Develop Bugs

"Yellow tint" vs "Blue tint" display

So I got my One X since thursday and noticed my screen has a "Yellow tint". I compared it with my Desire HD, which is more white..
Went to some shops to compare it.. one had about the same, and the other I compared with, had a noticeble difference, like on these pictures
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Started a search at Google and found this post:
After all this trouble and bickering I finally have 2 Iphones side by side in the comfort of my home to compare.
1x 16gb Iphone 4 week 44 (Blue Tint) (My girlfriend)
1x 32gb Iphone 4 week 36 (Yellow Tint) (Mine)
Set both to max brightness:
Blue Tint:
- appears brighter
- more "White" when on the brightness screen settings
- when tilted to its side and there were no apparent "Light Bleed"
Yellow Tint:
- appears less bright
- less "White"
- when tilted LED backlit can be seen. However, only when looking at this extreme angle. Less extreme angle this is not an issue and should not be of a concern for both Screen Tints
Here's a thread describing what I mean by "tilted to side":
http://forums.macrumors.com/showthread.php?t=1030940
Here is what's really surprising
Colors:
Many look at the white screen and think the Blue Tint is a superior screen to the "Yellow Screen" but I exclusively own only IPS screens for my desktop, TV, and laptop and have compare many screens for color reproduction as well as the famous IPS viewing angles.
To do this comparison, the wallpaper settings was use for the many photos as well as Iphone dead pixel test for solid one color (black, red, blue, etc...). The lights was turned off so to get the full effects of the comparison.
Result:
Wow...the yellow screen reproduced color very accurate like an IPS screen should. Blacks look black, yellows are yellows, etc..., pictures are detailed and color accurate.
Blue Tint screen is a tiny bit of a disappointment. Colors look a little washed out. Blacks appear to have tint of gray. Color reproduction was off and not as accurate as the yellow screen. Only the blank white screen appears to be more vibrant but I suspect this is due to its unnatural color reproduction of "White".
Conclusion:
The "Yellow Tint" many of you have complained about (including myself) is not an issue but in actuality a blessing. The "Yellow Tint" has superior color reproduction...Whites, blacks, red, yellow, etc...you name it. However, on initial encounter the "Blue Tint" will appear whiter, brighter, and is reminiscent of TN screen technology and will offer an instant gratification that it is a superior screen but in fact the opposite. However, those who appreciate brightness more than color accuracy should be content with the "Blue Tint" while those who are more picture/graphical directed should opt for the "Yellow Tint". Either screen will be fine for Smart Phone operations but I prefer the "Yellow Tint" and my GF likes the "Whiter-Blue Tint"...Win Win.
Click to expand...
Click to collapse
Can someone confirm this quote? Is the "Yellow Tint" better?
Because I'm doubting about going to exchange my phone in the store

here is my feedback on this I spent time with both, both have their virtues, keep in mind out of box both will be extra yellower than usual due to lamination glue, needs few days to reach full brightness n colors
hamdir said:
yes the more i work the my One X, the more i realize things about the two screens
- Warm screen: Saturated colors, sharper contrast, less bright, more yellow/red whites, flawless color banding (display tester), no visible pixel grid, slightly better blacks. conclusion: richer like amoled
- Whiter screen: Accurate colors, less contrast, a lot more bright, colder whites, not as flawless color banding (display tester), very faint but visible pixel grid. conclusion: accurate like iphone
Both still the best screens i ever saw on a mobile device
here is my white screen from angle, you can see my semi dead pixel at the end of the word notifications, it only shows in angle and solid brightness, doesn't appear on black, its only annoying when im using the phone tilted like laid down on the table and im using whats app i can see it
absolutely no gap, flex or flicker so far
i also have the line in the polycarbonate shell like some reported, its in the lower left corner of the glossy side, perfectly straight seems part of the production process, the soft coated edge under the front screen is not as perfectly finished there is some noise in the coating and a tiny bump plus a pealed off edge, needs very close observation to see it
All not worth complaining about, i'm just showing you that even on the 9th One X i unboxed so far its still not a perfect specimen
by the way it mentions in the manual that the battery will stop charging if it gets hot as a precaution, same situation with iPad3
Click to expand...
Click to collapse

you can adjust your screen with this app; Screen Adjuster
Add for example, +12 to blue
But it makes your phone a little less smooth..

Well the HTC One X has a "Super IPS LCD2" screen whereas the iPhone 4 has a "LED-backlit IPS TFT", so while the yellow-tinted screen may be better on the iPhone, it might not necessarily be the same for the One X.

Meltus said:
Well the HTC One X has a "Super IPS LCD2" screen whereas the iPhone 4 has a "LED-backlit IPS TFT", so while the yellow-tinted screen may be better on the iPhone, it might not necessarily be the same for the One X.
Click to expand...
Click to collapse
True, but I think it's similar to the One X, despite the screen difference.
What do you think is better? The "Yellow tint" or the "Blue tint" screen?

