yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
At this point, I'm doubting any of them are perfect to be honest.

If you want to be sure download the display tester app from the Play Store and load the burn-in test.

Move all the sliders to the left, this should give you black. Then slowly increase the green level until the pixels turn green, if all the pixels turn green together you got yourself a perfect display.

Warning though, once you see it, it can't be unseen. :)
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en_US This app I assume? if so, I did that test and my entire screen turned green slowly with no blotches/dead areas like your screen. Not sure what brightness you used but I turned mine down and up to test. Entire screen slowly turned green and slowly faded to black as normal. I doubt I have a perfect panel as I highly doubt they exist on any device. Out of curiosity, does your issue affect anything with your normal viewing experience? Is it like the OP's image or are you playing panel lottery to find the unicorn? I understand you want to be satisfied with what you're paying for and have every right to be. But I'm curious how much your panel issues have affected your normal experiences?
[Samsung Galaxy Tab S6 Questions & Answers] thecrater:
Hi [MENTION=2743198]zetsumeikuro[/MENTION]. What model do you have the 128GB or the 256GB and is it wifi or LTE? Both tablets were 256GB LTE for me.
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
Well if your tablet passes that test then it's probably pretty good.

You can clearly see it in dark mode that there is a band down the centre of the display that appears brighter than the rest of the screen, which exactly matches the area which turns green first. In any circumstance when the brightness is low it's noticeable, even during video.

This is an OLED display at the end of the day, dark mode and themes are recommended for better battery life, and it's less strain on the eyes.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
I have the wifi 256 GB model. It's probably just the panel lotto and I got lucky and got a better one.

Okay so the conditions for our tests were the same/similar. I just got fortunate with the panel lottery this time around. It's probably far from perfect but I don't notice anything when viewing videos, games etc.
[Samsung Galaxy Tab S6 Questions & Answers] Drovakoy:
I've been getting a very similar burn pattern to the OP's Tab S6

It's not that bothersome watching movies, where colours change a lot, but drawing on static backgrounds, its noticable.

I'm deliberating contacting Samsung, it's not that huge dealbreaker, but I don't want it to get much worse.

Pic is taken with dark grey background, max brightness.

http : // imgur . com / a / jO6QdmA

(Take away spaces, it's my first post, so I can't post links)
[Samsung Galaxy Tab S6 Questions & Answers] Fuzzz16:
I returned mine. One week hassle to get my money back. Samsung store will let me open box at the store to see if there is problem with screen. We will see. It' s sad that this issue is occured. Loved the tablet...perfect colors HDR etc....:(

---------- Post added at 07:52 PM ---------- Previous post was at 07:40 PM ----------

Does it have to be all pure black or a bit grey without banding?
[Samsung Galaxy Tab S6 Questions & Answers] Fuzzz16:
Finally got a new tab s6 and checked the screen at store and voila almost perfect but it is night and I had earlier:)
[Samsung Galaxy Tab S6 Questions & Answers] malaga82:
I returned 3 tab s6 before giving up.

All three after enabling dark mode showed up very very bad grey tones with non uniform tints.

Amazon wrote that they will see if it’s a batch problem.

Strange that only this thread write about this issue, for me it’s a big issue, a tablet claimed for the screen with such a bad quality check?!

My only positive thing is that I bought it thought amazon so refund wasn’t a problem.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
Which color and storage option did you have? Amazon on the surface seems like it is okay with returns etc. But if you do too many your account might get shut down without any prior notice.
[Samsung Galaxy Tab S6 Questions & Answers] malaga82:
I had grey 256gb lte.

Amazon just said for Samsung it’s all good...lol.

A clear problem on the top component ( screen ) is not acceptable, I don’t know how can be normal for Samsung a screen to be such trash.

Will see what I’ll find on Black Friday, I think I’ll end up getting an iPad, not my first choice but I can’t handle something with issue in mind.

