yashsingh1/xdaforums huggingface dataset:
[Galaxy S6 General] MJFox78:
my background lighting was slightly uneven, it was lighter and a little yellowish at the bottom

it started to bug the hell out of me so I went for a replacement... and this time I got a perfect one, the background lighting is perfectly even! :good:
[Galaxy S6 General] Dark5tar:
There's no such thing is "perfect". This unit still has a slightly uneven screen tone to it, (red top and green bottom), but it's distributed evenly across the screen that it's not as noticeable as the two previous units. It's the drawback of the AMOLED display, so i believe this unit is as good as it's going to get.
[Galaxy S6 General] reubenskelly1992:
The pink tint on mine is doing my head in
[Galaxy S6 General] superleeds27:
Had to open a resolution case with eBay but got there in the end.

Returning to the seller for a full refund. Will have a look at EE instore now
[Galaxy S6 General] Try4Ce:
This is what my display looks like as well, plus a pink border on the top.

Going for a replacement tomorrow.
[Galaxy S6 General] reubenskelly1992:
Mines slightly pink but not as bad as my first. But mine looked better than 7 others in shops I saw on display, they were all yellowish and creamy. Not sure what to do now. Any ideas??
[Galaxy S6 General] reubenskelly1992:
Thanks. Good anwser. I have a few days until my period to exchange ends. But ive noticed i only really see the tint on very low brightness setting. Sadly because of contract upgrade i dont have the time to wait around for its release . Htc m9 was a consideration but like you said this camera is too good to let go. And this thread does make us stare at our phones until we see something. Unless i get a perfext one its a very high chance i will get a worse one or other problems as you said if i exchange
[Galaxy S6 General] trenzterra:
I was wondering how phones work over at your side. Over here in Singapore, we have contracts too, but by legislation our phones are all unlocked. So I could basically sell my phone close to the off-contract price and purchase another phone.

On the flip side, we have very poor consumer rights. No exchange, etc.
[Galaxy S6 General] reubenskelly1992:
I could sell and get another. But i prefer to keep what i got under contract because not so covered if something breaks on the new one. Im keeping this phone. Gave the camera a proper run at a park on beautiful sunny day today. Outstanding!!!
[Galaxy S6 General] daffie:
A most excellent post...thank you! Very refreshing to read a well judged overview of our daily obsession with our gadgets ;) I for one am guilty as sin. Your post made me realize I am far too busy with my new S6...trying to get one with a 100% perfect screen, and no other defects as a downside.

I had the pink tint / horizontal lines on my 1st one, got a new one a couple days ago. The screen on the new one is much much better...in any case it has a more equal tone, albeit more green on the bottom, with reddish on the top. But it's minimal, and so much better than the screen on the 1st device.

So basically the last couple of days I have been staring at the screen of my new (2nd) S6, trying to decide whether or not I can live with this screen...as it is still (of course!) not perfect. Coming from a Note 4 with an absolute perfect screen, the S6 kinda dissapoints...or rather the tint distracts from an otherwise perfect screen (how freaking sharp it is!!!), as well as (like you said) all the features of this awesome device.

So WTF am I doing, getting all wound up over a screen that is not as perfect as I think it should be, and focusing this much on just this one fact, I can't hardly enjoy the phone for it's other awesome-ness...

Cheers for the wake-up call...I will now continue living my life spending my time on far more worthwhile stuff. :good:
[Galaxy S6 General] superleeds27:
Crazy, spending £500 plus on a device and accepting average display quality.
[Galaxy S6 General] daffie:
Nope... not average, just less than perfect. We expect too much in general. Time to get less obsessed.
[Galaxy S6 General] reubenskelly1992:
Yeah because other than a slight tint on whites. Which to me is just a down side of having amoled compared to lcd. The sharpness colours and blacks and brightness abilities are amazing
[Galaxy S6 General] vegetaleb:
So any youtube lcd screen test with plain white image is enough to detect the pink tint?

I am gonna buy the S6 in the coming days and I can try it before paying
[Galaxy S6 General] Towle:
No way are many of these just "less than perfect." A lot of them aren't even average. Being able to see your screen as two different colors from 10+ feet away is completely unacceptable for a $700+ phone. I like SAMOLED screens, but if Samsung isn't able to fix this issue, it might be time for Samsung to consider using something different.
[Galaxy S6 General] demonwind:
What has the world come to where a clear manufacturing defective can be considered average and okay.
[Galaxy S6 General] kishin14:
To each his own. My wife thinks I'm crazy and getting worked up over nothing. She clearly doesn't think it's a defect and would take my phone in a heartbeat. I suspect most non-OCD people, aka most people, would probably agree with her.