Does one of the phones run a custom rom on the pic of the two X's.
Or why is one bar green and the other blue on the brightness bar?

Super-Veloce said:
True, but I think it's similar to the One X, despite the screen difference.
Click to expand...
Click to collapse
Yeah, I'm not saying your OP (or the guy you quoted) is wrong or anything, just some things to think about
We need to get the 2 screens side by side really to fully test them out.

r_a_c said:
Does one of the phones run a custom rom on the pic of the two X's.
Or why is one bar green and the other blue on the brightness bar?
Click to expand...
Click to collapse
Both stock.. you can change your HTC theme, when you use the HTC aluminium skin, you'll get blue instead of green

Meltus said:
Yeah, I'm not saying your OP (or the guy you quoted) is wrong or anything, just some things to think about
We need to get the 2 screens side by side really to fully test them out.
Click to expand...
Click to collapse
on the picture it shows 2 next to each other, both stock
also, I went to the city yesterday, to check with some demo models
1 got the "yellow tint" and the other one got the "blue tint, more white"

Comparing the output of the "yellow" screen with my calibrated monitor, I don't think it is over-saturated. It looks pretty "bang-on" in that aspect and one of the best phone screens I have seen in that regard. So if the "white" screen is less saturated, it is probably that one that is more wrong in that regard.
Saying that, I don't really care how accurate a phone screen is as long as it looks pleasing to the eye. In that regard, I would probably prefer the whiter one.
Often the reason for colour temperature choices of backlight is to do with the saturation.
One of my 6 HTC One Xs had the whiter screen and it was immediately apparent that it was different. It also had different viewing angles to the yellowy one. However, it was also clear that while it was brighter, that black level was not as good either.
Neither screen is perfect....and trying to find the whiter one is like a lottery because there are clearly less of those in circulation so far.
After quite a number of years we are still scrapping around to get screens with good backlights, good colour temperature, good uniformity, no bleed, no stuck/dead pixels. Technology has not moved as fast as I would have hoped.

I think the biggest issue is not which screen is the best, but that the consumer doesn't know what he's going to get. That's really bad and unacceptable. The difference is too big to be a normal situation.

Ok, than I just keep the one I got now

i know the warm one might look less appealing to the eye, since colder tint is always more eye pleasing but the warm one has a lot going on for it
better blacks and hence better contrast, flawless in banding test and most importantly no visible pixel grid (the scan-line like grid on the white version)
both are amazing, much better contrasts than the iPhone4 Retina display and iPad3
and i really think we are starting to get spoiled if we exchange for this reason

Super-Veloce said:
on the picture it shows 2 next to each other, both stock
also, I went to the city yesterday, to check with some demo models
1 got the "yellow tint" and the other one got the "blue tint, more white"
Click to expand...
Click to collapse
Gah, sorry, the pictures didn't show up for me when I posted ><
The "blue tint" looks a lot better in my opinion, I realise the "yellow tint" one may technically be better, but the "blue tint" is much easier on the eye.

I've got a blue tint display on my One X and I've had some yellow tint display devices (not One X, but some "old" Motos with LCD and some other HTCs with LCD).
I've always hated the yellow tint and I find the blue one is better.
Also, I've tried to get a blue tint using screen adjuster softwares on my yellow tint displays, without any particular success....while on blue tint displays I've been able to get yellow tint just fine.
Personally, I think blueish ones are better.

Have any of you complaining (op not intended) actually compared the two screens on THIS phone. I did a little test in the store and can confirm what has been said here about warmer tinted ips screens. The yellow one, on this phone, is amazing the contrast is deep, colors jump from the screen and I found that even the viewing angle was far superior to the colder tinted screen. I specifically bought the warmer tinted screen as, apart from displaying an entirely white screen, I and the store employees all found it to be much much better, very close to amoled.
Sent from my HTC One X using xda premium

Most people arn't returning their phones because yellow screen is not a issue for them. Interesting

schiphol said:
Have any of you complaining (op not intended) actually compared the two screens on THIS phone. I did a little test in the store and can confirm what has been said here about warmer tinted ips screens. The yellow one, on this phone, is amazing the contrast is deep, colors jump from the screen and I found that even the viewing angle was far superior to the colder tinted screen. I specifically bought the warmer tinted screen as, apart from displaying an entirely white screen, I and the store employees all found it to be much much better, very close to amoled.
Sent from my HTC One X using xda premium
Click to expand...
Click to collapse
I can confirm this except the view angles which get darker on the yellow screen
depth and contrast for sure like amoled, also it has a significant advantage if you look close the screen doesn't not show any pattern, while the whiter acer screen has a horizontal lines grid
people who updated to 1.29 are saying it cures the extra yellow if that is the case on the yellow screen, it becomes the winner in my eye
I really hate the grid on the acer screen it reduces pixel density, it's very faint but its there
I would definitely change back to the yellow/sharp if I get the change, its more impressive overall and calibration can always be fixed either by an HTC update or dev efforts

Never noticed a yellow tint on my phones original screen. When I got it back from repair it now has a yellow tint. Definately noticable to acceptable to me

If you have this issue, just call HTC and tell them about your situation, they will normally replace it with a new one.