About my returns, I sent many photos to amazon customer care and every single Amazon agent said he/she saw the issue through my photos, so I’m fine I’m not doing anything wrong ?
[Samsung Galaxy Tab S6 Questions & Answers] Reuben_skelz92:
It's not great. But I wouldn't call the screen complete trash. It's still beautiful 95 percent of the time . All oleds get a bit funky on night mode and Low brightness
[Samsung Galaxy Tab S6 Questions & Answers] malaga82:
Wait, my words are about my 3 tabs I got, it’s clear that If had one non faulty tab i couldn’t said that.

But 3 times in a row is really strange, don’t you think that too?

Even amazon agents saw the issue.

Samsung said to amazon, that wrote to me then, that there is not a defect, and in case of purchase to send it to a center: lolwut???

EDIT: check pictures from my 3 returns
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
I agree with you 100% that uniformity issues shouldn't be tolerated at this price point and Samsung should give the better binned screens to the Tab s6. Best Buy shows they will have $150 off on the Tab S6 in form of e-gift cards so I assume Amazon will follow suit. I do wonder if showing the pictures to the Amazon CSR's actually does anything? Since I think The system just uses an algorithm and checks how many returns you've done in the last months. Then I assume it goes to some schmuck and they decide the fate of your account if they think there's abuse or too many returns in general.

Sorry for the multi quote on you but I wanted to respond to the last message as well. Looking at image#1-2 that doesn't look too bad compared to what I've seen. #5 appears to be the worst and these are three different tablets that you took pictures of? Have you checked the dialer app to see if it's pure black?
[Samsung Galaxy Tab S6 Questions & Answers] malaga82:
Well, i'm an alexa dev, prime user, i usually buy 99% of my needs on amazon and i don't usually do returns if not needed, aka the product has issue.

It's not my fault if a tablet had a screen issue: i noticed amazon cs, they propose me a change, that's all. 1,2 times.

What i want to say is that i'm with a clear conscience.

No problem mate, we are here to discuss.

I don't own the tablet(s) anymore: i mainly picked it up from the package, did the initial configuration, enabled dark mode, disgusted myself, took pictures of the screen, open a chat support to amazon and returned it. they last more in the return package than in my hands :rolleyes:

Yes, that are photos from all 3 tablets i got. I just picked up some of them.

I mainly checked from samsung browser and play store, that showed that non uniform, ugly, grey tone.

As i remember i had very bad screen issue only with the first S6, settings looked so weird but blacks was fine. Only the jelly effect on black chats ( for example in telegram ).

EDIT: attachments with reality vs expectation
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
I'm in the same boat as you minus being an alexa dev, I do the majority of my shopping through Amazon. I've gotten emails before not always saying I'v done a larger amount of turns this month and that's usually due to screen protectors that I buy and they're trash and me returning them. Have you ever gotten that email before? If I wasn't so deep into the Android ecosystem I would of bought the newer iPad instead as overall iOS for tablets is just flat out better. Apps actually are coded for tablets and tablets have their own version vs just Android on a bigger screen and then some devs don't care to optimize for tablets. The blacks are fine and the only way you can see that defect oddly enough is by using the dialer app or contacts or swipe over to bixby home. Then, if your panel has uniformity issues you'll see what looks like LED bleed. I can live with the jelly effect and some uniformity on gray,but since I watch a lot of media in darker environments, it does sometimes show up on certain videos the led bleed effect on some dark scenes and it triggers me. I don't think cranking up the brightness fixes this issue like it does for the uniformity issues visible on gray. Plus, I don't want to blind myself while I'm watching content. Granted, my issue isn't as bad as the OP's and I thought at first I had no problems since I did the test on the green background as advised by another user and had no problems. My return period is well into next year and I might return it and try the lotto again and see if I luck out. I might go with a blue unit this time and see if that makes a difference which I doubt. But another user on reddit had the gray unit as well and the first blue unit he picked up was really good with minimal uniformity issues compared to the 2-3 gray units he has had. It's probably luck of the draw as usual, but it doesn't hurt to try right?
[Samsung Galaxy Tab S6 Questions & Answers] civciv:
My S6's screen have this issue too. But if my tab's screen is faulty, how can this be possible? Software update page shows some uniformity but the next screen "download and install" does not. It seems to me that issue is related to some kind of a One IU 1.5 bug with night mode on.
[Samsung Galaxy Tab S6 Questions & Answers] PundA14:
I have waves on my Panel when i look from the side.

