Develop Bugs

Green tint?

Just got my VZW galaxy nexus, and im loving it so far, but have noticed something odd: toward the top of the screen (about 1/4 of the way down from the top) there seems to be a very slight green tint, noticeable only when looking at a dark background (like the settings menu).
It's kind of hard to explain, does anyone else have something similar on their phones? Is this normal for amoled screens or should I ask for a replacement phone?

i believe it has to do with it being a pentile screen... well, 'HD' pentile, but still..
i'd say if you try an exchange, make sure you the test the other in store first.

can anyone with a galaxy nexus please post a photo of their phone on the settings menu? (scroll all the way down)

melterx12 said:
can anyone with a galaxy nexus please post a photo of their phone on the settings menu? (scroll all the way down)
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Pretty sure the setting menu is a background gradient with an intended color shift.
But yeah, mine has a blueish/greenish hue if I tilt the phone away or towards me in portrait mode. Straight-on, I don't notice anything.

yeah i am talking about viewing straight on

mine has this greenish tint slightly at the top right screen...
that settings menu then scroll all the way down is normal.. the color is not as dark as the top. I'm seeing greenish tint when on white background

I have a very light greenish tint on the right side of the phone on white backgrounds with text when at low/automatic brightness. The green goes away when I bump brightness to 40%+.
Did you try that?
Oddly, when I ran pixel checker, the pure white background has no green tint to it at all.

Yeah, at low brightness I see a tint/haze but at full brightness, everything looks beautiful.

Welcome to the world of pentile.

I see the same green tint on my screen. I thought it was normal, but I compared it to another unit today and saw that my display was both dimmer at the same brightness level and had a greenish cast and different color temperature than the unit I was comparing it to. I'm not sure if this is within the normal variance for these displays, but my phone certainly looks worse to me than the one I compared it to.
Both units also showed a green/blue tint when viewed off axis but with greater discoloration on mine. The second unit showed almost no discernible tint when viewing a white screen straight on unlike mine.
melterx12 said:
Just got my VZW galaxy nexus, and im loving it so far, but have noticed something odd: toward the top of the screen (about 1/4 of the way down from the top) there seems to be a very slight green tint, noticeable only when looking at a dark background (like the settings menu).
It's kind of hard to explain, does anyone else have something similar on their phones? Is this normal for amoled screens or should I ask for a replacement phone?
Click to expand...
Click to collapse

i have the same problem. Sometimes (usually after a power down and restart) my entire screen is very dark and has a, very obvious, green tint to it. I compared my phone to my girlfriends at the same display setting and the tint is very obvious (especially when i'm viewing menu, text messages, browser). When i adjust the brightness it seems to make it less obvious, but still there. However after certain power down and restart this "green tint" seems to 'go away' only to either gradually re-appear or just happen when my phone self adjusts to "automatic brightness" setting.
p.s. my phone also, had another minor issue of random re-start when listening to music (via google music) and adjusting the sound effects option. After that restart my phones display was significantly tinted and dark. Weird, Either way getting a replacement unit tomorrow.

Mine has a very slight green tint on the left hand side of the screen when at the lowest brightness and viewing a white background.
I normally have the brightness bumped up a bit, but it still bugs me when I have it low
EDIT: Checked pixel checker, has the green tint. I can definitely see it on the keyboard as I'm typing this though

I took my unit in to Verizon today for an exchange. New one doesn't have as significant of color shifting or banding issues.

crazeco said:
I took my unit in to Verizon today for an exchange. New one doesn't have as significant of color shifting or banding issues.
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yeah i got mine replaced the next day, all good now. No green tint, reduced banding, and much better viewing angles (the first one heavily tinted green or pink colors when viewing it from the right or left side, respectively)

Alright, got a replacement today.
No green tint that I can see, almost no banding and the colors don't change like, at all when I tilt the phone.
Now my nexus truly is perfect
Sent from my Galaxy Nexus using XDA App

DoctorSasquatch said:
Alright, got a replacement today.
No green tint that I can see, almost no banding and the colors don't change like, at all when I tilt the phone.
Now my nexus truly is perfect
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Sorry, I find this very hard to believe. *ALL* pentile AMOLEDs change colours like crazy when you look at them at a sharp angle. It's a characteristic trait of this kind of display.
Pics from various angles or it didn't happen. ;-)

Valynor said:
Sorry, I find this very hard to believe. *ALL* pentile AMOLEDs change colours like crazy when you look at them at a sharp angle. It's a characteristic trait of this kind of display.
Pics from various angles or it didn't happen. ;-)
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Yeah, I was exaggerating, but compared to how bad it was with the other one its crazy. Very less noticeable than my first one
Sent from my Galaxy Nexus using XDA App

[Q] Pink tint on lower half of screen? Normal?