Note II screen partially tinted

Hello everyone. Right below the notification bar, there is a tinted area going sideways. This appeared about a week ago. Only the display is affected, this doesn't appear in screen shots. When I get the device in landscape mode, the tinted area stays physically over the same pixels, so it's now upside down. I took pics of the phone by another phone. The quality is not so good but sharp eyes will notice it. Anyone had the same problem? Any ideas what should I do about this?
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The first two are screenshots and in the last pic you can see bottom half of the username box is a darker tone.

Dr Fretless said:
Hello everyone. Right below the notification bar, there is a tinted area going sideways. This appeared about a week ago. Only the display is affected, this doesn't appear in screen shots. When I get the device in landscape mode, the tinted area stays physically over the same pixels, so it's now upside down. I took pics of the phone by another phone. The quality is not so good but sharp eyes will notice it. Anyone had the same problem? Any ideas what should I do about this?
The first two are screenshots and in the last pic you can see bottom half of the username box is a darker tone.
Click to expand...
Click to collapse
Hi! It's probably screen burn in, common with amoled displays, I had it quite bad on my old phone. Caused by spending a lot of time on the messaging app, in which the part below the notification bar was grey, and the rest white. Brighter sections of the screen age faster.
I assume you use your phone in portrait mode a majority of the time?

csmiler said:
Hi! It's probably screen burn in, common with amoled displays, I had it quite bad on my old phone. Caused by spending a lot of time on the messaging app, in which the part below the notification bar was grey, and the rest white. Brighter sections of the screen age faster.
I assume you use your phone in portrait mode a majority of the time?
Click to expand...
Click to collapse
I spend much time on tapatalk and yes in portrait mode. After reading your response my eye caught the bright blue bar of tapatalk 2s stock black theme. Probably that bar caused this because the screen is so dark with this theme but that blue bar.
But this shouldn't be taken as user error right? I think I should get a replacement screen as this phone has been in my hands for just 6 months. I'm still in warranty period.
What do you think?

Dr Fretless said:
I spend much time on tapatalk and yes in portrait mode. After reading your response my eye caught the bright blue bar of tapatalk 2s stock black theme. Probably that bar caused this because the screen is so dark with this theme but that blue bar.
But this shouldn't be taken as user error right? I think I should get a replacement screen as this phone has been in my hands for just 6 months. I'm still in warranty period.
What do you think?
Click to expand...
Click to collapse
It's not an error, amoled screens age this way, it's quite normal.
I understand it's quite frustrating, once you see it, you can't unsee it.
Especially in just 6 months of use, I noticed this on my old Galaxy S after a year, and realized it was because I was on an AOSP rom for a few months which had white messaging with a grey bar.
They probably won't replace the screen, either saying there's nothing wrong with the display.
No loss trying, they might be nice enough to give you a new display! :good:

csmiler said:
It's not an error, amoled screens age this way, it's quite normal.
I understand it's quite frustrating, once you see it, you can't unsee it.
Especially in just 6 months of use, I noticed this on my old Galaxy S after a year, and realized it was because I was on an AOSP rom for a few months which had white messaging with a grey bar.
They probably won't replace the screen, either saying there's nothing wrong with the display.
No loss trying, they might be nice enough to give you a new display! :good:
Click to expand...
Click to collapse
I see... But one expect at least a year to talk about aging. It's no big deal for now but if it gets darker I don't think I'd put up with it.
Too bad I love this thing a lot but guess I'll have to avoid amoled screens for my next device...

Dr Fretless said:
I see... But one expect at least a year to talk about aging. It's no big deal for now but if it gets darker I don't think I'd put up with it.
Too bad I love this thing a lot but guess I'll have to avoid amoled screens for my next device...
Click to expand...
Click to collapse
Agreed, 6 months doesn't speak much off the quality.
I considered it too, but Samsung devices always have Amoled, and I like Samsung hardware, even though a lot of their devices are faulty, including mine.
The LCD is one of the main reasons I like HTC hardware, better color tone.

Dr Fretless said:
I see... But one expect at least a year to talk about aging. It's no big deal for now but if it gets darker I don't think I'd put up with it.
Too bad I love this thing a lot but guess I'll have to avoid amoled screens for my next device...
Click to expand...
Click to collapse
Samsung Korea replaces panels for free if they can see a burn in. People there get quite worked up about this issue on amoled displays so Samsung does replace them quietly. Heck there's even people who leave the screen on blue (apparently the best colour for getting burn ins) and get them replaced on purpose. Not sure about anywhere else though. It's worth a try visiting a Samsung service centre if you can find one near you.

xcly said:
Samsung Korea replaces panels for free if they can see a burn in. People there get quite worked up about this issue on amoled displays so Samsung does replace them quietly. Heck there's even people who leave the screen on blue (apparently the best colour for getting burn ins) and get them replaced on purpose. Not sure about anywhere else though. It's worth a try visiting a Samsung service centre if you can find one near you.
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Click to collapse
Hey, that's good news. I'll try talking to a center when I get time. Thank you very much.

