yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] Spacejock:
This has been my experience also, I was able to detect the yellow tint issue in lower brightness (albeit slightly) but i can no longer see it. I have also upgraded to kG1.
[Galaxy S II General] Leggenda:
Yes!

(10 char)
[Galaxy S II General] EarlZ:
Taken from a local forum

Left most is SGS1, DSLR was used to take the picture.. spot any yellow tint?
[Galaxy S II General] EarlZ:
The 2.0 package comes with a different kernel right.. I'll try to DL that and get a stock KG1 and see for my self but Im not gonna get my hopes up.
[Galaxy S II General] tophey:
I left Infusion 2.0 on my SGS2 but flashed CF Root for KG1 and the yellowing disappeared, it originally came with DesignGear's kernel, where as Infusion 1.6 had CF Root for KG1. The dev just changed kernels in between upgrades...

The fix seems to lie within the kernel, go figure. Maybe it has to do with colour temps? The fact this is working for others now is quite awesome though and means I'm not going crazy! :P

I'm thinking Samsung are listening with regards to this issue and hopefully this is something they have done themselves, considering Chainfire keeps the kernel as stock as possible except for the addition of root, busybox and superuser etc.
[Galaxy S II General] EarlZ:
One of the best screens ive seen so far

EDIT:

Flashed to a stock KG1, no difference yellow tint is still there.
[Galaxy S II General] tophey:
I wonder what chainfire is doing different then...
[Galaxy S II General] EarlZ:
Installed CF-ROOT KG1, still ZERO difference, nothing.
[Galaxy S II General] ram3n:
Strange . For me, it really works !
[Galaxy S II General] EarlZ:
If it does work then a camera image should show us..
[Galaxy S II General] DuoM:
Actually I have seen a phone without yellowing on the left side and without the striping problem in the notification area and on other screens. It was a display model in a phone store and that was two and a half weeks ago.

I went there specifically to check out the yellow banding problem and the striping problem (since I had already checked out the phone's functionality and performance a few times) and I spent a full hour testing the phone at various brightness levels from the minimum to about 10% to about 20% and then above. Auto brightness adjust on/auto brightness adjust off, auto dimming on/auto dimming off and all combinations of these settings.

I tested the notification area, browsing, downloaded the file in the first post, tested it in other applications, looked at it with all light around it blocked and so on. The screen was perfect.

I've been following this thread for a while, although it must be over 80 pages since I posted, so I do know what the issues are.

Before anyone asks, I didn't take a camera with me so I don't have any pictures (and I wouldn't have bothered anyway even if I'd had one). If anyone wants to though, I can tell them where the store is in the UK and they can spend an hour there with a DSLR taking pictures of the screen (hopefully it will be the same phone).

It makes me wonder if Samsung do have some perfect screens out there, which is why this hasn't blown up into a major issue like we would expect, or if a near perfect screen that was in use for several hours a day, every day simply improved with so much use (like the iPhone 4 screens). Also these store phones are on constant charge so if there is an issue that will clear up with heat that could help.

I was close to buying one there and then but it seems to be a lottery with Samsung and I also wanted to see a resolution to the posterization (colour banding) issue that seems to be caused by images being displayed in 16-bit mode rather than 24-bit or higher.
[Galaxy S II General] EarlZ:
@DuoM

Probably its a pre-retail unit, a local blogger had one and for him the screen had no issues compared to the retail.
[Galaxy S II General] Lownita:
My yellowish left side tint disappeared almost completely after flashing KG1 Kernel (CF-Root). AWESOME!
[Galaxy S II General] EarlZ:
Earlier I've said it but after flashing to KG1 and rebooting the phone 1 more time the yellow tint is actually gone! there is still a hint that the left side is darker but this is actually effing better!
[Galaxy S II General] ram3n:
Nice ! As I said It works for everyone :D

Enjoy !
[Galaxy S II General] bruflot:
I'm on Lite'ning 1.5 (KF2, and still 2.3.3) and I don't have this problem..