Anyway, I think trenzterra's last post was the best thing anyone's said on this thread. God, I'm so tired of feeling compelled to go into every phone shop I happen to come across to compare my display to the ones there. And for what? So I can make myself feel better for knowing that there are crappier screens than mine out there or make myself feel crappy for knowing there are better screens than mine out there. Besides, I simply have no desire to keep replacing my device until I find the elusive holy grail. I'm just going to enjoy my slightly less than perfect S6 in all its glory.
[Galaxy S6 General] segag:
I have the same issue with my phone. So went to the customer care right away. They too acknowledged the issue and have assured me a new phone today. Lets see if i see the same issues with the new phone today. I guess i will be going for a full refund if the second one has the same issues too. The store keeper kept trying to refute my claim, but i was adamant and made my point with the Samsung customer care folks.. Fingers crossed
[Galaxy S6 General] trenzterra:
Indeed. I'll let Samsung have their way this time. Maybe not two years later ;)

At least we know the screen we'll be getting two years later will be better than this screen anyway.

I'm not saying this problem is acceptable. I'm just saying we don't pay $500 just to make yourself more worried and upset. If you really want to highlight this to Samsung, well, then please write in to all review sites about this issue; only then will they wake up. I don't think exchanging solves the problem at the moment--even if you end up with a perfect unit now, you'll face the same issue some two years down the road if you buy another SAMOLED.

P.S. I had my friends and family look at the phone and they all didn't notice anything wrong.
[Galaxy S6 General] Towle:
For me, it resolved the issue. I exchanged my phone and got one with an evenly colored display. If my next Samsung has the issue, I'll exchange it again to get an evenly colored display [emoji14]. There are also different levels of this issue. My first S6, my wife (who always shakes her head at me for being picky about my phones) said that there is no way she'd use that phone. I got lucky getting one that I can't find any pink, but I was definitely willing to settle for something not as noticeable as the first.

I think a lot of the people who are judging those of us who exchanged our phones don't have as severe of a tint issue. Because IMO, a guy would need to be color blind to not be annoyed by the screen on my first S6.
[Galaxy S6 General] demonwind:
The phone shown in the first post is definitely return-worthy.
[Galaxy S6 General] trenzterra:
I guess it would be a non-issue if we could get our first replacement free of the tint. Unfortunately, most of us aren't that lucky... Now, stop tempting us! Heh. :)
[Galaxy S6 General] daffie:
I was specifically reffering to the screen quality on my own S6.
[Galaxy S6 General] trenzterra:
Hi guys. I was taking a photo of the S6 with my digital camera when I realised... Perhaps the PWM is the one causing these issues?

As you know, PWM controls the brightness on SAMOLED displays, and under a camera, you can easily see these flickers. Even at 30fps, you can see a few distinct bands, with one being noticeably pinker than the rest. The effect is also apparent when I do slow-mo at 400fps and 1200fps.

Anyway, at 30fps: https://www.youtube.com/watch?v=ZiPK3OaCaYw&feature=youtu.be

You can see one band is 'pinker' than the rest, and it moves down the screen. At 1200fps and 400fps, this effect is also apparent.

I did a comparison with my S4 as well. The S4 also has this issue (though I don't notice it with my bare eyes) under the camera, but the effect is less apparent. By the way, the pink effect is most apparent at low brightness.

Here's a video shot at high brightness, S4 on left and S6 on right:

https://www.youtube.com/watch?v=iHrmYs3ad5c&feature=youtu.be

And here's a shot on low brightness, S4 on left, S6 on right. You notice the S4 is more 'even' than the S6 even though both exhibit the pinkness:

https://youtu.be/XPCxH8gzdu0

Overall, I don't know if there's any relation with the issue we're experiencing and the PWM.
[Galaxy S6 General] vegetaleb:
Is the latest batch having this problem too or Samsung fixed it? I am gonna buy an S6 very very soon
[Galaxy S6 General] reubenskelly1992:
Its part of amoled. It will be there

But luck of the draw on how bad/noticable it is
[Galaxy S6 General] kLN93:
okay after 3 replacement units with the exact same problem, I decided to go to a Samsung repair centre. They ran some tests on the screen and said it's definitely not normal, they gave me another replacement unit and they checked it with me there. This unit is absolutely perfect, no tint whatsoever. Will upload photos when I get home
[Galaxy S6 General] trenzterra:
That's great. The Samsung service centre in Singapore was explicitly told that this was a normal problem and they're not supposed to give repairs. Hmm...

