The reasons why I purchased a Tab S 8.4 were its awesome screen quality and high grade processor. For the later, the poor touchwiz optimization and the average gpu led to disappointing results. But well, the screen IS awesome !
Or is it ?
At first, I was truly impressed. But after some web browsing and reading e-books, something felt wrong with the colors homogeneity. On white backgrounds, the right part of the screen in portrait mode would tend towards a yellowish tone, while the left part would tend toward purple tones. Nothing obvious, but quite annoying when noticed.
After trying around with different backgrounds, it become more obvious with certain colors. The one used in settings background for example: The left side of the screen is deep blue, the right part is much lighter.. and greener.
Further investigating the issue, I figured it is most obvious when watched in the darkness and using dark colors: RBG such as R:0, G:10 , B: 20 or even R:20, G:10, B:0
Did anyone else notice similar issues ? Would you guys mind trying to create a R:0, G:10, B:20 (#000A14) background and check the result on your tab S in a low light environment ? On mine, it results in an obvious gradation from dark blue to green.
Attaching some pictures. The rendering is not the best especially in the darkness, but the issue remains clearly visible.
There is something very wrong with your screen. Return it.
suzook said:
There is something very wrong with your screen. Return it.
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I second that, that is not normal
I concur with the others, get it replaced.
AMOLED screens can fail for any number of reasons (pixel death is the main one) , if yours is showing problems get it replaced now rather than live with it and have a more serious problem later.
We've seen this yellow color issue reported by a few others. Looks like Samsung let a few diseased horses out of the barn. I concur with the others. Return it.
Thanks for your feedback, guys.
I'd like to highlight the fact this issue goes completely unnoticed in most scenarios. A friend I showed it on white background didn't notice it at all, in movies/games/pictures I don't see it at all. I only felt it while reading, and even then it was not obvious, just a persistant feeling that led me to further testing.
Only the extremely dark colors seem to be affected, and even then it's only noticeable in the darkness. I will go back to the store tomorow and exchange it for a new one, but I'm wondering if the issue isn't widespread and simply went under the radar as its effect is hardly noticeable in 99.9% of the situations.
Did anyone else check at an homogenous R:0, G:10, B:20 image in the darkness with their tab ?
I personnally used Moon+ Reader's background color settings for testing purpose, pretty easy to set up.
New Tab S, same issue
I changed my Tab S 8.4 today for a brand new one. Same test, same issue: the background is still not homogeneous. The issue is visible in the darkness on dark colors such as the one used for the settings menu, which seems naturally gradated from deep to lighter blue on my screen.
Could someone else test and reproduce the issue on their tab ?
I have tried to reproduce what you're seeing on my 10.5 and honestly I can't. I'm not going to say the white is always 100% pure white but it's close enough. At the same time I'm trying to avoid looking for something that's not there for my Tab.
ukael said:
I changed my Tab S 8.4 today for a brand new one. Same test, same issue: the background is still not homogeneous. The issue is visible in the darkness on dark colors such as the one used for the settings menu, which seems naturally gradated from deep to lighter blue on my screen.
Could someone else test and reproduce the issue on their tab ?
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Maybe you can go into Settings / Accessibility / Vision / Color Adjustments and see if your calibration is off. There is a test there where you arrange tiles by color gradation and it adjusts your screen. I am having none of the issues you mentioned, but my 10.5 Tab also passed that test with no color adjustments required. Give it a try.
mitchellvii said:
Maybe you can go into Settings / Accessibility / Vision / Color Adjustments and see if your calibration is off. There is a test there where you arrange tiles by color gradation and it adjusts your screen. I am having none of the issues you mentioned, but my 10.5 Tab also passed that test with no color adjustments required. Give it a try.
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Test completed successfully. The calibration is fine, and the issue is not noticeable during the test. The issue is actually not noticeable in most usages, I only see it on homogenous very dark color backgrounds (the 10% darkest colors), and while in a dark environment myself. In most common usages, the screen looks fantastic and flawless.
Unfortunately, I often use my toys in my bed in the darkness. AND I am concerned about a possible defect that would get worse over time.
That said, tests on similar colored backgrounds on other AMOLED screens (PS Vita, Galaxy SII) lead me to think this could be a global issue with AMOLED.
Unfortunately, I often use my toys in my bed in the darkness.
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Lol, to those of us with a perverse sense of humor we would refer to that as a hanging curveball.
Whatever issues you are experiencing I would take that over LCD light bleed any day.
ukael said:
Test completed successfully. The calibration is fine, and the issue is not noticeable during the test. The issue is actually not noticeable in most usages, I only see it on homogenous very dark color backgrounds (the 10% darkest colors), and while in a dark environment myself. In most common usages, the screen looks fantastic and flawless.
