Develop Bugs

Screen Brightness Dynamically changes...

Hey everyone,
I've been playing around with my new phone for a few hours now.
So far, I love it!
However, I have noticed a strange bug. The browser seems to be dimming webpages.
To see what I'm talking about:
1) Open google.com
2) open the tab viewer
3) click on the google tab - it expands to fill the screen
4) as soon as it fills the screen, the page immediately 'dims'
As it is filling the screen, the background appears nice and white. However, once it completely fills the screen, the background immediately dims to a darker white...
VIDEO
Google Bug Report
https://code.google.com/p/android/issues/detail?id=23765#c0

OK, this isn't just limited to the browser. It happens on pretty much every app with a white splash screen. I.e. opening Facebook. The splash screen is nice and white, but when the content loads, the white background becomes dimmer and more gray...
Does anyone else know what I am talking about? I'm on 4.0.1 if that matters.
Sent from my Galaxy Nexus using Tapatalk

The phone dims purposely. I. Don't know if there is a setting to stop it though. I believe it is powersaving feature. Touching your screen resets the time for dimming and screen off though.
Sent from my Galaxy Nexus using xda premium

@rbiter said:
The phone dims purposely. I. Don't know if there is a setting to stop it though. I believe it is powersaving feature. Touching your screen resets the time for dimming and screen off though.
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I'm not talking about the 'about to go to sleep' dim. This is a very slight, almost unnoticeable, dim when the white animation completes. For example, say I open an app that has a white splash screen and a white background. The app opens with the very white splash scree, then as soon as the content loads, the very white background 'changes' to a more 'off-white' or 'gray' color...
Can others please chime in? I really want to look into this bug, but I need to know if it is limited to me.

This is crazy now. Open google.com on the browser. Then tap the search bar (on the webpage) to bring up the keyboard. The white background of google.com becomes whiter when the keyboard opens. Close the keyboard with the back button, and the background becomes dimmer again.
Even the status bar partakes in this "dimming" action, so it is not limited to the web page.
WTF?

I see this too, it looks like it is caused by dynamic contrast adjusting the contrast based on the picture.

melterx12 said:
I see this too, it looks like it is caused by dynamic contrast adjusting the contrast based on the picture.
Click to expand...
Click to collapse
Thanks for your reply!
Anyway to keep the contrast the way it is when the keyboard is open? The whites look so much better that way...

I noticed this on my old Droid Charge as well. Maybe it's a Super AMOLED thing?
Sent from my Galaxy Nexus using xda premium

blempka said:
I noticed this on my old Droid Charge as well. Maybe it's a Super AMOLED thing?
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I'm not sure... Contrast is pretty bad when the screen is predominantly white. However, as soon as some darker colors are introduced (menu/keyboard), the whites brighten up and contrast improves.
Could this be because the all white screen draws more power than a screen that is only partially white?
Go to a mostly white screen (i.e. Google.com) and slowly pull down the notification bar. You will see that the white of the webpages gradually becomes brighter... This is really bizarre...

Good way to test is type in about:blank into the browsers address bar for a full white page.
My gnex does it as well I've never noticed it before but now I can see it its going to annoy me
Sent from my Galaxy Nexus using xda premium

hurston2510 said:
Good way to test is type in about:blank into the browsers address bar for a full white page.
My gnex does it as well I've never noticed it before but now I can see it its going to annoy me
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
It originally annoyed me. However, I probably will get used to it in a couple of days.
I was originally worried that it was just my phone doing this (due to the lack of replies on this thread). However, now that is seems like this occurs on all GNs, I'm pretty relieved
Whatever, this screen is gorgeous when displaying colors. Black-on-white contrast could be better (i.e. black text on an all-white webpage), but it is good enough...
I'm still wondering if it is hardware or software that is causing this. If it was software, I would definitely like the higher contrast white all the time...

Mine also does this D:
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I think the galaxy s2 and other Samsungs like the note do this, but it is by design from the setting which can be turned off. It supposedly is for power saving of bright colors.
My question is any GSM nexus user seeing this? Cause I attempted the steps in this thread in a dark room and dinr notice any issue whatsoever. Is this a Verizon version issue where maybe all lte versions have this enabled to conserve power?

RogerPodacter said:
I think the galaxy s2 and other Samsungs like the note do this, but it is by design from the setting which can be turned off. It supposedly is for power saving of bright colors.
My question is any GSM nexus user seeing this? Cause I attempted the steps in this thread in a dark room and dinr notice any issue whatsoever. Is this a Verizon version issue where maybe all lte versions have this enabled to conserve power?
Click to expand...
Click to collapse
Yes, mine is a GSM. I'm also on 4.0.1. Are you on .2?