I've tried to say it like a million times now!

pics below
[Galaxy S II General] rlukas79:
i tried the screen settings etc, and i havent seen any yellow tint. This phone has a June 10th build, unlocked and unbranded
[Galaxy S II General] sachilleas:
Is this true ?? Is the yellow tint gone ? I can't believe it's a software issue.
[Galaxy S II General] BarryH_GEG:
In order to see if your phone is effected, you have to follow the instructions in the first post. A lot of us (including me) can't see the left side banding unless the conditions are set up like the first post and we take a pic of the screen. I can't see it in every day use but it's there. So far, no one has been able to post a pic using the conditions described that didn't show the banding. And that strange black pic posted a little bit ago doesn't count.
[Galaxy S II General] EarlZ:
@bruflot

I can actually see the yellow tint on your image despite its being black 95% of the way, look at the address bar its yellowish on the left side.
[Galaxy S II General] whmcal:
I agree. Not visible on mine until I took a photo of my screen. Quite strange. It is a very slight thing on a lot of phones. Doesn't in any way affect my usage. Like many on here, I cant see it with naked eye. I woukd have returned it if I could see it.

In this case, i'm glad I didnt go to specsavers! ( forgive the anglo-centric pun)
[Galaxy S II General] swatbee:
My phone had the darker yellow tint on the left side. I am running cognition 1.13. After flashing cf4.1 kg1 kernel over cognition rom, i can say that the yellow tint is not visible anymore. The left side of the screen is only slightly darker. Whatever is in that kernel really helped!
[Galaxy S II General] mach0boi:
I can confirm that flashing cfroot kg1 kernel solves/lessens the yellow tint issue. I wish the devs have the time to look at this especially cf
[Galaxy S II General] beppez82:
+ 1 with cf kernel little dark left and bottom side, but no more yellow tint

Sent from my Cognitive SGS2
[Galaxy S II General] EarlZ:
The darker side actually looks better on the stock SGS2 keyboard, maybe they can further work on this to make both sides even, it would be awesome.
[Galaxy S II General] bruflot:
Nah, it's just my horrible camera 'skills'.
[Galaxy S II General] sachilleas:
So... yellow tint problem solved ?
[Galaxy S II General] ante0:
I always have my brightness on 0% and never use the stock browser, nor do I see anything yellow on the notification pull down.

I tried changing to 20% and 100% but nothing yellow there :P
[Galaxy S II General] Pfeffernuss:
Sure. Amazing that it ALWAYS affects the left side of the screen, no? Your screen has it, my screen has it. Don't try to defend your previous false statement now please.
[Galaxy S II General] EarlZ:
Your not the first one to be in denial.

Yes its actually looks better on the keyboard.. wish they could balance it out on the entire screen!
[Galaxy S II General] synxx:
I read in a magazine that it was a hardware problem with the screens on a batch of sg II 's. Best to send it back to them and get it fixed as the magazine reported it only gets worse over time.
[Galaxy S II General] sachilleas:
This is completely inaccurate ! All SGS2's have it more or less. I have seen 3 screens from the same batch and they all looked completely different !
[Galaxy S II General] Kannan.Balasubramanian:
My screen doesn't seem to have the yellow tint on the left.

Instead I see white as warm or milky white when compared to my friend's phone which he bought yesterday.

His white looks more like natural cool white.

I checked the background effect and brightness and both had same.

Anybody has same effect?
[Galaxy S II General] bruflot:
I'm not trying to defend my phone. Whenever I see on it in real life there is a no yellow tint.
[Galaxy S II General] EarlZ:
Cant blame you for not having an eye for detail or knowing the issue, but dont let my comments make you feel bad, as long as theres nothing you see its good enough.
[Galaxy S II General] Tigrouzen:
Its not just Galaxy S 2 problem i buy Wave II 5 days before same thing but more then yellow !!! Then came's yellow now !!

Wave II not Amoled but Super Clean Lcd !!!

Sheet !!!

What we can do ???
[Galaxy S II General] EarlZ:
Pictures?