tip for you guys. this issue with amoled screen is a common issue. you can check you note 2's screen burn by doing this test, open the Phone app and type *#0*#, check colors Red, Green and Blue (blue is most commonly affected). Note 2 is my 3rd smartphone with AMOLED screen for me. the first 2 phones got screenburned big time, but I took extra care of this one. it has a little screenburn in the notification area but you can hardly tell the difference even when testing it with the test I mentioned above.
here's 2 things to avoid: exposing screen to direct sunlight, keeping screen to full brightness al the time. better luck with next amoled screen.

ovidiugr said:
tip for you guys. this issue with amoled screen is a common issue. you can check you note 2's screen burn by doing this test, open the Phone app and type *#0*#, check colors Red, Green and Blue (blue is most commonly affected). Note 2 is my 3rd smartphone with AMOLED screen for me. the first 2 phones got screenburned big time, but I took extra care of this one. it has a little screenburn in the notification area but you can hardly tell the difference even when testing it with the test I mentioned above.
here's 2 things to avoid: exposing screen to direct sunlight, keeping screen to full brightness al the time. better luck with next amoled screen.
Click to expand...
Click to collapse
Thanks for the tip. Good to know that there's a way to avoid this. I use this phone as a navigator when driving so it must have gotten a great deal of direct sunlight. I'll keep the flip cover shut when not using the maps now.
Thank you all guys.

[Q] Yellow Tint ?

I just received my LG G Pad 8.3 from Newegg last night. So far, it's been a great experience. Looks good. I bought a Tab 3 8.0 during a sale at Staples last week, but when I saw the Cyber Monday deal on new egg, I jumped on it.
My question is this : After running a few processor oriented programs ( Antutu stability, etc ) , when I open up a browser tab ( white background or something similar ) I notice a yellow thin line (not a single line, however.. its a little thick) at the top end of the screen ( towards the front camera ). It is much more visible when I use the tablet in landscape mode ( when the screen rotates - and the tint shows up on the left hand side of the tablet ).
Is this normal? I can feel the heat under the screen (it is warm under the tint area) but, the tint is visible and its noticeably yellow. I do not see the blue line as some of you have mentioned on the forums.
I am not sure if this is much of an issue, to require a return. But, I just want to make sure I don't have a tablet which has a screen issue. I noticed it last night while using it after an hour of use, so I think it's visible for the most part (because someone else did not mention it to me )
Does anybody else have this issue ?
Also, compared to the Tab 3 screen, the screen has almost a 30% decrease in brightness. E.g The tab 3 at 50% is equal to the screen brightness of the LG pad at 80%. Lastly, the screen does seem to be pretty warm (color K) in comparison to the Tab 3. I don't know if that is necessarily a bad thing, but I did notice that while doing a side by side comparison of the two tablets.
Any info on the above issue would be greatly appreciated :laugh:

pic
i just got my today at the newegg cyber Monday deal and i don't have that problem. Can you upload a picture

snaketooth2007 said:
i just got my today at the newegg cyber Monday deal and i don't have that problem. Can you upload a picture
Click to expand...
Click to collapse
Unfortunately, due to my account being new, xda does not allow me to upload links or images. I've searched around the internet and I've read a couple of posts where people say that once the adhesive or "some other material " eases out on the screen, the tint slowly goes away (possibly a week or so) It is noticeably yellowish (color wise) in comparison to my Galaxy Tab 3. I'll keep on using it for the next week or so and see if the problem persists or declines.
I'll post pictures once my account reaches the link-free level. :good:

dev87 said:
Unfortunately, due to my account being new, xda does not allow me to upload links or images. I've searched around the internet and I've read a couple of posts where people say that once the adhesive or "some other material " eases out on the screen, the tint slowly goes away (possibly a week or so) It is noticeably yellowish (color wise) in comparison to my Galaxy Tab 3. I'll keep on using it for the next week or so and see if the problem persists or declines.
I'll post pictures once my account reaches the link-free level. :good:
Click to expand...
Click to collapse
I don't see it either.

RMA'ed the device through NewEgg for a replacement. The screen looked very yellowish in comparison to some review videos (posted on youtube). In addition, I wasn't able to ignore the yellow line on the screen while viewing it on white backgrounds.
I'm disappointed with the brightness and color reproduction compared to my Tab 3 8.0, but since I paid a fair price for it (249),I'm keeping the device. I'm hoping the replacement device will be better than the first unit I received through NewEgg. I've read several varying posts on the screen. It seems to me that there are units with an overall yellowish tint on them, whereas others do not have this issue. My desktop monitor (HP zr24w) has pretty good color reproduction, and in comparing my unit to the unit being reviewed on screen, my device had a much much warmer screen overall.
It was very similar to running Flux on my desktop at 3800k. None of the reviews not mention anything about the screen being so warm. Once I receive a replacement, I'll update the thread. If the problem is isolated to certain devices, I'd advise a replacement or return.