Hey everyone,
I got my black AT&T Note 4 earlier today. I noticed the lower half of the screen is slightly darker, and has a slight pinkish tint on a white screen.
I do notice it in some apps, like Kindle when readinga book. Top of screen is slightly brighter, and when background is white there's a very slight pink tint.
Is that normal? Or should brightness be uniform and no tint?
EDIT: I added a photo. It's not a good photo but you can see how one side is tinted differently. In the photo the brighter top looks greenish but in real life it's not green. You can also the slight pinkish tint in the bottom half, which is the left side of the photo.

I wouldn't want to comment based on the image you uploaded directly since how a camera captures a digital display is much different than what the naked eye will see. If the picture on the panel is not consistent and appears polarized in any way, I would consider that to be faulty. Get it replaced.

Galaxy Note 4 (pink tint lower screen)
Hi there,
I have also noticed a pink tint on the lower half of the screen on new Samsung Galaxy Note 4.
As i intend to do a lot of drawing on this device the tint is unacceptable.
I wonder if there is a way to calibrate the display?

I had this issue with my Galaxy S3 display. I had at&t exchange it.

Have this same issue on my Note 4. Posted some pics over in the thread on this topic for the Note 3 before I thought to check here. Basically there's a brightness and gamma gradient from top to bottom. The top half is perfect and the bottom half gradually fades to a point where you lose the first 8-9 squares on the lagom.nl black level test.
This one emphasizes the black crush, which can be visible in video content on a dark screen (and makes dark colored backgrounds fade to black towards the bottom):
And here's one on a white background. At first it seems like a white point issue (which I would tolerate since it's common on IPS as well), but it's a brightness gradient:
Between this and the fact that AT&T disabled the slider for auto brightness I'm a little frustrated with this supposed best smartphone display ever (I realize this second issue isn't Samsung's fault, but the auto brightness is unusable without that feature). I bought the phone at Best Buy which is mostly out of stock right now so an exchange isn't likely, assuming they even take this seriously as an issue.

My note 4 does not display this issue.

No issues here. Display looks very consistent.

mkalbarc said:
My note 4 does not display this issue.
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Have you tried a dark background in a dark room? For me it wasn't that obvious until I did this (was messing around in Sketchbook). If the majority of screens are better than mine I'll definitely be trying to get a replacement as this is bothering me.
I just installed Lux to resolve my backlight issue and its settings menu background fades nearly entirely to black at the bottom.
*Edit: So far it sounds like this is an anomaly. You would expect places like Anandtech to report on it if they'd seen that amount of variation. I'm going to have a good time trying to convince someone at BB that this is a real defect though.

Erica Griffin talks about this issue in her Note 4 review, around the 20 min mark: https://www.youtube.com/watch?v=-OyNWrQJzMY

I got a replacement and it's perfect. No pink tint.
So, if you have the tint return it. Not all Note 4s are like that.

msk said:
Erica Griffin talks about this issue in her Note 4 review, around the 20 min mark: https://www.youtube.com/watch?v=-OyNWrQJzMY
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Thanks, that was quite helpful. I think in general it's easier to trust reviews on retail-purchased devices over mainstream reviews with PR department selected units.
I went to BB today and looked at the display units. All perfect, but then that's not surprising (every company gives their display/review units a second QC pass, even Apple). I'll probably head to the only BB in the area that has units tomorrow and see if I can do an exchange. As long as they don't make me sign one of those "no more returns" agreements I've heard about I'm willing to take another shot in the display lottery.
TapperP said:
I got a replacement and it's perfect. No pink tint.
So, if you have the tint return it. Not all Note 4s are like that.
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Good to hear! I'll post my results after my exchange attempt tomorrow. Aside from the gradient I am impressed with the display. Not as bright as LCD in daylight, but I was drawing on a black BG last night and noticed that it has deeper blacks than my Pioneer plasma.

