yashsingh1/xdaforums huggingface dataset:
[Galaxy S6 General] Spybreak:
Bad news.

I tried both the S6 and the S6 edge at a store last night. Both of them still have a slight gradient on the screen when viewing full-white or grey images. Especially on medium to low brightness. The the color is not consistent from the top to the bottom, theres a slight temperature shift. Sometimes to blueish, others to greenish.

I checked on 3 units of each kind and every unit had a the gradient to a different degree, some worse than others. Its not as bad as it was on the S5 and Note 4, but it seems to be an issue with AMOLED that has still not been solved. I don't think anyone will notice in normal use, but you can definitely see it when an app has a full dark grey UI.
[Galaxy S6 General] daffie:
I personally don't care about that. My Note4 had that and I have never been bothered by it...
[Galaxy S6 General] derWolf_:
Every AMOLED display I've played with had this problem. With the time you learn to get use to it, an now I don't even notice it anymore (even though my current phone does not have an AMOLED display). It isn't fault of the phone, really, it is just a drawback of the technology used.
[Galaxy S6 General] megagodx:
I'm a bit disappointed with the display at this point. Not because of it is a poor quality, but the limitations it still possesses from the first generation of QHD displays on the S5 LTE-A and Note 4. I was expecting them to improve brightness on all types of content [including white] and energy efficiency. But it seems they're almost identical. They can improve the efficiency with mixed colored content all they want, but if they can't do so with white [hence the poor brightness] then I see myself trying a high-quality LCD display such as the iPhone 6s [when it comes out] - most Internet content is rendered in white after all. Android's major design ethos are based around white elements as well.

They either need to make notable changes with the Note 5 and S7 in this regard, or bring AMOLEDs to their end of premature life and focus on developing and researching QLEDs [more brighter, accurate, saturated, and energy efficient display technology, the next evolution)
[Galaxy S6 General] Lodix:
They have improved, just don't ask for huge jumps in a short period of time.

And they have pretty decent web browsing battery life, not the best.
[Galaxy S6 General] tmac31:
i have note4 and 6 plus. screen is bright enough. in autoboost mod i find it more readable than 6plus. in full white screen efficency its not bad too according to displaymate. since you dont look white only screens it should be efficent than most of lcds
[Galaxy S6 General] vegetaleb:
2 questions:

-Do you think screen burnins can still occur like on older amoled?

-About the Edge S6, is it 5.1" including the edges or it would be 5.1 + 0.2?
[Galaxy S6 General] Poetique:
I've wondered this as well, though at a glance, it seems that the 5'1" includes the edges leading to a slightly smaller overall form factor Vs the S6.
[Galaxy S6 General] derWolf_:
1) The Note 4 burns in, so I believe the S6 will suffer the same fate. The technology is hardly different between the two.

2) No, the screen + the edges is 5.1"
[Galaxy S6 General] vegetaleb:
You got screen burnins on your N4? I red that people got screen retention which is a sort of light burnin that goes away easily.

Using the Car mode will be tricky then if we have to shut the screen
[Galaxy S6 General] megagodx:
Yeah, my Note 4 has some burn in where the dark grey status bar is in the Internet browser. I suggest you enable full display mode in the default Web browser if you use that (it will hide the status bar)

It's greatest efficiency with black and dark colors are also it's bane, unfortunately. I don't think it matters what AMOLED panel they use and how they refine it. They're all prone to burn in, since darker lit pixels degrade slower, thus leave the burned in part brighter than the rest of the display. They at least slowed it down with continue refinements over time.
[Galaxy S6 General] twoeleven99:
There's an app people use with the nex 6 that fixes burn in with no hassles if you're concerned about that
[Galaxy S6 General] lopri:
You can definitely see the difference of 500+ PPI vs 300 PPI with your naked eyes. (in my case with glasses on) Admittedly 300 PPI is a very good number for Latin-based language characters, but you do see jaggies and hollowness here and there if you pay attention. It also depends on fonts as well - some fonts look better on low PPI and others don't. I think 600 PPI is next good number to settle after 300 PPI.
[Galaxy S6 General] i9100g user:
I need it over 9000 [emoji57]
[Galaxy S6 General] ChriZer:
So, I got my S6 yesterday and I noticed that the display has a gradient from left to right (dark grey to light grey) when

the brightness is low and when

showing dark grey (e.g dark tapatalk theme or dark material keyboard)