Looks like I have the same problem with my G Pad. I have a yellow patch at the top left of the screen and bottom right also.
Seems to come and go depending on usage, so I assume it's heat related?
Sent from my LG-V500 using Tapatalk

I don't have a problem with patches, but the colour accuracy of the display is terrible. Here is my G Pad at full brightness vs my full gamut RGB backlit IPS display at 80% brightness....
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The photo makes things look vastly worse than the way the human eye perceives the difference, but there is no denying that the cast is significant.
---------- Post added at 11:18 AM ---------- Previous post was at 11:17 AM ----------
I don't have a problem with patches, but the colour accuracy of the display is terrible. Here is my G Pad at full brightness vs my full gamut RGB backlit IPS display at 80% brightness....
The photo makes things look vastly worse than the way the human eye perceives the difference, but there is no denying that the cast is significant.

I only had a quick glance at this thread but I too get a yellow tint in the top part of the screen when the tab gets a bit warmer.
Within ten minutes of watching full hd mkv the brightness also throttles down.

pkoper said:
I only had a quick glance at this thread but I too get a yellow tint in the top part of the screen when the tab gets a bit warmer.
Within ten minutes of watching full hd mkv the brightness also throttles down.
Click to expand...
Click to collapse
Appears to be quite a common issue. Returned my 4th lg pad today for this reason.
Will be gunning for the sammy 8.4...
Great idea by LG, very poor execution

4th one?????
That's just crazy and a shame because else the tab is really nice.

Ok...
I think the "yellow tint" may have something to do with the adhesive. Quite sure the Display is glued to the digitizer. I had may tab on and stressed for a few hours. You can see the discoloration on almost any background. Even black, just couldn't capture it in a photo.
Has anyone had the tint go away after some time?

This is the same tab after sitting in the fridge for around 5 minutes...
I would hence say it is a hardware issue and not software or kernel related as some suggest.

dupe...

pkoper said:
dupe...
Click to expand...
Click to collapse
In your experience, does it go away with time?
I really loved the tab save for that bit...But if it stays like that forever, well...

It definately seems temperature related. As soon as the tab gets warmer the blotch/tint appears. When the tab cools down it goes away.
I don't know if it is some residual adhesive that has not dried/hardened out during manufacturing.
I still have a few days where I can just give it back, so I will be looking into it.

pkoper said:
It definately seems temperature related. As soon as the tab gets warmer the blotch/tint appears. When the tab cools down it goes away.
I don't know if it is some residual adhesive that has not dried/hardened out during manufacturing.
I still have a few days where I can just give it back, so I will be looking into it.
Click to expand...
Click to collapse
Good luck mate
Such a beautiful device giving us so many problems...4 LGs. I don't think I have it in me to go for a 5th one..

Such a nice tab ruined by the screen. Never ever LG again. Unfortunately bought of private seller who didn't keep receipt (new and sealed) and lg doesn't stand behind their product.
From my experience: HTC - yes, Apple - yes, Samsung - yes, LG - warranty not transferable.
Avoid like a plague.

michal_alton said:
Such a nice tab ruined by the screen. Never ever LG again. Unfortunately bought of private seller who didn't keep receipt (new and sealed) and lg doesn't stand behind their product.
From my experience: HTC - yes, Apple - yes, Samsung - yes, LG - warranty not transferable.
Avoid like a plague.
Click to expand...
Click to collapse
There is somebody working on that fix for your version now. Probably know something more in a week or so.

That would be nice but still won't be buying LG product again if they don't change their policy of transferring warranty to another end - user as other companies does.
As it looks like a batch of defective units they should respect warranty repair of product that has just been introduced and is well within 2 years warranty

evak2979 said:
Good luck mate
Such a beautiful device giving us so many problems...4 LGs. I don't think I have it in me to go for a 5th one..
Click to expand...
Click to collapse
Mine also has that line. Its not as noticeable as your picture. I did return another one due to the same line. The previous tab had once turned on. It didn't have to be running foe a long time.
Sent from my SCH-I605 using xda app-developers app

Q: Does your screen have a blue or yellow tint?

Hi, I've noticed that my screen seems to have a warmer color tone to it, along with an slight overall yellow tint. You can see it best on light gray colors. I also had an AT&T model for a few days (returned) and that phone had a cooler, overall blue tint to it. You could really see the difference with the phones side by side. I've talked to friends with a AT&T and a Verizon version, they said their screens have the cooler toned blue tint.
So what tint is your screen, if any?
I'm wondering, maybe Tmobile just calibrates their screens for the warmer look... or is there something wrong with mine? Thanks.

aimfire72 said:
Hi, I've noticed that my screen seems to have a warmer color tone to it, along with an slight overall yellow tint. You can see it best on light gray colors. I also had an AT&T model for a few days (returned) and that phone had a cooler, overall blue tint to it. You could really see the difference with the phones side by side. I've talked to friends with a AT&T and a Verizon version, they said their screens have the cooler toned blue tint.
So what tint is your screen, if any?
I'm wondering, maybe Tmobile just calibrates their screens for the warmer look... or is there something wrong with mine? Thanks.
Click to expand...
Click to collapse
Settings > Accessibility > Color Adjustment
turquoise circle over camera is the best setting for me.