Is that normal?
[Samsung Galaxy Tab S6 Questions & Answers] malaga82:
wow man, the first image shows really sh**ty blacks :eek:

If you want to be sure, just test with other apps with black UI like google apps, telegram, screen tester apps to sort the problem.

In my case, all apps that show grey color, ended up with non uniform tint, like if something was "printed" in the panel and grey color washed out.

Never got emails about it, but maybe every amazon sort things in different way, who knows.

Luck is always there, but i think there won't be the needs to "use it" if quality really matter: quality checks are there for a reason.

Or maybe it's amoled screen limitations, i don't know.

But if what i treat as an issue is not for samsung and they suggest to me to deal with support center, losing time and maybe never fixing it, then i just give up its product and will go to another vendor.

Like any other product that don't fit our "standard" in a way or another.

If you question something maybe it's notl.

Can you attach some photos so we can see?

Tnx
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
I don't think it's a software issue sadly. Watch a dark video on Netflix or something similar and you should see the uniformity issue on dark scenes that "glow" whatever it is. Watch it in a darker room and you'll see it. Samsung had some piss poor quality control on these tablets.

---------- Post added at 12:02 PM ---------- Previous post was at 11:58 AM ----------

It's possible that they do sort things differently and I wouldn't be surprised. It's due to the mass production of screens. The way OLED screens are produced is pretty much identical to how CPUs are binned. One big screen is made and then cut into smaller ones and the screens further from the center = less quality and uniformity/banding issues start to appear. Samsung could eliminate that if they changed how they produced the screens. Most people won't notice it under normal usage and under normal lightning circumstances, e.g. a decent amount of light in any room that device is used. So I guess Samsung doesn't mind to play the exchange game with consumers that actually care to find a more uniform panel since we're a small minority.
[Samsung Galaxy Tab S6 Questions & Answers] PundA14:
Hear is a photo from the waves on the panel

https : // imgur . com / Sei7gsE

Take away spaces
[Samsung Galaxy Tab S6 Questions & Answers] malaga82:
Well, yes i agree.

If for samsung an 800+€ tablet is for games or movies ok then.

But seems that obtain a right screen is hard, maybe be a technician and have good eyes is the issue :D

I can't understand very well what is supposed to see, maybe more images can help.

I see a sort of lines but from one image is hard to guess.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
That is caused by the screen protector that you have on your device and the light refracting on it.

---------- Post added at 04:24 PM ---------- Previous post was at 04:23 PM ----------

If I was quality control for these tablets very few would make it through the QC haha!
[Samsung Galaxy Tab S6 Questions & Answers] PundA14:
The waves are without Screenshot protector too.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
Then my second guess would be it's the oled panel.
[Samsung Galaxy Tab S6 Questions & Answers] PundA14:
On my tab s4 are the waves too but not so much.

Is this normal or is it a reason for warrenty?
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
If it's not messing up your viewing experience and you're happy with everything else aka screen uniformity I'd say don't bother exchanging.
[Samsung Galaxy Tab S6 Questions & Answers] Fuzzz16:
Normal!
[Samsung Galaxy Tab S6 Questions & Answers] mloiz:
Hello everyone,

I also got my Tab S6 256GB and I have some grey areas as everyone else.

Have a look on the official statement of Samsung regarding the issue,

w w w .samsung.com/sg/support/mobile-devices/backlight-bleeding-of-tablet-lcd/

You can also open the dialer app, type *#0*# and check your screen on Red Green Blue and Black modes.