Original Post Updated
Video:
Bug Report: https://code.google.com/p/android/issues/detail?id=23765#c0

I also was going to post on this yesterday. I have tested in multiple apps and it seems the worst in forums apps. When I touch a thread link it dims out and then flashes back. I thought it may be the auto bright setting but I switched it to full bright and get the same issues.
Very annoying
Sent from my Galaxy Nexus using XDA App

I swore I saw this before in different places. Then I tried what you guys were doing, and yeah its there.
Now that's all I can see.

It is a powersaving feature since the amoled needs the most power for full white
Sent from my Galaxy Nexus using XDA App

As far as I can see this is not an issue in 4.0.3. I am running AOKP and Franco's kernel.
Sent from my Galaxy Nexus using XDA App

tonarm said:
It is a powersaving feature since the amoled needs the most power for full white
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
So then we should be given control over that. The stock GSII had lots of control over the screen color, and power saving features.

Pink stripe down middle of screen

On my E4GT, when I turn the display brightness really low with my ScreenDim app, and then look at something (e.g., a PDF file) which fills the screen with a white background (and black text), while being in a dark room, I can see that the middle third of the screen is slightly pinkish, forming a pinkish vertical stripe, instead of white.
Does anyone else have the issue? If you want to try to see if yours has the issue, you can use ScreenFilter and turn the brightness really low, or you can use the free ScreenDim Trial and set to 25% or a bit lower (in Easy Mode). I'm wondering if I should return the phone to the store, or if they're all like this.

Does the lack of replies mean that I am the only one having the problem?

arpruss said:
Does the lack of replies mean that I am the only one having the problem?
Click to expand...
Click to collapse
LOL, good for you for being persistent AR.
I tested this for you on mine and I'd say mine is a little over half on the left side as what you described.
Edit: Title is a little misleading but your initial comment about the whole left side of the screen seems to be correct.

Sounds like a symptom of the application. I have not seen a single et4g with a pink line/screen come through my service and repair centers.

eeeeeeeeek said:
Sounds like a symptom of the application. I have not seen a single et4g with a pink line/screen come through my service and repair centers.
Click to expand...
Click to collapse
This is something you wouldn't normally see in a stock scenario. The lighting app allows for drawing the screen down below 25% and the discoloration is very faint. I wouldn't probably have even noticed it unless I was asked specifically to look for it.
I don't think AR was pointing it out as a problem. He was probably just curious if anyone else could duplicate it using the same setup (well, and to make sure he wasn't really having an issue too I suppose ).

ee[LEFT said:
[/LEFT]eeeeeeek;26299088]Sounds like a symptom of the application. I have not seen a single et4g with a pink line/screen come through my service and repair centers.
Click to expand...
Click to collapse
No, I don't think it's a software problem. The app lowers screen brightness to the lowest level allowed by the OS and then draws a light gray overlay over the screen. The device isn't rooted and the app uses standard documented apis. None of this should produce a nonuniform effect like this stripe. In theory, the same issue should come up if one turns the brightness to a minimum with the OS settings and them loads a light gray image. I'll see if I can produce it.
Also, you only see the effect well if you are in a quite dark room. But since I like to read in the dark, this matters to me. If all units have this, I'll live with it. But if it's only mine, I want it to be fixed.
This issue is one of the reasons I haven't rooted: I may need to return the unit.

You are right. I would want to know if it is my phone or not before I make a decision to have it replaced. What if the replacement phone not only has the same issue, but a couple of new ones as well?

Here's a test that doesn't require any special app.
Turn off automatic brightness and set brightness to minimum.
Then view this test image with the browser
http://pruss.mobi/test/A0.jpg
Zoom until it fills the screen. Go into a dark closet or other windowless room without lights. View the screen from different angles. To me, the discoloration is most visible if I view it in portrait mode, straight on. It disappears if I tilt the screen side-to-side a bit. Here is an attached copy:
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Here are some other test images. For me, the above one showed the discoloration best, but it might be different for different people.
http://pruss.mobi/test/70.jpg
http://pruss.mobi/test/80.jpg
http://pruss.mobi/test/90.jpg
http://pruss.mobi/test/B0.jpg
http://pruss.mobi/test/C0.jpg
http://pruss.mobi/test/D0.jpg
http://pruss.mobi/test/E0.jpg
The images are all solid gray.
Here's a QR code for the A0 image:

Hi AR. I tried it out again but I still do not have a line down the screen. I tried several screen brightness levels all the way to 0% where I could barely see the grey and still no line for me. Hope this helps and hopefully someone else will try it for you too.

tdunham said:
Hi AR. I tried it out again but I still do not have a line down the screen. I tried several screen brightness levels all the way to 0% where I could barely see the grey and still no line for me. Hope this helps and hopefully someone else will try it for you too.
Click to expand...
Click to collapse
The other issue my screen has is that if I view a 100% black image, and go into a very dark area (when I tested this most thoroughly, I was in a closed, windowless garage at night), and let my eyes get adjusted to the dark, eventually (after a bit of dark adaptation) I see an gray glow from the screen, with many irregular small patches that are completely black peeking out of the grayness. This is a very small aberration, but it is noticeable when outside at night running an astronomy app.

Interestingly, after a couple of months the problem seems to have decreased. Or my brain is screening it out.

How to make screen display black like screen is off?

As we know, SA screen is self lighting not like traditional LCD screen that needs background lighting , so it is possible to make display black as 100% pure black, in the dark doesn't even see the screen is on.... I have seen a picture comparable with IPS, SLCD... etc, which in the dark place you can't even know the screen is on when it displays black...
I just don't know what value set to make it happen, anyone has any idea?
Sent from my Galaxy Nexus using xda premium

If you have a device with display SuperAMOLED ok, but if it is any other display you can not do anything, the screen is hardware component and you can not change it via software
Sent from my Galaxy Nexus using xda premium

polimeno said:
If you have a device with display SuperAMOLED ok, but if it is any other display you can not do anything, the screen is hardware component and you can not change it via software
Sent from my Galaxy Nexus using xda premium
Click to expand...
Click to collapse
I know, what I was talking about is i9250, I just don't know how to make it happen
Sent from my Galaxy Nexus using xda premium

What exactly are you trying to accomplish? Sure you can do it, but I can't imagine why on earth would you want to make the whole screen black. You can't use a black screen, may as well just turn the display off.

pfmiller said:
What exactly are you trying to accomplish? Sure you can do it, but I can't imagine why on earth would you want to make the whole screen black. You can't use a black screen, may as well just turn the display off.
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this is what i am trying to do
if i don't mark that place, i guess you don't even know there is forth phone exist , do you ?
that is AMOLED screen

The pixels in amoled displays individual turn on/off so when you display a black image the pixels are off.
Sent from my Galaxy Nexus using xda premium
---------- Post added at 11:44 PM ---------- Previous post was at 11:43 PM ----------
The pixels in amoled displays individualy turn on/off so when you display a black image the pixels are off.
Sent from my Galaxy Nexus using xda premium

Still not sure why you want to do this, but you can get pretty close by viewing a all black pictures in photo gallery. I think there are also pixel tester apps in the market that can display a full screen of one color.

pfmiller said:
Still not sure why you want to do this, but you can get pretty close by viewing a all black pictures in photo gallery. I think there are also pixel tester apps in the market that can display a full screen of one color.
Click to expand...
Click to collapse
The reason most people are trying to figure this out is because it will save an abundant amount of battery life if less led's are being used when the screen is on.

I'm a little confused as to what you're trying to do, but some roms like AOKP you can turn off the nav bar. In which case, just find a totally black picture (or make one in paint) and view it in the gallery

Im using an app called no wallpaper from the play store. As far add I can tell it does just that, gives you a setting to have nothing as a wallpaper, pure black.

nope... i tried to view whole black picture , but still there is some background light like displaying grey when i place my phone in dark place , i can't set it 100% black like screen is off. can't figure out how is RGB and gamma setting
i know it is non-sense , but i am just curious about it...

qtwrk said:
nope... i tried to view whole black picture , but still there is some background light like displaying grey when i place my phone in dark place , i can't set it 100% black like screen is off. can't figure out how is RGB and gamma setting
i know it is non-sense , but i am just curious about it...
Click to expand...
Click to collapse
I do not believe there's anything you can do about it. Even the amoled displays will have a very faint background lightning that can be seen when it gets dark. Amoled displays have very nice blacks but they are not 100% pure black.
I think that photo tricks you. As traditional LCD displays have much more background lightning going on. That photo is obviously exposed so that the little light that comes from the darker one has so little light coming from it so the sensor on the camera couldn't capture it with such a "quick" exposure that was needed to accurately display the background light from the LCD displays.