/10character
[Galaxy S II General] djase:
even on 2.3.4 i have lines issue on my screen i think i'm gonna sell it !
[Galaxy S II General] EarlZ:
Good luck with your new phone, hope it functions well!
[Galaxy S II General] synxx:
hmm thats strange, coz mine doesnt have it and neither does the 10-15 odd of peoples phone i have flashed either. only one of them has a line running down the left side of the screen and he said he dropped it and wasnt sure if it was there before, so not ALL of the have it more or less do they.
[Galaxy S II General] hycian:
http://www.youtube.com/watch?v=G3tBUuKNkyo

http://www.youtube.com/watch?v=fU92sG33mY0
[Galaxy S II General] mach0boi:
Just reported this to chainfire and linked him in this thread as the KG1 kernel seems to solve the issue. Hope he'll take a look at it. And to those who deny and claims they have the perfect screen without a darker left side should provide a picture of it and state the kernel they are using.
[Galaxy S II General] Chainfire:
Actually my screen still have the greenish glow when you turn it sideways compared to my friends' device. KG1.
[Galaxy S II General] mach0boi:
Thats why im so confused here. Cant say if this is a hardware/software issue but i can provide pics that i took using kg1 kernel and a custom kernel. They really are different.
[Galaxy S II General] EarlZ:
On your phone, having a stock KG1 and a CF-KG1 gives different results on the yellow tinting ?
[Galaxy S II General] mach0boi:
No. Kg1 and cf-root kg1 is the same. What i mean by custom kernel is the one built from source.
[Galaxy S II General] kryptoner:
This is almost like a Rom-thread isn't it?... 1000+ posts !
[Galaxy S II General] mach0boi:
Yeah :D expect it to grow more, as this issue is still unsolve :)
[Galaxy S II General] BarryH_GEG:
You guys are confusing two totally different issues.

1) There are variations in color temperature from screen to screen. This isn't software because every phone leaves the factory exactly the same. There's variations in the manufacturing process that causes screens to have different color temperatures. The

overall

yellow tint can be attributed to this. You can change the

overall

screen temperature with software so different ROMs/kernels can effect this.

2) There's a hardware issue, most likely electronic or heat interference, that causes a band to show on the left 1/4 of the screen. If you can't see it with the naked eye, if you follow the instructions in the first post and take a pic of it, you'll see it. The majority can't see it with the naked eye but some people can. I'm guessing those that can have a screen with a warmer (yellow) color temperature which exaggerates the banding.

If you're happy with your phone and don't want to go to the trouble of taking pics of it that's cool. But, unless someone does and can show that something's changed and the banding from issue 2 is gone, the assumption is that it's on every phone.

If you're

overall

color temperature is too warm (yellow) than exchange the phone. I'd assume there aren't that many effected that way because if there were more people would see the banding in every day use and ***** about it.

There is a third issue, QC problems. This includes suction cup circles, fingerprints on the inside of the display, dead pixels, blotches, and random lines. Those things have nothing to do with this discussion. Nor does the camera pink spot.
[Galaxy S II General] BarryH_GEG:
Painful, isn't it? ;)
[Galaxy S II General] buddy01:
Im sorry to say, but i don't have it :D
[Galaxy S II General] mach0boi:
So that's what it is. Meaning this kg1 kernel has something in it that we do not know that changes the overall screen temperature as it is the only one that can fix/lessen my phone's screen issue. Is there a big difference between this kernel and all other stock kernels?
[Galaxy S II General] mach0boi:
So you belong to that "majority" stated in #2 above your post :)
[Galaxy S II General] sachilleas:
First of all Barry thank you for your analysis and your answers..

I believe that this thread is about No 2) problem as you mention it.

Maybe a kernel with cooler colour temperature can eliminate the yellow tint (left side of the screen) ?
[Galaxy S II General] BarryH_GEG:
Have what? A screen with a warm (yellow) temperature or the left side banding? If it's the latter, and you aren't willing to take pics of it, than no one is going to believe you. You don't have to do it, but repeatedly saying you don't have it without taking the time to post a pic it isn't going to make you any friends. The reason people care is because finding a phone that's proven not to have it means something's changed in the manufacturing process. If that happens, a lot of people would send their phones in to get the screen replaced which is why they continue to participate in this long and painful thread.