(A user managed to get a set repaired for dead pixel issues, though, but the new set has the same tint issue)
[Galaxy S6 General] killerz298:
I having the same exact issue with my new 2015 Dell XPS 13 matte screen. Everything is perfect with it except the mid upper left hand side of the screen has a VERY faint round darkish discoloration a little bigger than a quarter that is only visible on white backgrounds and usually only when the screen is scrolling. I'm considering sending it back because I know it is there and I can't not look at it lololol Most people would find that insane.
[Galaxy S6 General] demonwind:
What is PWM? And does this mean the problem could be fixed via firmware update?
[Galaxy S6 General] trenzterra:
Pwm is the mechanism that controls the brightness on amoled displays. Basically since amoled has no back light it controls the on/off state of the amoled to give its desires brightness.

Not sure if this can be fixed with Pwm though, especially since Samsung doesn't seem to be acknowledge this issue as a problem at all. And I'm not even sure if the problem we are experiencing is related to the pwm.

---------- Post added at 02:49 AM ---------- Previous post was at 02:47 AM ----------

http://xdaforums.com/note-4/general/screen-flicker-pwm-t2905778

You can check this thread out to find out more about pwm. Nothing mentioned about tints though. Although it seems the note 4 and s6 seems to suffer 'more' from this tint issue, perhaps it is due to the pwm which has changed in these two phones apparently.
[Galaxy S6 General] demonwind:
But based on the video it seems you can turn on and off the pink tint.
[Galaxy S6 General] beaverslayer:
A white screen came up on my Vizeo led TV today and there was splotches all over it. Big grey splotch in the upper left and yellow in the middle. When not displaying a solid white background it has a stunning HD display. It's 2 years old and I have never noticed it. Wonder if Samsung will exchange it.:D If you can't see it during NORMAL use it ain't a problem. Psychology can be a powerful weapon when our minds are left unchecked.
[Galaxy S6 General] trenzterra:
Possibly but I'm not sure if there still is a pink tint even without the lines. The camera can't capture the pink tint that clearly. But the diagonalness of the pwm could perhaps suggest why we see it as a diagonal gradient. Idk. Just a hypothesis.

But one thing I can't figure out: if the thing is scanning from bottom to up, why do we perceive the tint at just one place?
[Galaxy S6 General] demonwind:
You're right white screen on tv is not common but on phone many things are white background like web browser and settings menu, etc. Android OS 5.0 is basically all white now instead of black like before.
[Galaxy S6 General] vegetaleb:
My Samsung LED TV has very slight pinkish whites out of the box, specially if looked at angles, I can however reach near perfect whites thanks to calibration.

If sammy was given a screen calibration app like sony, perhaps most of the pink tint screen on S6 can be fixed
[Galaxy S6 General] reubenskelly1992:
That would be sweet
[Galaxy S6 General] trenzterra:
Even better if it would allow some gradient manipulation. For example, using the gradient generator in Display Test, I notice if I move the slider at the top left by just a little, the display ends up being perfectly even. If Samsung can somehow incorporate this without affecting battery life, it would be great.
[Galaxy S6 General] reubenskelly1992:
So really the ones with slight tint can be fixed by software
[Galaxy S6 General] trenzterra:
I guess those with a gradiented tints I guess. Spot tints would be harder to fix.

Anyway, been using my latest set for a few days now. I don't know if my current set is worst or better than the last--sometimes I notice it quite obviously, but other times I don't even notice it at all. How our eyes plays tricks on us...
[Galaxy S6 General] reubenskelly1992:
Im the same. Mine is slightly pink in places. Some days dont notice others thatz all im staring at all day

Think im gonna go in to my local store monday. Then i can compare and ask to see the replacement
[Galaxy S6 General] trenzterra:
Anyway if you guys are curious about the full extent of your uneven screen tint... Download the following image and open it in gallery. Set brightness to about 10 to 20 percent and do so in a dark room. Take some time to acclimatize. The pink patches you normally see will appear noticeably darker than the rest. Mine looks really bad in the dark, though of course we normally won't see this issue in daily usage.