Is anyone else experiencing this ?
[Galaxy S6 General] trenzterra:
Refer here: http://xdaforums.com/galaxy-s6/general/getting-replacement-s6-due-to-screen-t3074865

The majority of units have it.
[Galaxy S6 General] jonahtriangle:
My note 4 had this. S6 is ok for me.
[Galaxy S6 General] DrearierJester1:
Is yellow tint normal on s6?
[Galaxy S6 General] reubenskelly1992:
Nope
[Galaxy S6 General] daffie:
Depends. Basic mode will give most accurate colors, of which white can look yellow. But that's just perception...nowadays people are used to more blue-ish (cooler) whites and therefore the correct white colortone (more warm...) can be perceived as yellow...but it's not.
[Galaxy S6 General] megagodx:
Cooler colors look better with lower peak brightness. But yeah, more neutral whites tend to look bad when it's under 400 nits of brightness. The brightness output is automatically adjusted and lowered when AMOLED tech displays mostly white content. I wish Samsung would improve the efficiency of the material to have better peak brightness with whites and maintain efficiency.
[Galaxy S6 General] gtg465x:
I wish there was a basic display mode with accurate colors and slightly cooler whites (6800-7000K). As of now, I can only choose between inaccurate colors and nice cool whites or accurate colors and depressing looking whites.
[Galaxy S6 General] Shocky2:
I like the basic and photo mode, but they are a little on the warm side, the whites look slightly yellow.
[Galaxy S6 General] mandroid717:
Samsung's response.....

http://www.samsung.com/za/support/skp/faq/1076253
[Galaxy S6 General] Shocky2:
That just sounds like colour shifting which which be expected which viewing an AMOLED display from an angle, the issue I'm talking about is the whites looking yellowish relgardless of the angle and only when using basic and photo mode.
[Galaxy S6 General] vegetaleb:
Pink tint are also included in this explanation?

It's only for S6 Edge, so people having screen problems here have all Edge?
[Galaxy S6 General] reubenskelly1992:
Mine has a more of a pink tint
[Galaxy S6 General] mandroid717:
It's the same as viewing the display on an angle.
[Galaxy S6 General] vegetaleb:
But some people had half the screen with pink tint
[Galaxy S6 General] demonwind:
The problem many of us are talking about is this:

Not likely to be acknowledged on Samsung's support website.
[Galaxy S6 General] trenzterra:
As I posted over here: http://xdaforums.com/showpost.php?p=60328029&postcount=330

This is how my 3 S6s look like. I made contrasted images so you can easily make out the 'pink' and 'green' areas.
[Galaxy S6 General] gtg465x:
Screen uniformity has always been an issue with AMOLED technology, and the more pixels you pack, the harder it is to get all of those individual LEDs to display perfectly uniform colors. This is one of the few areas in which LCDs are still superior to AMOLED, but LCDs have their own issues of course, like backlight bleed and nonperfect blacks.
[Galaxy S6 General] vegetaleb:
Any screen burnins yet anyone?
[Galaxy S6 General] trenzterra:
I doubt it'll show up so soon, but if the Note 4 is anything to go by, it's likely we'll see burn-ins
[Galaxy S6 General] trenzterra:
Yeah, but the strange thing is it doesn't seem to be the pixels themselves that are causing the problem, but rather what's below/above it.

At first I thought perhaps the green or red subpixels are over-dominating, in which case it would be easy to solve by simply ageing them.

LCDs have their problems, but I think a colour difference is more noticeable than just a brightness difference.

Unfortunately, it seems to happen no matter what the colour is... as you can see from these contrasted images once again:
[Galaxy S6 General] RustySpoons:
I'm Frustrated with the screen on mine, both my Note 3 and partners S4 (Which I always thought had an awful screen) seem to have a nicer white balance.

Although the S4 is somewhat green, the note 3 has a slight green or blue tint.

I have mine on EE UK, Black 32gb. I really wanted a 64gb in gold but no 64gb have surfaced over here yet, so had to get the 32gb.

I am not happy with the White balance, mine appears to be a bit Warm, more of a yellowy/pinkish tint, however it has a PERFECTLY UNIFORM DISPLAY.

I use 3x BenQ Professional IPS 24" BL2411 which are calibrated for 100%sRGB , the S6 looks off compared to these, the S6 looks yellow with a hint of green.

I have compared mine to various units in stores and none appear to be "Warm", some have a bit too much green however.

I can return this handset but I bought it from an online retailer, so have to post it back at my cost and and wait for it to be tested before it gets exchanged.