YiZK said:
Settings > Accessibility > Color Adjustment
turquoise circle over camera is the best setting for me.
Click to expand...
Click to collapse
Yes, but what was the screen tone before you did that?

OK... no one here today? lol
So I just went to T-Mobile store to compare, side by side... The screens are their demo phones actually looked worse than mine, almost a green tone to them and not nearly as bright. One thing for sure, they did not have the blueish tint to them, was more of a green/yellow. I'm beginning to think that since every carrier seems to have messed around with the software so much, they probably also adjusted the screen calibrations as well. I'm going to check at the Verizon store and another T-Mobile just to verify

Mine is t-mobile and bright white.. The nexus 5 had the same issue, 2 different screen manufacturers one with a warmer almost yellow screen and the other blue cooler feel.. I've been lucky with both my nexus 5 and g3 both are bright white screens and no yellow. You could try swapping it and hope you get a better screen.

Why with every new phone release this topic comes up? We know every screen's not made the same, some is warm some are cool.
Sent from my LG-D851 using Tapatalk

shook187 said:
Why with every new phone release this topic comes up? We know every screen's not made the same, some is warm some are cool.
Sent from my LG-D851 using Tapatalk
Click to expand...
Click to collapse
Because when people pay $600+ for a new phone that's main feature is the screen, they want to make sure nothing is wrong with theirs.

Long story short, went to my T-Mobile store to compare to display models and possibly do an exchange. Compared side by side, trying out different stock wallpapers at 100% brightness. The two display models they had were also yellowish, but noticeably much more dim. Compared to an employee's phone, his was also yellowish and very dim. My phone looked good compared to all those!
Stopped by a 3rd party T-Mobile store on way home to see their display model. Not yellow at all, it had the cooler blue tone, but also much dimmer than my phone. Decided to go to the store where I originally purchased mine and compare to those... Both display models had the blueish tone, as well as the manager's phone - however, mine was still much brighter than all. So was going to exchange and we opened the new box... That phone was even more yellowish than mine and also much dimmer. Opened another one, just as bad! Those were the last two they had in stock, so they arranged for me to go to another store and try again.
Got to the other store, they got a new phone out for me - same yellowish tone and dimmer than mine. I didn't want to make them open every phone again, so I kept my original phone and left. The manager thinks they may have gotten an "off" batch maybe, and if that were the case, then every store in the area would have phones from this batch. He suggested that I come back in about a week when they get a new shipment, perhaps from a different batch, and try again.
So... out of 10 T-Mobile phones that I saw today:
- 4 had cooler blueish tone screens
- 6 had warmer yellowish tone screens
- My phone was brighter than all of them!
Not sure what to make of all this, lol... cannot believe the differences in the displays on this phone. And why is mine so freakin' bright?? lol... Is it a freak accident or did I maybe somehow get like a 2nd revision screen on my phone? Not sure... What do you all make of this?

I've noticed no tint on mine and it's plenty bright. I keep it at 60% and it looks great

bfranklin1986 said:
I've noticed no tint on mine and it's plenty bright. I keep it at 60% and it looks great
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Click to collapse
Mine is good and keep at 40 to extend battery just a bit. When rooted and I remove a lot of junk I will be ok for whole day.

I also noticed that (see my reply in "screen problem" thread).
http://forum.xda-developers.com/showpost.php?p=54262695&postcount=17
Open Google.com with Chrome (or stock browser) using desktop view to compare.
I used my Note 3 to compare (100% brightness).
The one has "reddish" tint seems to have more problem (dark screen, overly shaded fonts on standby screen) while "cool tint" one looks "normal". In addition, I found out cool tint one runs cool.

Nope no color tints
-Sent from my TMO LG G3 using Tapatalk

FYI, I found a corp store has both good and bad models
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DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!

mingkee said:
FYI, I found a corp store has both good and bad models
DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
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Click to collapse
too bad you didnt have the same page up on both phones for an accurate comparison.AND, some people like warm tones more than cool ones..

mingkee said:
FYI, I found a corp store has both good and bad models
DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
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Click to collapse
Excellent - thanks for that pic!
It's crazy how bad the differences are! There haven't been many reports of bad screens, but when there are, it's usually the T-Mobile version. No idea what's going on with their phones.

mingkee said:
FYI, I found a corp store has both good and bad models
DO NOT buy the one on the left (warm color). NEVER, EVER, EVER, EVER, EVER, EVER BUY WARM WHITE SCREEN MODEL!!!!!!!!
Click to expand...
Click to collapse
how do we know the brightness was set to the same level on each phone sir ?

wavrunrx said:
how do we know the brightness was set to the same level on each phone sir ?
Click to expand...
Click to collapse
Why would he lie? lol
Some of the screens on the T-Mobile models vary wildly from phone to phone. If you have a good screen, then cool... but some of us do not and are trying to figure out what's going on.