Unfortunately, I often use my toys in my bed in the darkness. AND I am concerned about a possible defect that would get worse over time.
That said, tests on similar colored backgrounds on other AMOLED screens (PS Vita, Galaxy SII) lead me to think this could be a global issue with AMOLED.
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Dear Friend. Like you I am very sensible in that point. I have a lot behind me and I can tell you, that homogeneity is something we can not expect from all types of modern displays, except the pro ones with a special function that takes care about this issue. Any screen has such issues, the question is just what type of and the intensity differs. The lower the light in our environment the more sensible our eyes get. The longer we stare into the screen the better we see all color details. Worst case scenario is a totally darkened room. Your eyes won´t get more sensible than in such a situation. Especially AMOLED displays will show the strangest kind of irregularities you would never see normally. I remember the Tab 7.7 -- in a dark room the screen was over and over covered with black circles. Wow ! The Vita shows strange textures instead. It is horrible.
My advice to you would be to start trying to avoid using your tablet or any display in a dark room. Turn a light on, it will be nice for your brain and eyes and you will not see the described things. It´s just a matter of habit, nothing else. You will get used to it and probably feel very well with it. Anyway there will still be the green haze.... Not to talk about the yellowish etc. stuff.
I returned the Tab S for a MiPad and it´s much better, really nice homogeneity (compared to other actual devices).
I had 4-5 iPad Mini Retina and all of them have horrible yellowish/blueish tint.
I had 4 iPad Airs, 3 were horrible in a similar way, now the 4th one is okay, I finally had luck.
I had 2 Galaxy 12.2 - the first one yellowish in a quarter, the second has just a slight, short yellow stripe on the bottom border.
I had a Kindle Fire HD + HDX - both with bad, ugly green spots at borders and corners. Also partially yellowish.
Once I held a Galaxy Tab 3 in my hands that was actually flawless. I was shocked. It never happened again. Was from a classmate.
Today I guess it was a mistake since I could not test in in a home-at-night-environment.
I checked dozens of Tablets in big stores here - guess what I found ???
Look at the iMacs .... Horrible yellowish tint. Horrible. It´s a shame.
I use my Tab S 10.5 in a dark room with some regularity. I've never experienced any of these odd artifacts you guys are discussing. My black screen is just black. Colors look right. White is white. I think its a fallacy to claim that all amoled screens face these issues. The amoled screen on the Tab S is the best most advanced amoled screen ever created. Problems from older devices shouldn't apply here.
Please remember based upon other user input, Samsung did seem to have a run of defective screens on these tabs they put out.
Here's a quick video test taken in a pretty dark room (it's daytime here). As you can see the screen is just black. There is absolutely no reason to avoid viewing your Tab S in a dark room. If you are not seeing the solid black I have demonstrated in this video I suggest exchanging your possibly defective unit.
ukael said:
Did anyone else check at an homogenous R:0, G:10, B:20 image in the darkness with their tab ?
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In my experience 100% of AMOLED displays exhibit this behaviour, i.e. both Tab S 8.4 I've had! The first one (exchanged because of unhappy whites) had it so obviously that it looked like a diagonal gradient fade to one corner. The second tablet shows it as a slightly patchy screen, see attached photo which looks worse than the reality.
This is only visible in a completely dark room with the display set to its darkest (or close to), displaying a very dark image (my photo is of the spec. you mentioned - hence blue/green colour). To show this I needed to use an exposure of about 1 second, if you use less the image will appear black, likewise (probably) if you try to capture it as a video using normal ISO values in camera, the camera won't pick up the background.
Armpowered said:
In my experience 100% of AMOLED displays exhibit this behaviour, i.e. both Tab S 8.4 I've had! The first one (exchanged because of unhappy whites) had it so obviously that it looked like a diagonal gradient fade to one corner. The second tablet shows it as a slightly patchy screen, see attached photo which looks worse than the reality.
This is only visible in a completely dark room with the display set to its darkest (or close to), displaying a very dark image (my photo is of the spec. you mentioned - hence blue/green colour). To show this I needed to use an exposure of about 1 second, if you use less the image will appear black, likewise (probably) if you try to capture it as a video using normal ISO values in camera, the camera won't pick up the background.
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All I can say is that is seriously messed up. My screen looks nothing like that and just as pitch black as in my video. Considering black pixels in amoled screens are basically turned off, they should be utterly and completely black and devoid of light. Am I misunderstanding and your picture is of a blue background?