In comparison, my well worn s4 shows lots of lines on the background, but on the bright side it appears more even.
[Galaxy S6 General] trenzterra:
Here's how it looks... Pretty shocking.

Since this seems to be a brightness issue... Maybe one way to solve it is to wear out the other parts of the screen. Maybe load a white gradient image and show it full blast for one day. But that may just ruin the whole screen though.
[Galaxy S6 General] demonwind:
This is ridiculous. I finally got a phone without scratches but this one has even worse pink tint because it's near the middle of screen now instead of bottom corner. I'm gonna wait another 14 days and if Samsung doesn't acknowledge this issue I'm just gonna pay the restocking fee and get a refund.

Upon further inspection it appears that my phone's entire left side is pinker than it should be, and the right side is actually yellower than it should be. My phone is Two-Face.
[Galaxy S6 General] NeoAznMan:
Do you happen to have a manufacturing date on the phone you received?
[Galaxy S6 General] trenzterra:
Mine is the exact same, though it feels really minor nowadays

Anyway you can try loading this image at full blast for about 30mins. Seems to help even out the tone a little.

P. S. I assume you are gonna return it anyway so I'm not responsible for anything.
[Galaxy S6 General] trenzterra:
Either of these two. Remember to rotate accordingly.

To custom make one for your device, take a picture of your phone's screen using the grey background provided above. Then, with the image capture, colour the black portions black and the non-black portions white. My idea is that it would burn it the non-black portions to the same level as the black portions.
[Galaxy S6 General] trenzterra:
When is yours? By poor luck, all three of my phones are manufactured 2014-03-14 in Vietnam
[Galaxy S6 General] NeoAznMan:
Mine was manufactured around 3-27-2015 at Vietnam.
[Galaxy S6 General] trenzterra:
Same tint issue? Actually, I realise, to see the full extent of the tint, you can also snap a white bg picture, and use some software like IrfanView and adjust the contrast/gamma/saturation.

Since I have had 3 phones, here are the images. The dark/pink areas are the pink tints and the green areas are the green/normal tints.

Phone 1:

Phone 2:

White background:

Browser:

Phone 3 (Current):

White Background:

Browser:

For the fun of it, my old Galaxy S4:

So, there you have it. Three ****ty displays and a pretty good one from the Galaxy S4.

Those who've got a perfect screen, please post yours as well!
[Galaxy S6 General] mandroid717:
Samnsung's response..... i believe if you have the edge or not it's same for all amoled screens as stated.

http://www.samsung.com/za/support/skp/faq/1076253
[Galaxy S6 General] trenzterra:
"But when viewing directly from the front or side the colour will be as expected."

Unfortunately, we get these issues when viewing directly from the front of the screen.
[Galaxy S6 General] NeoAznMan:
It mentioned nothing about purple tint though.
[Galaxy S6 General] reubenskelly1992:
Or pink
[Galaxy S6 General] trenzterra:
Sadly, it seems burning in a particular colour probably won't help.

I tried a Red, Blue, Cyan, Magenta, Yellow, Green solid background, and used my camera to snap a shot, and using IrfanView, adjusted the colours. In ALL of the images, the areas that seemingly appear pink on a white bg are darker than the other areas.

I guess it's just an evolution of the infamous mura effect in AMOLEDs... just that it appears to take on a pink tint on white bgs now.
[Galaxy S6 General] Speed_Br:
Well, i had an S4 and now S5, you all are saying this screen issue happens to all amoled. What app or kind of screen test are you doing to see this?

Im gonna buy a S6 next week, and probably would like to run the test still inside the store in front of the sales man.
[Galaxy S6 General] demonwind:
What the hell how can they get away with this??
[Galaxy S6 General] reubenskelly1992:
I know its not as good the s6 but so tempted to get the m9. All i worry is the pathetic quality of this phones screen:(
[Galaxy S6 General] trenzterra:
It's hard to see it under bright lighting, which is the lighting that is in virtually every store though. Try setting display mode to basic and brightness low.

Get the m9 then if it makes you feel better
[Galaxy S6 General] trenzterra:
Did the contrasted image for you below.
[Galaxy S6 General] superleeds27:
Went in to EE today.

Okay. Screen looks fine to me! Looks a lot lot better than the previous one I had.