Probably you will be surprised that no similar effects are visible during this test as it is only visible during low brightness settings as light bleeding "occurs".
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
That official statement is pointless because it only applies to devices with LCD/LED displays. The tab S6 uses an OLED display which means there is no back light as each individual pixel lights up on it's own without the need of a back light to project light through the pixels.
[Samsung Galaxy Tab S6 Questions & Answers] Reuben_skelz92:
By the way mine is the same on dialler. Wired
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
It's also the same on contacts and Bixby home. It's strange because black should be fine and be completely off. Maybe this has something to do with Samsung's software? Since other black backgrounds and images seem perfectly fine. So far every single tab I've seen has that issue to a varying degree. It's probably something in the software and it causes the uniformity issue to emerge
[Samsung Galaxy Tab S6 Questions & Answers] Reuben_skelz92:
Yeah it's the same. That what I'm thinking. It must not be a true black for some reason. I see that same in Samsung browser when it's in dark mode. Strange they all seem to have the same issue
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
I really do believe that these are the leftover cuts of screen from phones. Since the tbalets don't sell as well they also didn't bother with voltage tuning to fix these issues. It definitely affects the viewing experience when you're watching certain media in a dark room. https://imgur.com/a/u33IlOe it does look a lot worse on camera but as you can see in image 1 that's where I have the majority of the uniformity issue on "blacks". In the second picture you can see it's brighter in lower left corner. When I flipped my tablet around you can see that brightness is gone from the corner. My upper right corner has uniformity issues on gray and does appear darker, but I don't know if it would affect dark scenes in videos. Sad to say that I think all the panels in the tablet have these issues to varying degrees from severe to acceptable. If Samsung took the time and money to calibrate properly, we wouldn't have this problem.
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
I've gone through four of these now, the uniformity is usually in the form of a wave with the middle being darker or the left and right being darker or it's entirely focused in one corner. I'll keep asking for replacements until I get one I'm happy with or they refund me and politely ask me to go away. :silly:

I doubt they'll ever admit most if not all have this issue to some extent, most annoying thing is no reviewers appear to have spotted the issue so other than dealing with I few awkward customers like me they've pretty much got away with it. :(
[Samsung Galaxy Tab S6 Questions & Answers] Reuben_skelz92:
That is true. I do think there still high quality panels. Never noticed this on my tab S4 etc. But if it was hardware it would be there no matter what and wouldn't come and go. Since I don't really notice it it's not a deal breaker for me but is it a bit odd
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
Maybe on the tab s4's they did electronic compensation to correct uniformity in addition to calibration. Perhaps Samsung skipped that part this year with the Tab S6 since it's not a main seller and they're keeping production for that small niche crowd. Considering Best Buy dropped the 256 GB Gray version to like $450 one month later of a brand new product is crazy. It is definitely a hardware problem as on every single one I've owned the defects on the dialer/certain black apps has shown up in different areas and to varying degrees. Samsung could hide the problem with a software update as I think as the uniformity in question shows up in dark scenes and you notice when watching in a dark room. I might try one more time in store and ask them if I can open it and test before returning my old one (if they would let me). But at this point I don't think there's a tab s6 out there with a B+- A rated screen.
[Samsung Galaxy Tab S6 Questions & Answers] HighContrast:
Do you guys have any issues with viewing angles? When I'm on a white screen, a slight tilt in the viewing angle will show some blueish tones on the outer side of the screen. Is that normal for this type of panel? I got my S6 yesterday and havent had much time to test it, but I started notecing this last night when I was reading a book.