All other dark colors should be solid without strange light effects as well.
mitchellvii said:
All I can say is that is seriously messed up. My screen looks nothing like that and just as pitch black as in my video. Considering black pixels in amoled screens are basically turned off, they should be utterly and completely black and devoid of light. Am I misunderstanding and your picture is of a blue background?.
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It's daytime for me at the moment but yes from memory, if you display an actual black image then it will appear as black, you see this effect when trying to display an image that is almost black, at very low levels of light output the (my!) panel isn't even.
The attached image is R0 G10 B20 and on my PC looks black - it isn't I just used "ColorPic" to check the screen colour and it shows those values.
It's not a big issue but does appear when using in fully dark room with brightness turned down, I notice it in some apps that have very dark background colours (which you'd assume were black and see as such in daylight, but aren't).
Obviously under these circumstances an LCD would appear as a (relatively) bright grey !
Armpowered said:
It's daytime for me at the moment but yes from memory, if you display an actual black image then it will appear as black, you see this effect when trying to display an image that is almost black, at very low levels of light output the (my!) panel isn't even.
The attached image is R0 G10 B20 and on my PC looks black - it isn't I just used "ColorPic" to check the screen colour and it shows those values.
It's not a big issue but does appear when using in fully dark room with brightness turned down, I notice it in some apps that have very dark background colours (which you'd assume were black and see as such in daylight, but aren't).
Obviously under these circumstances an LCD would appear as a (relatively) bright grey !
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OK I'm a bit confused. The image you attached looks either black or very very dark gray on my screen. No color variation at all. Oh well
mitchellvii said:
OK I'm a bit confused. The image you attached looks either black or very very dark gray on my screen. No color variation at all. Oh well
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Same on my tab in daylight, it only appears patchy when in a very dark room with brightness turned right down. Maybe amongst the variations some will be perfect?
Armpowered said:
Same on my tab in daylight, it only appears patchy when in a very dark room with brightness turned right down. Maybe amongst the variations some will be perfect?
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Still beats LCD light bleed
I had ordered OP3 on the day of launch and got it the next day. After using the phone for about 5 days, I noticed that the top part of the phone had a bad pink tint which was clearly noticeable on White and Grey backgrounds at any brightness. I sent the phone back for replacement and got a new one few days back. The phone looked almost perfect and have been using it for around a week now. Yesterday I bumped on another thread in a forum when I saw a peculiar screen uniformity issue in only one particular shade of Grey.
Steps to reproduce the issue
1) Open the below link in Chrome in a dark room.
http://www.nullabletype.co.uk/static/styles/blah2.html
2) Reduce the brightness to just above the minimum brightness (5-10%) with adaptive brightness turned off.
3) Go to Display settings --- Turn on Night mode --- Increase the slider below to the maximum.
4) Scroll to the 3rd image (the one after Black)
5) Mine has uneven brightness. Some part of the screen is darker than others.
6) Increase the brightness to say 25-30%. Everything looks uniform.
7) Scroll to other images (other shades of grey) and no screen uniformity issues at any brightness.
Now, I am not sure if I should send this back again. I don't use such brightness levels even in night and I don't see any screen uniformity issues in any other brightness levels or shades. I also searched in internet and found similar issues being reported in Nexus 6P, S6, S7, etc in Reddit, xda, etc. There are people who have RMA'd their devices 5-6 times without much luck. From what I have understood till now, AMOLED's are not really perfect in displaying Grey at extremely low brightness. Or may be, its due to the current software targeting the NTSC Gamut ? Anandtech recently said that sRGB update (coming in 3.1.4) has made considerable improvements in Greyscale accuracy.
Before I even think of sending the phone for 2nd replacement, I would like to know how's the screen uniformity with others here.
I did the screen test the moment I got the phone everything turned out good, I was really worried after reading the reviews on the net about the screen. But it seems like only handful of people are facing the problem.
Can you please let me know how you tested it ? I too had tested it on Day-1 since this is the second OP3, using "Screen Test" app and everything looked good. Only one particular shade of gray at low brightness creates this problem.
Not exactly 'real life' usage?? Haha
Looks fine on mine. Uniform grey across the whole screen.
Yeah I definitely have the same uneven brightness on the dark grey on the right side, it's even visible on the notification drop down. Like you, I'm wondering if it's something that can be fixed, or something I should bother RMAing, am I just gonna have the same thing again? It's strange, it looks like uneven backlight but there is no backlight.
Hi
I just got my new pixel xl today (had one that I stupidly sold only to debug again).
This phone has a very yellow tint anybody else experiencing that?