dannejanne said:
I do not believe there's anything you can do about it. Even the amoled displays will have a very faint background lightning that can be seen when it gets dark. Amoled displays have very nice blacks but they are not 100% pure black.
I think that photo tricks you. As traditional LCD displays have much more background lightning going on. That photo is obviously exposed so that the little light that comes from the darker one has so little light coming from it so the sensor on the camera couldn't capture it with such a "quick" exposure that was needed to accurately display the background light from the LCD displays.
Click to expand...
Click to collapse
Very accurate post here. Here's a great video from XDA TV that talks about the differences:
http://www.xda-developers.com/xda-tv-2/truth-about-mobile-device-screens-xda-developer-tv/

There is a thread here about the GNex screen which, in a photo, shows that the leds dont turn off completely when it wants to show black. There still is some amount of light coming out.
Sent from my AOKP Nexus using xda Premium

Yep, just tested it with CNA. Turned off navbar, statbar, dock, used pure black wallpaper. Phone looks like it's turned off under normal lighting. But in a completely dark room there is a dim, gray, 1280x720 rectangle.

Unrealistic colors for Movie/TV viewing... any way to calibrate?

Coming from a professionally calibrated plasma TV, I find the colors very unrealistic when using the Tab S for movie / TV viewing. The colors are way too intense / overblown, and peoples faces appear too pink/red. Is there any way to fix this?

romnation said:
Coming from a professionally calibrated plasma TV, I find the colors very unrealistic when using the Tab S for movie / TV viewing. The colors are way too intense / overblown, and peoples faces appear too pink/red. Is there any way to fix this?
Click to expand...
Click to collapse
Have you not tried switching display modes?
I find basic mode to be the most realistic, the colours are nowhere near as saturated and much more natural.

I've tried cinema mode. It works for me.

Make sure Reading Mode is not on.

There is a way to calibrate the screen, but for now it involves building kernel from source. I was doing it back on my GT-P6800.
If someone more skilled in kernel patching would make a sysfs interface for that.

romnation said:
Coming from a professionally calibrated plasma TV, I find the colors very unrealistic when using the Tab S for movie / TV viewing. The colors are way too intense / overblown, and peoples faces appear too pink/red. Is there any way to fix this?
Click to expand...
Click to collapse
heyjoe66 said:
There is a way to calibrate the screen, but for now it involves building kernel from source. I was doing it back on my GT-P6800.
If someone more skilled in kernel patching would make a sysfs interface for that.
Click to expand...
Click to collapse
I have the 10.5 and am praying someone makes a basic kernel that allows this. The tablet just has a nasty orange/greenish tint when showing human skin. It's the only thing about the tablet I don't like and tried getting used to but can't. Watching videoe, looking at pictures, it's very annoying and forget about editing photos on the tablet, with this tint it's so hard to judge colors that I can't edit raw files using photomate r2 anymore because I end up compensating for the tablets natural tint that the edited pics look ok on the tablet but lacks greens everywhere else.
Anyhow, I'm rambling, but praying for a kernel that allows us to edit the screen tint in synapse!

romnation said:
Coming from a professionally calibrated plasma TV, I find the colors very unrealistic when using the Tab S for movie / TV viewing. The colors are way too intense / overblown, and peoples faces appear too pink/red. Is there any way to fix this?
Click to expand...
Click to collapse
toyanucci said:
I have the 10.5 and am praying someone makes a basic kernel that allows this. The tablet just has a nasty orange/greenish tint when showing human skin. It's the only thing about the tablet I don't like and tried getting used to but can't. Watching videoe, looking at pictures, it's very annoying and forget about editing photos on the tablet, with this tint it's so hard to judge colors that I can't edit raw files using photomate r2 anymore because I end up compensating for the tablets natural tint that the edited pics look ok on the tablet but lacks greens everywhere else.
Anyhow, I'm rambling, but praying for a kernel that allows us to edit the screen tint in synapse!
Click to expand...
Click to collapse
Found one more screen mode in Accessibility settings AMOLED Cinema (standard), but a bit less contrast.
To try it you can go to Settings > Accessibility > Vision > Color adjustment
Now you'll be offered to sort some color tiles. If you place them correct, it'll say that 'color adjustment unnecessary', but if you switch couple of them, it'll enable color adjustment. It looks like some hue shift, not too much use for healthy vision, but you can turn the 'Color adjustment' slider down and will have that less contrast mode.
Please check it and say, what you think.