Atomic Walrus said:
Good to hear! I'll post my results after my exchange attempt tomorrow. Aside from the gradient I am impressed with the display. Not as bright as LCD in daylight, but I was drawing on a black BG last night and noticed that it has deeper blacks than my Pioneer plasma.
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Click to collapse
Fingers crossed for you to get a nice one like mine.
Yeah, the blacks and colors are amazing on the Note 4. The whites are not as bright as the iPhone 6+, but they are fine and way better than whites on my Note 2. In all other respects the Note 4 screen is overall better than even iPhone 6+'s excellent LCD.
One minor disappointment is the very high resolution has made some emulators dog slow as they attempt to render at full resolution, i.e. PPSSPP and ePSXe using ogle renderer. Hoping the devs find a workaround, maybe rendering at half or quarter rest instead - that would still be higher rest than my Note 2 at full rest. :laugh:

What's the color of your device? Anyone have this problem in the white version?

my note 4 has pink tint
I have the same problem on my Verizon white note 4 but on top half of display. Replacement should arrive by Friday :/

You can replicate this by looking at the screen at an extreme angle, obviously the ones that see green and purple straight on are screen defects.

I have a white version and whites are perfect and too bright at high setting. I keep mine half way. The whites are better IMHO than the iphones. The colors more vibrant and, the sharpness is ridiculously sharp. I dont see how they can improve it. I only thing there should be a waynto adjust the color saturation, because basic mode doesnt do much on mine.

My Note 4 has the same issue. It almost looks like the while balance differs from top to bottom, but it is really the brightness that is different.
This is a photo of my Note 4 showing a solid colored image at #030303 (very close to black). It shows how different the pixels in the bottom and in the top emit light.
Image can be seen at 1x.com/tmp/uniformity_note4.jpg
Looks like crap.
/ j

I though i had ocd with phones but that just doesnt bother me in the slightest. Cant really tell unless you force yourself

http://forum.xda-developers.com/showthread.php?p=56562683

similar problem
I have a similar issue, though mine is brighter on the right side than it is on the left. Very noticeable with dark background in lower light situations as someone else mentioned.

Display color

HI, my display is darker on the right side if I put a gray color in fullscreen with low brightness. I'm using swift dark substratum. OnePlus told me that it is a defect of all amoled. Does it happen to you too? sorry for my English. See attachments. Thank you.

Mine is noticably darker in the lower part of the screen. I've read tons of reviews and stopped worrying about it -- the AMOLED displays can't show consistent color by nature.

I had this problem on my OP3 but I left it too long thinking I'd get used to it so I couldn't return for a refund or exchange. Don't leave it too long and get yourself a refund or exchange if possible. That's cleary a defective screen.
Fortunately my new 5T is so much better. And is pretty even with the screen uniformity.

I have this issue but only at certain brightness levels, fortunately it's very minor to the point where I can't notice it unless I'm actively looking for it

I've had 4. All the same uneven tints. But but different from left from right which is off putting when reading or looking at content with white or grey backgrounds. Sending it back trying something else

Green tint on dark background low brightness

Man I hate OLED lottery.
Does anyone else have this issue? It's something similar to this:
https://forum.xda-developers.com/oneplus-7t/help/green-tint-issue-oneplus-7t-t3986231
I'm debating if I should exchange it or just keep it, it's only noticeable at low brightness

vwite said:
Man I hate OLED lottery.
Does anyone else have this issue? It's something similar to this:
https://forum.xda-developers.com/oneplus-7t/help/green-tint-issue-oneplus-7t-t3986231
I'm debating if I should exchange it or just keep it, it's only noticeable at leow brightness
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I have the same effect in original Youtube app. It is just a bad background gradient in the application. Don´t blame the phone....
When I open Messenger with black background and grey status bar at the top of the app in the same brightness level, there is no greenish effect.

I am also having uniformity issues. Very noticeable, unfortunately. As there are no 512GB Ultras available anyway ATM, O will just have to live with it for the moment. Maybe I get used to it...

buddy66 said:
I have the same effect in original Youtube app. It is just a bad background gradient in the application. Don´t blame the phone....
When I open Messenger with black background and grey status bar at the top of the app in the same brightness level, there is no greenish effect.
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mm weird, I see it in every single app with dark grey background, even in settings (w/Dark mode on), the bleeding is a lot bigger from the top right corner.
EDIT: Just checked the messenger app (FB messenger) and background is completely black so most pixels are off except for the letters and gray search bar but bleeding wouldn't be noticeable.

vwite said:
mm weird, I see it in every single app with dark grey background, even in settings (w/Dark mode on), the bleeding is a lot bigger from the top right corner.
EDIT: Just checked the messenger app (FB messenger) and background is completely black so most pixels are off except for the letters and gray search bar but bleeding wouldn't be noticeable.
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I've just checked it with Gmail since it is also a Google application and you can notice the bleed when the lights in the room are turned on and I try to cover the top of the phone to see it. After turning the lights off, whole app is equally gray so in my opinion it is just an optical illusion. If I recall well the AMOLED displays use some kind of dimming (tinkering with the frequency) in order to reach a lower point of the brightness that is not noticeable for human eye. Probably this can be seen when covering a gray part of Google apps in a room that has another not so bright light source.