Is it something worth complaining about orjust something to learn to live with?
Compared with S7 edge and iPhone 6 (with and without flash)
Lol you probably enabled night mode in display settings
No unfortunately not
Strange, try to toggle it on and off to see if something is stuck otherwise idk
I managed to removed it by using screen adjuster free app and turning up the blue to +10. But is there somethung wrong with the phone?
Is the s7 on adaptive mode? Try amoled photo or basic mode, and see how it compares.
Sent from my Huawei Honor 5x using Tapatalk
It doesn't look particularly yellow. I think the S7 Edge and iPhone have bluer white tints. Is the sRGB mode off?
Brand new phones can have some adhesive on the glass and display that still needs some drying. It can be still yellow for a week or two and the yellow tint eventually dissipates. I'm not are if that is the case here but it's a guys from hearing about it with other devices.
fchowd0696 said:
Brand new phones can have some adhesive on the glass and display that still needs some drying. It can be still yellow for a week or two and the yellow tint eventually dissipates. I'm not are if that is the case here but it's a guys from hearing about it with other devices.
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This is definitely not true. I mean it doesn't even make sense if you think about it. If there was adhesive that wasn't dry there would be distortion and also evidence of it when the screen was pressed down. It is just something that customer service has told people over the years to appease them until their eyes adjust to the screen. People with pink tints on the Nexus 6p was told that from time to time when they called in about it but it never resolved. Turned out it was just a lower quality panel with lower quality control tolerances.
The guy a couple of posts up was probably right. The s7 edge comes with the screen default set to "Adaptive" which tends to not be accurate, but more of a the blue-white that we are used to. True white (sRGB) tends to look more yellow, but is considered accurate. I bet if you go Indo display settings and change "adaptive" to "basic" on the S7 edge they would look very similar then.
Yeah even I am experiencing it but I just compared it with another pixel xl and it also has a yellow tint and when I called customer care hel tells me that both of them would have been defective products.
I've got mine pixel XL yesterday. And when I look at it directly it has a yellow tint but when I tilt the device up or down it disappears
I changed the display mode to sRGB the moment I started using the phone, and in comparison with default mode, yes, there is a slight yellowish tint on the screen, but that doesn't bother me, while its not perfect white point, this is still much better than what I saw on some other phones' sRGB mode. I am happy with the display overall. Just Google should have put the sRGB mode under the Display settings but under Developer settings.
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
Well,this frustrates me a lot,I'm just uploading video so you can see and compare to some cheap other chinese phone.
I'm noticing yellow tone all over screen,kinda like there is a night filter on with very low bright nightlight settings.
I increased brightness all the way to 100 % didn't help.
I also removed plastic cover from phone,nothing, still present.
I even switched to Vivid display settings before that and reduced RGB (R channel all the way,G to middle and Blue increased all the way) and set tone color to cooler slider all the way,no difference.
So,since I purchased using phone,is this some software bug/issue or I got faulty screen (maybe some kind of damage from sunburn),or this is just how this display work?
I'm uploading video and will post link soon...
So anyone else having same issue,and what to do,be sure I can not RMA the phone since I purchased it used.
I'm also anxious that the screen might die on me soon.
But this yellow tone frustrates me a lot,colors are not accurate at all because of it.
does it show in safe mode? what happens after reboot, goes away and come back later or...?
raul6 said:
does it show in safe mode? what happens after reboot, goes away and come back later or...?
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Hmm,why would I want to access safe mode,I don't have issues with phone except bad wifi and this issue.Mostly it's noticeable while watching vids (youube),look here if you can see the difference...but maybe it is suppose to be like that.
I set color mode all the way to cool tone and no difference to my eye.
I called a friend on a drink which has N10+ too,then we put 4k Nature video on each of the phones at same time and same screen lightning intensity.
No diference,between them...so now I'm confused totally.
Are my eyes cheating on me,is it possible that there is slight yellow tint (like light night light filter) or something is wrong with my eyes?
Is it possible that maybe screen adapts it self based on ambient light so I'm seeing yellowish tone...who knows,but I do trust my eyes,though picture was the same color accuracy on both phones...
I'm totally confused now...
I have currently 2 note 10+ phones. One which still has the original display while on the 2nd I installed a new display with frame. Comparing both these phones now, the older display - about 1.5 years old with light screen burn on the bottom is more yellow than the new one. The new one is very white compared to the old one. Maybe your display is showing its age?
damn...it was a damn mask/cover with yellow tint over it,not display...how was I stupid.
Some weird posts here, didn't you say you removed the film earlier ?