ATT model I had was warm/yellow and also a little brighter. TMO one I bought yesterday is cool/blue but a little dimmer. I always prefer the cooler blue screens.

Skizzy034 said:
ATT model I had was warm/yellow and also a little brighter. TMO one I bought yesterday is cool/blue but a little dimmer. I always prefer the cooler blue screens.
Click to expand...
Click to collapse
Yeah, the cooler blue screen is normal, you got a good one.

wase4711 said:
too bad you didnt have the same page up on both phones for an accurate comparison.AND, some people like warm tones more than cool ones..
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Click to collapse
The reason not to buy warm tone screen one is such screen appears to have more problem (heating, overshadowing, and darker screen) than cool tone screen one.
Both were adjusted to same conditions (brightness, wallpaper) but the one on the left did not have data access.
---------- Post added at 04:47 PM ---------- Previous post was at 04:27 PM ----------
wavrunrx said:
how do we know the brightness was set to the same level on each phone sir ?
Click to expand...
Click to collapse
I already set the brightness to max on both, and set no color adjustment on accessibility.
Even you may not be able to see the page, check out the soft buttons on the bottom.
In addition, I need to check the return policy if I get "warm" screen one because I mentioned above.

Galaxy Tab S Mura Effect Problem (Test yours)

I have been noticing that when I am looking at darker solid colors they sometimes appear to have a slight gradient to them. I know this is an AMOLED panel, so when a true black pixel is displayed, that AMOLED display pixel should appear completely black (as in, NO light is emitted). This is one advantage to AMOLED panels. So even at 100% display brightness, a true black screen should appear OFF.
So I created some test images in Photoshop to see to see how different shades of black and near black appear on the screen (I tested tones from 100% black to dark gray).
From my test, I found that my tablet does in fact turn completely OFF when 100% black is displayed. BUT my panel actually appears to have a slight backlight bleeding problem (Edit: Mura Effect).This is only noticeable when I am viewing colors that are very dark (but not completely black) and consistent. Also, It it's only visible in pretty dark rooms. I am not sure if I am going to return/exchange my tablet out yet.
I thought I would share my process for others to try to see if this is a common problem first...
Here is a Dropbox link to the files I made to test the problem:
https://www.dropbox.com/sh/wtfuazfn7i7z09o/AABvbRuA7-MUx_tF7xmmGSfAa
Method:
1: Open link up in the Dropbox app on your tablet (file sizes are full screen). Or feel free to download the files to your tablet and view them in the gallery app.
2. Turn screen brightness to 100%.
3. Make sure you're in a DARK room.
3. View files on your tablet at full screen.
Image 1 should appear 100% black (your screen should appear OFF). Image 1 is NOT going to be the image that will make Mura noticeable. Image 2, 3, 4 and 5 should start to appear slightly lighter as you scroll through the images. Watch out for inconsistent shade gradients like you see on my examples below (this is what tells you if you have Mura effect problems).
Here are what my results unfortunately look like. As you can see, image 1 does appear completely black (don't mind the reflections in the pictures). But the effect is pretty obvious on images 2 and 3
What are your results?
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well first of all seeing my screen on full bright but appearing to look off was pretty cool. also on mine i did not have a bleeding problem and they all seemed to have a solid difference with nothing visible to my eye.
i have the 10.5 and had to put in portrait mode to gett full screen.
thanks

Well technically your super amoled panel cannot have backlight bleed because there is no backlight. What you are seeing is referred to as a mura effect and should not be happening with this advanced of a panel. It has been confirmed that some of the 8.4 units have defective screens. On my 10.5 unit all dark colors look solid with no mura effect at all. Here is one of your sample images on my screen. Of course if you view this on your tablet you may see the mura effect. View it on your PC.

No 'bleeding' here either.

I have a T700 (8.4) and have just testet you pictures, - mine also have some Mura Effect, however not as dominant as the ones you posted here. I can see on this link here that it unfortunately seams to be an issue on most of the units -> http://forum.xda-developers.com/galaxy-tab-s/help/users-feedback-want-to-buy-8-4-t2834969
---------- Post added at 06:50 PM ---------- Previous post was at 06:37 PM ----------
ThE_SoUrCe said:
No 'bleeding' here either.
Click to expand...
Click to collapse
Which version do you have?

AZBoomer said:
1: Open link up in the Dropbox app on your tablet your tablet and view them in the gallery app.
2. Turn screen brightness to 100%.
3. Make sure you're in a DARK room.
3. View files on your tablet at full screen.
Click to expand...
Click to collapse
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?

BarryH_GEG said:
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
Click to expand...
Click to collapse
This is XDA. What did you expect?