One thing that I CANNOT stand is incorrect white balance on a phone, I went through 10 iPhone 4's trying to get a decent one, I sussed out with Apple a LONG time ago they cherry pick the devices that go on display with good panels.

I notice a lot of people say they are "OCD" about something, but I do suffer with OCD and take medication for this, things like this can make me very stressed.

Not sure what to do, I will take a photo compared to an S4 and post it up.
[Galaxy S6 General] genetichazzard:
Basic mode has the most accurate colours of any mobile device out there.

http://www.displaymate.com/Galaxy_S6_ShootOut_1.htm
[Galaxy S6 General] trenzterra:
Do post a close-up picture of the S6 itself. IMO, you have gotten yourself a decent display. Many (I believe >50%) S6 displays suffer from an un-uniform display, and that would definitely trigger your OCD worse. I don't know if I have OCD but the un-uniform display bugged me (and still does) for a long while.

Take a look at the images above. I got 3 phones in succession with uneven tints. I'd be glad to trade for a uniform display.
[Galaxy S6 General] reubenskelly1992:
Fed up of this annoying display. Taken away all the enjoyment of getting a new phone :(
[Galaxy S6 General] RustySpoons:
Hi,

Cheers for your reply, I can certainly take a picture of it.

I have a DSLR here, what would you like displayed on the screen, what settings for the phone and camera etc and I'll upload it.

I can't do a comparison with the S4 as my partner is out with our daughter and won't be back till later.

I can understand anyone getting annoyed about the display as it's the main part of any smartphone or tablet, it would be useless without a display.

I'm getting tempted to cancel this contract and take another one out in store, or visit the Samsung repair center and ask them to swap the display over.

I am trying to live with it, but it's bugging me really bad!
[Galaxy S6 General] RustySpoons:
Ok had a go at taking pictures,

White webpage, Low brightness, Medium brightness and full brightness.
[Galaxy S6 General] trenzterra:
Thank you. Is it possible to snap a pic at, say, 1/4s or longer so the scan lines are less apparent?
[Galaxy S6 General] RustySpoons:
I'll keep trying but the camera seems to pick up the PWM whatever setting I try.
[Galaxy S6 General] trenzterra:
From what I could make out,

it seems you have a slight yellow tint on the bottom left, and a small, long, red patch down the mid to bottom right. There may be some discoloration at the top, though I'm not sure what it could be. I have attached the edited photos after doing some colour adjustments (contrast and gamma) to better show the discolorations. If you could provide photos without a scan line (for my case, decreasing shutter to about 1/4s did it; in the captured image there's no scan line even if it still shows in live view), I would be able to do a more objective analysis.

In addition, if you want (and it would really be helpful to me in my research), download the dark grey image attached, run it in a dark room with brightness around 20%, and snap a picture. Presence of dark and bright spots will indicate discolorations.

However, compared to my case, it seems really hard to pick out the discolorations. It seems you have gotten a better-than-average screen, to say the least. My suggestion to you, if you can't live with it, is to send it back, and wait for the LG G4 to be released. It seems they're taking calibration rather seriously this time round, and with an IPS display hopefully you'll get none of the AMOLED shenanigans.
[Galaxy S6 General] demonwind:
Pretty nice screen you got there. At least it's uniform. Would be a shame to return it as I don't think you'll get anything better.
[Galaxy S6 General] RustySpoons:
It seems very uniform, not happy with the white balance though, it's a bit too warm :(

Seems there is no decent screen on the S6, either uniformity or white balance.
[Galaxy S6 General] trenzterra:
Most of the S6s I've come across seem warm though, on the Basic mode. I'm not sure if it's 'by design'.

By the way, after looking at my contrasted photos, your screen still looks uniform? If so, you have a keeper. If I were in the UK I'd be negotiating to buy it from you already ;)
[Galaxy S6 General] RustySpoons:
I will try and take more pictures, I will do them with the phone or camera the other way around to rule out the camera's sensor as they are not uniform either :)

There is no uniformity issue that I can see with my eye and i'm extremely fussy and can spot things a mile off.

I'll try with your image too :)

LG G4 is no good for me, I only went for S6 to get the Exynos CPU.
[Galaxy S6 General] trenzterra:
Well, then you should just stick with it IMO. I wish I had your luck. FYI I'm on my third S6 and all three exhibits uniformity issues. TBH a uniform wrong tint you can get used to, but not an uneven one.

