates to me it's in Mode A. If I wait a few seconds I can actually see the clock colors change a little, and then I can press the power button to turn on the screen in Mode B and my phone works well.

I hope this is helpful to someone, and I hope Samsung fixes this issue!!

useroifMtkvjnA
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Hey,

i have the same problem since today and i was able to work around it with the proposed way. Thanks for sharing. 

It seems to be related with the latest OTA update.

Let's hope Samsung will solve it

Mahan
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I'm reading lot of complaints on Samsung phone screens having this issue. I don't see Samsung providing any solution to this. This issue is year long. Phone is just 3 yrs old and is not reliable. I was planning to upgrade to S21 but now will rethink. Sorry to say this, it is very cheap quality and horrible service.
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