Build date 5/4/2015 - Vietnam
[Galaxy S6 General] trenzterra:
Great. Is it possible for you to take a photo of the screen on a white background? I think we need some hope of a 'perfect' screen for some of us...
[Galaxy S6 General] superleeds27:
I'm not saying its perfect, I don't think there is one! Just a lot better than the one I had.

I'll try n get pics tomorrow
[Galaxy S6 General] mandroid717:
Has anybody tried screen adjuster from the Play Store
[Galaxy S6 General] demonwind:
Does it let you adjust the screen temperature on certain areas of the screen only? Most apps only do so for the whole screen.

I think it could help mask the problem if so.
[Galaxy S6 General] mandroid717:
Not a clue. Just wondering if anybody has tried it. I've heard good things.
[Galaxy S6 General] Bass-15:
​

Try using screen equaliser. I use it and it masks the pink tint at the bottom of my screen. It was developed to fix the yellow tint issue of the oneplus one. Also it's awesome because you can choose an area you want to mask and you can mask in a gradient fashion.
[Galaxy S6 General] trenzterra:
Tried it before but the gradient doesn't seem to work on the S6?

EDIT: It works now, and wow, it works well.

EDIT2: It screws up the black though

EDIT3: Wow. I tried it again, with 95% transparency and using a green gradient on the left side. It works way better than expected and my screen is really uniform now, with blacks at an acceptable level too!

If only Samsung could build this inside this firmware...
[Galaxy S6 General] Hawke84:
That app is amazing thank u.

What colour best counteracts pink?
[Galaxy S6 General] trenzterra:
Use green.
[Galaxy S6 General] Bass-15:
This is my setting for a pink hue at the bottom 1/3 of my screen. You welcome :)
[Galaxy S6 General] kLN93:
Can you take pictures of your screen on a white background before and after using that app please?
[Galaxy S6 General] Bass-15:
Hi I'm struggling to show a change on camera. But believe me you will notice it in person. Just try it out. Il try get a pic later tonight in the dark
[Galaxy S6 General] Hawke84:
App could do with hex values.
[Galaxy S6 General] superleeds27:
Agreed!
[Galaxy S6 General] demonwind:
Seems like a decent app. However needs a lot of manual adjusting to get it right. And no option to hand-draw the gradient, it's only top-bottom or left-right. If your phone has corners or diagonal gradient it doesn't work. Maybe we should contact the author and see if he can add those features. I would pay for this app.
[Galaxy S6 General] Bass-15:
I'm not sure if you can see, it's hard to take a pic lol. But my screen has a pink hue more so at the bottom left in the 1st pic.
[Galaxy S6 General] trenzterra:
Or better still, email Samsung to see if they can incorporate this in the firmware.
[Galaxy S6 General] superleeds27:
Haha, good luck with that!

They have a colour correction setting in accessibility, dunno if it does anything though!
[Galaxy S6 General] demonwind:
This app does help with uneven whites but it makes dark colors worse. It'd be cool if the app auto-detects the screen and changes based on that.
[Galaxy S6 General] trenzterra:
I know this might be placebo.... But I noticed enough of a difference to want to post it here.

Instead of using a compensatory colour, I instead reinforced the tint by going full red on the pink tint areas and full green on the green tint areas, using the screen equalizer app. I was hoping this would help age the offending subpixels to make the tint less subtle. So one side of the screen is green or red gradient , and the other side would be black. Seems to have tempered the tint somewhat!
[Galaxy S6 General] demonwind:
How did you use two different colors?
[Galaxy S6 General] trenzterra:
I set a green gradient to fill half the screen on screen equaliser then I load the other colour using the display tester app
[Galaxy S6 General] demonwind:
Well at least this is proof that the tint can be masked via software.
[Galaxy S6 General] blek42:
Replaced an S6 with pink bottom today. No questions asked. Replacement is perfect. Tmobile rocks
[Galaxy S6 General] NeoAznMan:
Can we get pictures please?
[Galaxy S6 General] blek42:
No picture available. It was minor but noticeable to me. Probably wouldn't show well in the picture. Top 2/3 of screen was normal cool temperature color, bottom third had subtle warm pink whites.

To best demonstrate the problem to the tmobile guy, I entered *#0*# into dialer to bring up the test screen. The grey boxes make it very easy to see the difference in color tone and warmth. I also held the screen horizontal which also helps the eye notice the difference on either edge of the screen. This was all done using AMOLED basic setting.

They were super cool and immediately got me a replacement.