I'm in the majority. I was like buddy01. Looking at my screen I couldn't see the banding and posted that "I didn't have it." When I took a pic of my phone following the instructions in the first post I could see it. Even today, knowing it's there, I can't see it in every day use. Like I said, I'm guess more phones are like this or the *****ing would be much louder.
[Galaxy S II General] BarryH_GEG:
I'm not a dev so can't say for sure if only the temperature of a portion of the display can be altered. Even if it could, based on the the size of the band and overall temperature of each individual screen, it could make it better for some and worse for others. The band and the screen temperature isn't consistent enough from phone to phone to come up with a one-size-fits-all solution.
[Galaxy S II General] mach0boi:
Then i would say you belong to the majority of the lucky ones :)

Too bad for me I can see it, and im getting irritated by it. I just wished all the kernels should have whatever it is that kg1 has that makes this screen temperature much cooler because when im on that kernel, I cant see it even if i take a picture on it.
[Galaxy S II General] sachilleas:
That's a logical assumption. But why there are so many people writing to this thread that their left side yellow tint has gone by just changing the kernel ? That's the real question.
[Galaxy S II General] mach0boi:
Thanks Barry for making this a lot clearer. Maybe i will just give up on this and wait till it fixes on his own. Or maybe wait till i get a poorer eyesight for these kind of things :)
[Galaxy S II General] eallan:
Looks to me like it has the same problem...
[Galaxy S II General] eallan:
I can't answer the first part, I'm not sure.

As far as white lines I can't see any.

Also abouth the blue tint; is this the blue tint you see from some angles? Because I have it and it is not the screen; It is a blue coating, myabe oleophobic?? I can see it when screen is turned off.[/QUOTE]

The "blue tint" i think is just the cooler color temp of this display in relation to some others, it's a non-issue to me.
[Galaxy S II General] Leggenda:
Up... ;)

(10 chair)
[Galaxy S II General] staafoo:
i'd like to see that as well
[Galaxy S II General] eallan:
Hope so as well
[Galaxy S II General] icet69:
I have the same yellow left side. But bevor I read this topic I didn't realized it. Now I couldn't stop watching it. But I'll keep the phone. The rest of it is great!
[Galaxy S II General] sachilleas:
Same excactly situation here ! I can't stop noticing it now !

Has anyone tried to send it to samsung service ? Do they accept it as a fault ?
[Galaxy S II General] staafoo:
can everybody who sees this topic please state:

Yellow tint present: yes or no

Region (CSC): XEU, DBT, etc

maybe we can relate this problem to a specific batch?

Yellow tint present: yes

Region (CSC): DBT
[Galaxy S II General] ranwej:
I can confirm that this problem is on Polish XEO devices with firmware KE1 and Czech XEZ devices with KE2 firmware... Czech devices were released some weeks later than polish so I think they are from different batch...
[Galaxy S II General] bazzztard:
Yellow tint present: yes

Region (CSC): DBT

Brought it back to MediaMarkt where i got it. Now it's under repair (they said it will take 2-3 weeks ~~)
[Galaxy S II General] dem000n:
Why can't it be fixed by a software method? We just need an app like "Color Filter Service" that can affect only a part of the screen. So we'll can make left side bridhter oe right side darker.

P.S.

Yellow tint present: yes

Region (CSC): XE
[Galaxy S II General] Seabass1:
The one that I returned had the yellow tint and was XEU. The place where I bought it from have no stock at the moment so I've not received a replacement.

One thing I did notice with mine when I still had it was that in the screen test hidden menu brought up by *#0*# is that when just viewing red, green or blue the brightness was seemingly very uniform. So does the screen only have issues with driving all the subpixels at once? If it does and there is a voltage drop on the pixels on the left side of the screen then it's possible it would affect blue the most as it uses more power than the other two primaries on an AMOLED display, and lack of blue would account for the yellow tint.
[Galaxy S II General] SBS_:
As this is pretty much universally present (more or less) I would think it's less of a manufacturing defect per se and more of a problem with the display driver and/or the manufactoring process.

My screen is also very uniform when viewing the red, green and blue test screens, and have a slight yellow tint on grey/white pictures that gets a little more pronounced the longer the picture has been on the screen.
[Galaxy S II General] r_a_c:
Yep me too, test screens no problem. All colors are uniform.

But when watching some grey picture in a dark room-->bingo. Or the pull down menu.