heyjoe66 said:
Found one more screen mode in Accessibility settings AMOLED Cinema (standard), but a bit less contrast.
To try it you can go to Settings > Accessibility > Vision > Color adjustment
Now you'll be offered to sort some color tiles. If you place them correct, it'll say that 'color adjustment unnecessary', but if you switch couple of them, it'll enable color adjustment. It looks like some hue shift, not too much use for healthy vision, but you can turn the 'Color adjustment' slider down and will have that less contrast mode.
Please check it and say, what you think.
Click to expand...
Click to collapse
You dear sir, has made my tablet experience so much better! Skin tones are now life like and doesn't look completely unnatural. This is a welcomed improvement though it seems to also adjust contrast which I'd rather it not do, but I'm still quite pleased.
Thanks again!

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I've tried a few configurations and have found this to be the best setting, the colors are spot on and look like they do on my MacBook.
Sent from my SM-T800 using Tapatalk

toyanucci said:
I've tried a few configurations and have found this to be the best setting, the colors are spot on and look like they do on my MacBook.
Sent from my SM-T800 using Tapatalk
Click to expand...
Click to collapse
Are the whites better?
Sent from my HTC One_M8 using XDA Premium 4 mobile app

Where was the slider at default?.....I sent it back for new one because of black clipping in dark sceens it was like pixelated. Mine it was less saturated so thats good to know if i want more color.. Thanks for the info

toyanucci said:
I've tried a few configurations and have found this to be the best setting, the colors are spot on and look like they do on my MacBook.
Sent from my SM-T800 using Tapatalk
Click to expand...
Click to collapse
By configurations you mean order of that color tiles? Can you remember how did you ordered them and how that affected the image?

Amazing stuff here. Thanks!

Please, have a look here

Went through the the color sorting thing and after I was done it said "Color adjustment is not necessary", so I guess mine was set up right. The only time people ever looked overly orange to me was when I was watching Jersey Shore repeats.

Green hue on bottom half of screen

See attached image.
I've noticed a greenish hue on the bottom half of the screen. It's most visible at low brightness and greyish/darkmode backgrounds. Not visible on amoled-black backgrounds. Present both in 120hz and 60hz, and both vivid and natural screen mode. Intrusive enough that I notice it several times a day.
Anyone else have this problem? Is it software or hardware-related?
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YES!!! I've had this problem since getting my S20 Regular on Saturday. I got this replaced from the store yesterday, and the new phone has similar issue, although it's not that apparent. What I also see is that in Light mode, the white is warmer at the top and cooler at the bottom. These hues are just inconsistent across the system, be it the Settings menu or different apps. Here's everything I've done to eliminate the issue but failed:
Cycle through all combinations of resolution+refresh rate
Switch between Natural and Vivid colour settings, including changing colour temperature
Turned off Adaptive colour filter from Dark mode settings
Disabled 'Use sRGB picture colour mode from Developer options
Force Dark mode from Developer options
Simulated Monochromacy
Performed Factory reset
Got the OS reinstalled at the Samsung service center
Apps in which I was able to see this issue in:
Most system apps like Settings, Messages, Dialer, etc.
Discord (especially in the channel menu)
Falcon Pro (Twitter app)
Gmail
WhatsApp
Telegram
Reddit sidebar
Gboard (dark themes with Key borders on)
Apps where this isn't an issue
Twitter
Discord (AMOLED mode. This doesn't change the side menu which is still grey)
I'm attaching pictures comparing my first S20 with an M30s that also has a sAMOLED screen. The green hue is visible in the dialer app in the first pic, and how this green hue distorts greys is visible in the 2nd pic in the hamburger menu. The S20 becomes lighter towards the bottom whereas the M30s remains consistent for the most part.
My current S20 doesn't show this behavior in the Dialer app (it mostly seems pitch black) but in the other apps, I can marginally make out inconsistency, and in this case it becomes lighter from the right of the screen to the left. Even in Gboard with a true dark theme, some of the keys appear lighter than others because of this.
I'm gonna try to get this replaced from the store tomorrow, but good to know that someone else is facing the same issue.

Had the same problem. It was really annoying. Every gray background had a strange green hue. You can also some a hue on other colors, but it’s not turning into green in all situations.

Yes, also on Ultras and plus. I returned the ultra because of it and got a plus. It is a lot more bearable but I have to confess that I ordered another Plus to see if it is better.
See here:
https://forum.xda-developers.com/galaxy-s20-plus/help/screen-problem-t4065793
https://forum.xda-developers.com/galaxy-s20-plus/help/s20-ultra-oled-bad-uniformity-bright-t4067051
https://forum.xda-developers.com/galaxy-s20-ultra/help/green-tint-dark-background-low-t4065621

Gleetch said:
Had the same problem. It was really annoying. Every gray background had a strange green hue. You can also some a hue on other colors, but it’s not turning into green in all situations.
Click to expand...
Click to collapse
Did you get yours replaced?