Omg thats terrible

rockbastard said:
I have a T700 (8.4) and have just testet you pictures, - mine also have some Mura Effect, however not as dominant as the ones you posted here. I can see on this link here that it unfortunately seams to be an issue on most of the units -> http://forum.xda-developers.com/galaxy-tab-s/help/users-feedback-want-to-buy-8-4-t2834969
---------- Post added at 06:50 PM ---------- Previous post was at 06:37 PM ----------
Which version do you have?
Click to expand...
Click to collapse
T705. I noticed 3 green dots though.

I do not notice anyyhing like that on my 8.4.
I would get an exchange if you still can. Never know what the ramifications in the future to the display may be.

BarryH_GEG said:
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
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Click to collapse
Exactly this. Some people have waayyyy too much time on their hands, I don't know how they manage to live their lives if this sort of nothingness is enough to trouble them. What exactly are you intending to do with this tablet, color time a Hollywood movie?
Must be a real killer for some people every time they have to change channel on their tv, I have to wait 0.4 seconds for the next station to come on. It's terrible.

Nobody can see this with their naked eyes.
Everyone that posts about this use ultra high iso pictures to show it.
Its a non problem.

DAvid_B said:
Nobody can see this with their naked eyes.
Everyone that posts about this use ultra high iso pictures to show it.
Its a non problem.
Click to expand...
Click to collapse
It actually is pretty noticeable even at 25% brightness when you're just using the tablet normally. Now it doesn't show up everywhere. You can see it pretty easily in the notification shade and in the settings menu. Or when you open up Chrome with no tabs, that background is not perfectly solid and I notice it every time. You can also see it on darker full screen photos too.
Still not sure if I care enough to exchange it. Although, I am very picky about image color representation as I am a photographer and this panel on AMOLED Photo mode matches my calibrated monitors pretty well, but that dark gradient just bothers me sometimes!

AZBoomer said:
It actually is pretty noticeable even at 25% brightness when you're just using the tablet normally. Now it doesn't show up everywhere. You can see it pretty easily in the notification shade and in the settings menu. Or when you open up Chrome with no tabs, that background is not perfectly solid and I notice it every time. You can also see it on darker full screen photos too.
Still not sure if I care enough to exchange it. Although, I am very picky about image color representation as I am a photographer and this panel on AMOLED Photo mode matches my calibrated monitors pretty well, but that dark gradient just bothers me sometimes!
Click to expand...
Click to collapse
Is yours also the 8.4 version?
3 I work with all have the 8.4 (T700) version myself included. All have visible Mura effect at normal settings. Samsung run an ad campaign here in Denmark, where you can buy and try for 30 days one did an exchange - but same result, visible Mura effect - however under normal working conditions is not a big issue.. Bur as a still photo viewer I understand your point.

Mine has dark mura at top right corner with dark banding at the lower screen

rockbastard said:
Is yours also the 8.4 version?
3 I work with all have the 8.4 (T700) version myself included. All have visible Mura effect at normal settings. Samsung run an ad campaign here in Denmark, where you can buy and try for 30 days one did an exchange - but same result, visible Mura effect - however under normal working conditions is not a big issue.. Bur as a still photo viewer I understand your point.
Click to expand...
Click to collapse
Yes, I have the 8.4 inch version. If it really is that common, I may just keep it. It does bother me, but overall I am happy with the tablet and am happy with the battery life. Not sure I want to chance getting a new one it it not being any better...We'll see though.

BarryH_GEG said:
Even if there is a problem if the only way to realize is to create conditions no one would ever encounter (100% brightness in a dark room on only specific backgrounds) is it really a problem?
Click to expand...
Click to collapse
These are the conditions to make it easily noticeable. I on my hand did notice the issue on regular use of the tablet:
- First noticed it while reading an e-book, the tint of the background was not homogenous.
- Then I noticed it while browsing the tablet options: "huh, the gradient on the background is not regular.. oh wait, it's not supposed to be a gradient".
- And now I notice it while playing movies, when the scenes are dark.
100% brightness is not a requirement for it to be visible. Actually, minimal brightness while in the darkness works very well at revealing the issue.
However, it is extremely unlikely that someone ever notice the issue while using the tab in daylight. In my case, I use it mainly in the darkness, and often get to see it.

Damn you OP, mine got it too...anyway, it isn't really noticeable with most content so I just keep mine since it seems very common anyway.

That's defective. You guys should not be satisfied at keeping it like that. I have no such effect. I'd take it back if it were mine. I didn't pay $600 for a tablet to have a defect like that

Inkedadrenaline said:
That's defective. You guys should not be satisfied at keeping it like that. I have no such effect. I'd take it back if it were mine. I didn't pay $600 for a tablet to have a defect like that
Click to expand...
Click to collapse
I don't know if it's defective, but if it is it's a defect that affects most AMOLED screens and all of the Tab S 8.4 I could test it for (3 of them). My Galaxy SII is affected as well, so is my PS Vita. And my friend's. And his Note II.
I returned my unit twice, once through the online store and once through the physical one, all of them suffered from Mura effects. Either I am utterly unlucky, or a large amount of the tabs are affected.