Seems like display uniformity affects LCDs too, look at this iPhone 6 thread: https://discussions.apple.com/message/28062056?tstart=0#28062056
[Galaxy S6 General] reubenskelly1992:
Doubt anywhere as common as the amoled though. My pink tint is fairly uniform. Going into.vodafone monday to do some comparing. Last chance before my 14 days are up and im stuck with this one. Might even cancel my contract as i can get it cheaper else where
[Galaxy S6 General] demonwind:
The question is how common is this issue really?

I don't believe some of us can be this unlucky to get multiple bad screens in a row.
[Galaxy S6 General] RustySpoons:
I wish they had a service menu to adjust drive levels, I am an EX LG Electronics Factory Engineer, I was responsible for the equipment on the production line and the products being made, we manufactured CRT and LCD monitors, the monitors we took home had perfect white balance and focus on them as we set them up by hand. Maybe this is why i'm so fussy as well as I know it could be a lot better.

Funny enough my sister rang me this morning, her iPhone 5s has a grey blob on the screen, it must be bad as she does not notice things like this so I am going to Apple with her Monday.
[Galaxy S6 General] reubenskelly1992:
I reckon its crazy common just 3 things happen

1. Majority of people that arnt crazy tech freaks just dont notice

2. Some notice but cant be bothered and live with it or simply dont want the hasstle of returning for a new one

3. Handful of people like us that have a keen eye and are perfectionists when it comes to our gadgets notice. If everyone was like us i think samsung would have a serious problem on there hand
[Galaxy S6 General] vegetaleb:
I think 30 to 40% of the S6s could have this problem, I am basing this on the number of S6 I saw in showrooms that had pink tint or not. Now of course only a scientific statistic can give true results
[Galaxy S6 General] demonwind:
Supposedly Samsung would make sure the display models are all perfect. I bet all the ones at MWC were perfect.
[Galaxy S6 General] gtg465x:
Yeah, I never said the colors weren't accurate in basic mode. I just said the white balance is too warm for my taste. Many tests have shown it to be in the 6300-6400K range. Optimally it should be 6500K, but most people would even prefer a little higher, like 6800K, for more pleasing whites.
[Galaxy S6 General] demonwind:
So it seems trying to burn in the screen won't help. Does anyone have some knowledge about AMOLED processing? I have a crazy theory about exposing the non-uniform parts of screen to low wavelength UV light.
[Galaxy S6 General] trenzterra:
To be honest even if they weren't it's not something you would identify right there and then. The lighting at showrooms are so bright it's hard to identify the fault. I brought mine in to the service centre at first only to realise I couldn't point out the tint under their lighting.

Furthermore it's probably something you pass off as a viewing angle issue until you really had the chance to interact with it extensively

---------- Post added at 05:28 AM ---------- Previous post was at 05:24 AM ----------

I've been trying the fluorescent light treatment, since fluorescent lights have some UV in them. Though strangely it seems to worsen the problem (or just placebo) when I shine it over the pink areas. Gonna try shining it on the yellow areas later.

---------- Post added at 05:29 AM ---------- Previous post was at 05:28 AM ----------

Too bad most people aren't like you and me... In a perfect world we would have manual controls in the camera, user-adjustable tint, etc. etc.
[Galaxy S6 General] ChriZer:
So, this is what my devices screen looks like.

(Black S6 32GB)

Picture was taken with an LG G3, thats why there is a pink dot on the screen (laser focus)

Whats odd is that this is only noticeable on low brightness with dark grey background.

I also didn't really notice it until I started tapatalk with dark theme, because all other colors look fine to me
[Galaxy S6 General] demonwind:
Weird man my screen is similar and I always notice it on white backgrounds at medium to high brightnesses.
[Galaxy S6 General] kevingary0611:
Seem like a dead pixel. Is it?
[Galaxy S6 General] hanano17:
Should I seek a replacement, or rather would t-mobile replace it if I complained? The bottom half with a gray screen has a brighter or yellowy look to it. Didn't notice it too much until I checked with a gray background...now I can't unsee it
[Galaxy S6 General] vegetaleb:
Samsung has big quality control problems lately with all kinds of screen panels, my 2014 LED TV has slightly burned corners visible only on a plain white image, and crazy cloudings in total black images, they changed 3 times the panels of my TV but they couldn't get rid of them. Since sammy is over-mass producing screen panels they can't control like they must the quality
[Galaxy S6 General] trenzterra:
Yours look above average to me. I replaced my phone again (4th replacement now) and the tint on this is more even, though it's still there. Mfg date was 17 April in Vietnam, so it's not a 'first batch' thing anymore.
[Galaxy S6 General] ChriZer:
No, I took the picture with an LG G3. Thats just the reflection of the laser focus ;)
[Galaxy S6 General] :
Guys, here are pictures I took of my screen. I have a sliver of pink tint at the top and some pink tint at the bottom part. Grays also appear brighter at the bottom part of the screen.