I thought I could live with it but it is also getting extremely annoying on dark backgrounds that I had to turn off dark mode indefinitely. I think I'm gonna fight with Samsung to try to get a screen replacement at least (in a couple months when they get their shiet together) since it is not acceptable on a $1400 phone. I should have waited before selling my note 10+

sheik_yerbouti said:
YES!!! I've had this problem since getting my S20 Regular on Saturday. I got this replaced from the store yesterday, and the new phone has similar issue, although it's not that apparent. What I also see is that in Light mode, the white is warmer at the top and cooler at the bottom. These hues are just inconsistent across the system, be it the Settings menu or different apps. Here's everything I've done to eliminate the issue but failed:
Cycle through all combinations of resolution+refresh rate
Switch between Natural and Vivid colour settings, including changing colour temperature
Turned off Adaptive colour filter from Dark mode settings
Disabled 'Use sRGB picture colour mode from Developer options
Force Dark mode from Developer options
Simulated Monochromacy
Performed Factory reset
Got the OS reinstalled at the Samsung service center
Apps in which I was able to see this issue in:
Most system apps like Settings, Messages, Dialer, etc.
Discord (especially in the channel menu)
Falcon Pro (Twitter app)
Gmail
WhatsApp
Telegram
Reddit sidebar
Gboard (dark themes with Key borders on)
Apps where this isn't an issue
Twitter
Discord (AMOLED mode. This doesn't change the side menu which is still grey)
I'm attaching pictures comparing my first S20 with an M30s that also has a sAMOLED screen. The green hue is visible in the dialer app in the first pic, and how this green hue distorts greys is visible in the 2nd pic in the hamburger menu. The S20 becomes lighter towards the bottom whereas the M30s remains consistent for the most part.
My current S20 doesn't show this behavior in the Dialer app (it mostly seems pitch black) but in the other apps, I can marginally make out inconsistency, and in this case it becomes lighter from the right of the screen to the left. Even in Gboard with a true dark theme, some of the keys appear lighter than others because of this.
I'm gonna try to get this replaced from the store tomorrow, but good to know that someone else is facing the same issue.
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Had my s20 about a week, tested my screen with At tu tu apk. OK.
Sent from my SM-G981U using Tapatalk

sheik_yerbouti said:
Did you get yours replaced?
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No, I send it back to Samsung. Don't want to mess around with problems like this, when I spend that amount of money.

Gleetch said:
No, I send it back to Samsung. Don't want to mess around with problems like this, when I spend that amount of money.
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I agree. [emoji6]
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Having the same problem on the top half of the screen
Galaxy s20, exynos

So I just had a new software update (ATCH), and I'm happy to say this issue now seems much less pronounced! Still a slight discoloration under specific conditions, but definitely a significant reduction.

I can not confirm, that ATCH is making it any better on any of the devices I tried (Ultra, 2*plus). It made no difference at all, IMO.

corwin_amber said:
I can not confirm, that ATCH is making it any better on any of the devices I tried (Ultra, 2*plus). It made no difference at all, IMO.
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Same here, no difference after the update. Clearly a hardware issue unfortunately, otherwise all phones would have the green tint in the same spot

I might a spoken too soon, as once I enable "blue light filter" the problem returns full strength. Though the update has made certain backgrounds true amoled black (such as in settings and dialer), which reduces the problem in these apps.

Yes, I haven't noticed any change with this update, which I installed 5 days ago.

Hello, Yes i noted it from first date. It was clearly visible in Phone, Messages, Notification centre and settings app and every Google app in dark mode. After last update it's OK, but for example Samsung Health or Feedly side menu it's horrible. Unfortunately Samsung store is closed because od quarantine.
Odesláno z mého SM-G980F pomocí Tapatalk

It's apparently an issue with the devices manufactured on February-earlier. Most of the S20 devices made in March do not have the issue or have a less exacerbated green tint.

On number 5 I can say that it is finally bearable. It was manufactured on the second of march. I did not check with the rest. I only opened them, handled them delicately and checked them. All were terrible.

is this the problem with s20 exynos or s20 sd865?

Personally, I can only talk about Exynos. I would, however, suppose that it is through all kinds.