Do you guys also have it when you have the keyboard on for a minute or so and than you do it away and watch like the pull down menu you can see a print of the keyboard for some time in it(as in white lines where the keyboard is, also the different keys). I noticed it lastnight when I was going out, so I think it should be dark to nottice.
[Galaxy S II General] budco2000:
I got my S2 yesterday, It shipped with KE7 and not a single problem at all. I got a flashlight app and turned my screen all white and played with brightness, and no tinting of any color, Beautiful screen. GPS locked in 21 seconds out of box (First Lock) mobile data was slow, however I added some network commands to the build.prop now it's as fast as my infuse. Awesome Phone, I like it
[Galaxy S II General] dk206:
No yellow tint. Just the faint white certical lines doen my faulty one. Ke7
[Galaxy S II General] r_a_c:
Allright for the 2 people above. Could you go into a darkroom, open this site http://quizilla.teennick.com/quizzes/result/805612/611524/ and pinch to zoom till the whole picture is on the screen. Play with brightness level.

Tell me you don't see any color change towards the left side? The whole thing is very uniform in color? Also check it with the pull down menu on low birghtness in dark room.

Could someone of you take a picture of that?

Thanks
[Galaxy S II General] ranwej:
Good, take a photo of your display at lowest brightness and post here
[Galaxy S II General] stijnr:
Yellow tint present: yes

Region (CSC): XEN

Firmware: KE2

Photos of 6 different greyscale images at three different brightness levels: https://picasaweb.google.com/stijndereede/SGS2GreyTest?authkey=Gv1sRgCO_B9cPy0cD9Kg&feat=directlink

It's most easy to notice it with low brightness on the status dropdown (checkerboard pattern).

I bought mine a few days ago at MediaMarkt. I'll probably return it tomorrow, I don't mind waiting a few weeks (on an new batch?).
[Galaxy S II General] Gambero81:
i will take the phone within 2 days... how i can check for this problem? i have to lauch a specific screen page?

Thanks
[Galaxy S II General] BarryH_GEG:
Because I think they're talking about an overall yellow tint. That, or the overall yellow tint is making the band seem much more visible to the naked eye. If that's true, a ROM/kernel that makes the overall color temperature cooler would seem to make the banding go away. My phone runs cool (blue) which is why I think I can't see it in every day use. It's really hard to make comparisons without seeing the actual phones. Even pics posted are taken with different cameras, different exposures, different lighting, and different angles making it hard to draw any conclusions. There have been a couple of side-by-side pics that do show a warm and cool screen next to each other and it's really a big difference.
[Galaxy S II General] mach0boi:
Well mine, the left side is the only one affected and flashing a kg1 kernel fixes it. Maybe that can help :)
[Galaxy S II General] EarlZ:
This will be cleared up when the KG1 source code goes out maybe even devs can change the parameters to even out both sides!
[Galaxy S II General] BarryH_GEG:
Here are some pics of my phone doing everyday things...
[Galaxy S II General] sachilleas:
If this is true... then we can assume that ALL the SGS2s have this left side problem (glue or whatever) and depending on the screen's colour temperature either it's visible or not .
[Galaxy S II General] BarryH_GEG:
But I'm still guessing the new kernel made your entire screen cooler. That happening made the yellow in the banding less noticeable. I bet if you took a pic of your screen following the directions in the first post you'd still see it. At the end of the day, as long as it doesn't bother you in everyday use, it doesn't really matter whether it's there or not. I put myself in that category.
[Galaxy S II General] BarryH_GEG:
Ding. Ding. Ding. We have a winner! :)
[Galaxy S II General] EarlZ:
@BarryH_GEG

On mine the yellow tint is very noticeable as I've mention but opening websites or anything with a huge % of white colors actually drowns out the yellow tint due to the sheer brightness. But say opening some context menus like selecting a ringtone shows a yellowish shade on the white boxes, or on the virutal keyboard.

Can you post pics of your virtual keyboard (stock) with the brightness at at about 20-30% and not 0%
[Galaxy S II General] mach0boi:
Yes. That's what u were saying. And i also believe that all units are affected after you explained everything :)
[Galaxy S II General] Seabass1:
I found the colour temperature to make the yellow left side more or less obvious, with it being more visible in movie mode with it's warmer colour temperature compared to standard or dynamic.

However after flashing CF Root KG1 the yellow left side has completely vanished on my phone in both standard and movie mode. It's possibly still there if I were to take a photo but I don't own a camera. If I flash an older kernel the yellow left side comes back, as you say it's entirely possible that the colour temperature is now cooler and is masking the issue but it doesn't look massively different to me. Whatever the cause I'm happy this issue is currently gone on my phone.
[Galaxy S II General] mach0boi:
Exactly what i am saying! This kernel has some magic in it! :)