Should I have it changed or this is above average for a s-amoled screen?

Here's the imgur link -> http://imgur.com/a/BMBXt
[Galaxy S6 General] demonwind:
Does look better than most people's here. But then again no one's ever really posted a near-perfect screen.
[Galaxy S6 General] trenzterra:
Above average I would feel. I feel that as long as it's across the whole top or bottom it's not as distracting as if it were only halfway across. YMMV. From the photo yours look pretty uniform except that it's brighter in the middle. Seems pretty okay to me.

---------- Post added at 06:23 AM ---------- Previous post was at 06:23 AM ----------

RustySpoons has a near perfect one. Check out two pages back.
[Galaxy S6 General] superleeds27:
Here's my second
[Galaxy S6 General] trenzterra:
Looks pretty okay to be honest...
[Galaxy S6 General] :
Checked it out. It does indeed look way better. I'm scared of having mine changed though. Customer service where I'm from is a killer and there's a chance that I might get an even worse unit. :/ Is this problem (tints) apparent only for the S6 / S6 Edge or is it just a "natural" trait of Super Amoled screens?

Also, if anyone's willing to check this http://imgur.com/a/p5maP . Can someone tell me if that's normal? If you look closely the first screenshot (lock screen) isn't really black. It's very dark gray. All the other screens where the wallpaper I chose can be seen has the super amoled blacks except for the lock screen. It fixes itself when I try to open the dialer / try to edit the widget settings while the phone is locked but locking it again goes back to that dark gray lockscreen.

---------- Post added at 06:17 AM ---------- Previous post was at 06:14 AM ----------

That honestly looks great. Compared to mine at least. Mind taking pictures of a gray image in different brightness settings and posting the manufacture date & location?
[Galaxy S6 General] trenzterra:
This is mine, contrasted and non contrasted.

S6 Gold 64GB, 17/4/2015 in Vietnam
[Galaxy S6 General] superleeds27:
I'll do the images when I get in.

5/4/15 - Vietnam - EE - 32GB Black
[Galaxy S6 General] trenzterra:
I believe it's because the lock screen has the bubble effect overlaid on it... so it won't be perfectly black.
[Galaxy S6 General] :
Good to hear. I wish there was a way to turn off that effect though. I like my blacks... pure. :p

I've been so focused on checking if my display is working that I didn't notice that my volume up isn't "clicky". I just noticed that I sometimes fail increasing the volume when I'm pressing down on the lower part of the button. I need to click it right at the middle / top part of the button. It barely "clicks" as well. Still thinking if I should have it replaced because of that though (and luckily get a better screen). The risk of getting a worse display while already getting stressed out by bad customer service scares me.

---------- Post added at 09:02 AM ---------- Previous post was at 09:00 AM ----------

Cool, thanks!

I'm starting to doubt manufacturing place / date really affects the units though. Some claimed April 10+ units still has the tint defect.
[Galaxy S6 General] vegetaleb:
The delivery guy was just at my home 1 hour ago, he sells phones door to door and I buy from him for years, he brought me an S6 to buy it, 1st thing I tried was to go into youtube and try an LCD test video, once at the full white screen I did a pause and...pink tint in the lower part of the screen!!

With white background it's obvious like the setting menu, I was so pissed off because I was so wanting to have the S6 today, but I told myself I will keep this phone a whole year and it's always a pain at the warranty services, so I told the seller that I was sorry but I can't take this S6 because of this defect, he reckoned there is a pink tint too in the lower part, he will bring me another unit tomorrow (now back to the temporary xperia Ray), I hope tomorrow's S6 will be perfect :fingers-crossed:

He was surprised I saw this tint as he sold many S6 and nobody complained about any tint, I told him that it's because lot of people complained at XDA that I noticed, perhaps I wouldn't noticed like the others and thought it was perfectly normal.

But seeing how easy we can get this tint I wonder if there isn't at least 70% of S6 having it, can we do a poll?
[Galaxy S6 General] superleeds27:
Few more, couple on grey/dark and a few on white