I don't have it with me right now, but I will try to post some pics when I get home.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
That is normal for OLED displays. If you view the display straight on there will be no shift.
[Samsung Galaxy Tab S6 Questions & Answers] MasahiroM:
So, how are you guys dealing with the problem? im on my second tab s6 and its worst than the first. Should i keep replacing it till i get a good one or send it to warranty in the hopes they change it to a good display? is this a valid option since you are basically complaining about it? I dont feel comfortable paying so much for a tablet and having this kind of problems, here in Europe they go for about 800 euros for the 256 model, so its expensive.
[Samsung Galaxy Tab S6 Questions & Answers] civciv:
I have returned mine and didn't want a replacement. IMO, it is not acceptable that a tablet has this screen issue in that price range. But I would buy it again, if it's price drops, let's say %30, significantly.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
The only way you can deal with it is to keep exchanging until you find a model that is acceptable to you. Sadly, I've given up and I'm keeping my third one because of the $200 off deal that I got from BestBuy. The screen isn't perfect, but it's a lot better than the other ones and it won't affect normal usage. Barely any issues in a dark room when watching darker videos so it's okay.* Could I keep exchanging and hope for a better one?* Certainly, I have until next year, but I also no longer want to risk getting a worse one and having to put another screen protector on.* There is no perfect screen out there and I feel like Samsung used lower quality panels and didn't do the electrical compensation so there wouldn't be any uniformity issues. It's your choice at this point. Either keep playing the lottery and see if you get something you can live with or return it and move on.
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
Received my fourth tablet this week, still not perfect, slightly brighter in the top left with a weird blotch towards the left top corner that's darker.

Will test for another day or say and decide what to do, it's much better than the previous devices I've received though.

Also slightly annoyed that they've reduced the price now....
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
Would you mind taking some pictures of the imperfections on your 4th device please? Thanks!
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
Sure, the image probably makes it look worse than it is though, but you can see the black blotch in the right corner which is somewhat visible under dark mode, and left top corner generally looks a little brighter.

Shame about the right corner.. :(
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
Thanks for taking the image for me to see. In the app what did you set the slider to for it be this way? Red#00, Blue #00 and what number on Green? Shame that almost all of the devices I've seen to date have these uniformity issues on green, gray (certain shades) and then the dialer and bixby home etc on dark mode. Thanks again!
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
No problem, green was fairly low, #08 I think, the others were on #00 and brightness was maxed.

Oddly enough the previous device I could also highlight the issue using red, but not on this one. :confused:
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
If that truly was on Blue #00, Red#00 and Green #08 then it appears your panel is better. On Green #08 the majority of the screen is dark haha. But I only notice the upper right corner being darker for certain shades of gray otherwise there's no problems.
[Samsung Galaxy Tab S6 Questions & Answers] Shocky2:
The lower the better as it's easier to highlight the uniformity of the display, granted you need to be in low light to really pick it up, and the camera will exaggerate it somewhat.

I'll probably keep this one, the dark right corner is the only issue, but it's not that noticeable under normal usage, if A+ was fully uniform display I'd give this one a B-, almost. :eek:

I do think this is something they could mitigate in software, but it would come at the sacrifice of detail in dark scenes, personally i'd rather have a uniform display with slightly less dynamic range in terms of black/gray detail than what we're currently getting.
[Samsung Galaxy Tab S6 Questions & Answers] zetsumeikuro:
Exactly, and it's in the dark with lower brightess that really shows the uniformity issues. Uniformity issues has to do with voltage discrepancies across the panel eg. pixel a is getting the correct amount while pixel b is getting a reduced amount hence why it appears darker. Manufacturers actually can correct this with electronic compensation and it pretty much removes almost all uniformity issues. Why Samsung doesn't do this with their tablets I have no idea other than cost savings since tablets aren't their biggest seller. I'm glad you found one that you are satisfied with and I think the odds of finding one that is perfectly uniform is practically non-existent. Below is mine on maximum brightness in the test it's not too bad, so I think I'll stick with it. I didn't give the screen a wipe down so there's some smudges there please excuse them. Just a shame that we have to play the exchange game and the*panel lotto until we have something acceptable to our eyes.