buddy66 said:
I've just checked it with Gmail since it is also a Google application and you can notice the bleed when the lights in the room are turned on and I try to cover the top of the phone to see it. After turning the lights off, whole app is equally gray so in my opinion it is just an optical illusion. If I recall well the AMOLED displays use some kind of dimming (tinkering with the frequency) in order to reach a lower point of the brightness that is not noticeable for human eye. Probably this can be seen when covering a gray part of Google apps in a room that has another not so bright light source.
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I made a picture. It is showing a 5% gray test pic and supposed to be uniform. It is easy to see and I was kind of shocked when instantly noticing it the first time I was using it in the dark. Settings and many parts of the dark one UI are using grays in that range.
Anybody else? If it is rare, it will be worth pushing for an exchange.

corwin_amber said:
I made a picture. It is showing a 5% gray test pic and supposed to be uniform. It is easy to see and I was kind of shocked when instantly noticing it the first time I was using it in the dark. Settings and many parts of the dark one UI are using grays in that range.
Anybody else? If it is rare, it will be worth pushing for an exchange.
Click to expand...
Click to collapse
I did the same test, I'm attaching a picture of my Note 10+ and the S20 Ultra side by side. Uniformity seems a lot better on the note 10+, however on white background the Note 10+ turns more red when I slightly tilt it while the S20 Ultra seems to shift colors a lot less and still white overall.
Still not sure if it's worth the hassle to return.

Ok, the fact, that it looks very much like mine can be good and bad ?
Could you please check, if is different at 60Hz? For me, it is clearly different.

corwin_amber said:
Ok, the fact, that it looks very much like mine can be good and bad
Could you please check, if is different at 60Hz? For me, it is clearly different.
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Oh wow, you're right! I set it to 60 hz and QHD+ and uniformity on the gray test got noticeable better, still some green on top right corner and around the punch hole but noticeable less. I love reaaally 120 hz during normal use though.

Thanks for confirming, same here. I wonder, if this is something, that can be fixed in software... And if the rumoured 'dynamic refresh raze' update might change things.
Could please note people check their Ultras displays?

Same here with my s20 more visible at 12hz refresh rate with dark theme

Damn it, ok, then I really hope that it is fixable... Weird.
I am using smiled displays since Symbian Nokias, never had one, where I noticed it so much.

I remember all the Mate 20 Pros with LG screen had this issue buy way worse in some cases
https://www.google.com/search?q=mat...JtXpfSDsL9sQXomrbgDQ&rlz=1C1CHBF_enUS731US731
In some cases they were normal during the first days but the problem evolved until the display was unsusable in low light conditions, hope the same won't happen to our phone during the next weeks.

yeah I don`t have this issue I did the screen test in Gmail and download the app that does all the different colors including gray, at the lowest brightness and at other levels of brightness at 120hz its all uniform.

2003vstrom said:
yeah I don`t have this issue I did the screen test in Gmail and download the app that does all the different colors including gray, at the lowest brightness and at other levels of brightness at 120hz its all uniform.
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Mine is most noticeable at around 35-40% brightness and with 120 hz but still noticeable with 60 hz while on the note 10+ I can't see any green at all at any level of brightness. I think it's a quality issue and variation of OLED screens but not sure if it would count as "defective". Samsung doesn't do exchanges so it would be a pain to return everything and recorder without the promotions and reservation/pre-order credits. Ugh not sure what to do yet.
EDIT: Btw I tested with gmail and didn't notice the green in the app since it's light gray but as soon as I drop down the notification panel (w/dark mode on) the green is immediately noticeable. It's only with very dark gray that lookd almost black which is what Samsung use for all their apps (settings, calculator, messages, etc.) when dark mode is on. I wish they used true black so pixels were completely off like with facebook messenger.

I am also unsure what to do. I have to say, however, that this is the device that gives me the most uncertainty ever. For this opportunity price I want a good to perfect display. @vwite Don't you think that the dark grays are too bright as well? It wouldn't be so visible otherwhise. I also sent my picture to the 'write the CEO' address and a pledge to be aware of the issue:
https://www.samsung.com/uk/info/contactus/email-the-ceo/ (example: UK)
I will try checking in a store, which will be totally hard because of the light there. Maybe I will just order another one... Or a plus ?

Made another picture 'for the CEO' :silly: and will also attach the source image I showed on screen. To replicate:
- 25% brightness
- Show 5% picture in a dark room
- made picture with an S10+ on full auto

corwin_amber said:
Made another picture 'for the CEO' :silly: and will also attach the source image I showed on screen. To replicate:
- 25% brightness
- Show 5% picture in a dark room
- made picture with an S10+ on full auto
Click to expand...
Click to collapse
Thanks! Please let me know what they say.

Actually I ordered an S20+ now and will most likely just give the Ultra back in the first 2 weeks. Yes, it is a pain, but I really can not stand the screen as is. I am even putting it in its box before I have the plus and using my S10+ in the meantime - the green tint is driving me a little nuts.
I am having a hard time justifying the thickness and weight for a feature I hardly use (amazing zoom) while having an inferior main camera at the same time (focus issues).

i noticed this issue too on my 20+
it seems to be worse some days less bad other days
it also is very dependable on how much ambient light is around - eg is much more noticeable in dark rooms
and yes is an issue with Samsung dark mode that isn't true black but some dark greyish
other then this - all other colours look amazing = so not sure if the screen itself is defective
I do hope there will be a software update that will fix this or make it less visible

Subtle purple edge tint in very low light? (S20+)

Anybody else noticing an extremely subtle light purple-ish haze on the edges of extremely low light photos - i.e. where the dark/black areas are in a low light photo around the edges?
It's subtle. It's a reach to see it at times. But this is an expensive phone, so I'm going to nitpick... It reminds me of the old issues with the HTC One M7 and some older Motorola devices, though on a much more subtle level. I'm probably crazy, but I know I'm seeing it at times.
Snapdragon S20+ here (Verizon variant)

Ok, so I realize it would've helped my first post with some photos and additional info. Please keep in mind, I love the camera on this phone 90% of the time, but this 10% is an issue that reminds me of the old days (per my first post). I have two sets of photos... First are the originals, uploaded, and added into Photoshop with a black "frame" to help you see the haze better. The second set is a photo from my iPhone of what those photos look like on my S20's screen. Reality lies somewhere in between the two. The second set over-emphasizes more than what I see on the screen, and the first set mutes it too much. These photos are night mode photos, which I realized after my first post helps to accentuate and show the issue.
Ultimately the problem seems to be how the software and/or sensor are handling the extremes when you have a bright light source as the focal point, and dark outer edges (again, reminiscent of oooold devices). Anyway, the photos are attached. Hopefully that help clarifies it a bit more. It's nitpicky, as there aren't many scenarios where this would come up. But it's a $1k+ phone... I feel like I'm allowed to be nitpicky.

Is it always on the left side of the phone screen? i.e. always on the top of the phone? or does it change to either side when you rotate the phone (could be on the top or bottom sides)? I have not observed this purple thint issue, but your third photo shows that it is extremely bad.

Sleepycat3 said:
Is it always on the left side of the phone screen? i.e. always on the top of the phone? or does it change to either side when you rotate the phone (could be on the top or bottom sides)? I have not observed this purple thint issue, but your third photo shows that it is extremely bad.
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No, it's more pronounced on the left there due to the lighting in that situation. But if you look at the fourth picture you can see it's relatively even on both sides where things start to darken.

jntdroid said:
No, it's more pronounced on the left there due to the lighting in that situation. But if you look at the fourth picture you can see it's relatively even on both sides where things start to darken.
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I'm not saying it's normal, I too suffered from the HTC M7 syndrome but in those specific photos, is the purple haze coming from a TV light on your left? Is there any tv screen running when you took the pictures?

Tabtoub said:
I'm not saying it's normal, I too suffered from the HTC M7 syndrome but in those specific photos, is the purple haze coming from a TV light on your left? Is there any tv screen running when you took the pictures?
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No - no TV's on anywhere. The purple haze is coming from the especially dark areas.

Just checked on mine s20+ exynos, other than very minor green tint no issues, if i were you i would replace it asap - something isnt right

Klopers33 said:
Just checked on mine s20+ exynos, other than very minor green tint no issues, if i were you i would replace it asap - something isnt right
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I bought an unlocked S20 (+ was too large for me anyway) and tested it last night in the exact same spot and exact same scenario, and very little haze at all with no purple. I can see what it's trying to do - it's trying to lighten up those darker areas, but for some reason on that S20+ it was making it purple-ish and just plane ugly. It doesn't look "great" on the regular S20, but it's at least not purple and clearly just trying to lighten it up. S20+ is already on its way back for the return.