[Q] Screen colors uneven?? Normal? - Galaxy S 4 Q&A, Help & Troubleshooting

Hi all,
I know there is alot of discussions surrounding yellow tinting and yellow colors , or uneven screens on S2 , S3.
But I haven't seen much of it talked about for the S4.
My S4 has slightly darker colors on the top of the phone. The difference is quite visible on a white background, and very visible on a grey background.
Here some photos showing the issue:
From the naked eye the differences are not as great as shown on the photos. however it is there. sometimes its darker sometimes its not so much darker. but visible and very evident that the screen colors are not even.
Is there any problem with this? Do I need to take it to Samsung for repair?
When I'm using google for example the top of the screen is like bluish....and the other half of the screen is white.
Because I haven't seen many discuss about this issue, I'm wondering whether its just mine?

You have a defective screen.
Take it back for repair or replacement

Related

[Q] bought a Galaxy SII, is this normal on the amoled?

hey guys so i have this phone and i like it, not awsome all the way, but its great so far, astonish performance and an OK camera, anyways heres what ive noticed and i dont wanna send it back before im sure its a problem:
-When i view its screen turned on from different angles the color hue slightly changes a bit to blue, this is most noticeable in bright images with alot of white level for example, is such thing normal?
Also is there any particular thing i should look for to know if its working properly or not? ive heard alot of ppl had problems with the screen, what are the steps that i need to take to check if mine has or does not have the same problems.
Thanks in advance!
ill be getting my S2 tomorrow but from what i understand this is normal on the phones ive owned in the past
all the screen issues i heard on the forums are
black spots
and yellow color from the left side of the screen
qwerty warrior said:
ill be getting my S2 tomorrow but from what i understand this is normal on the phones ive owned in the past
all the screen issues i heard on the forums are
black spots
and yellow color from the left side of the screen
Click to expand...
Click to collapse
hmm thanks i dont have yellowish colors or black spots on mine, when u say the phones u owned in the past, were they all AMOLED? because AMOLED screen is suposed to avoid this kind of crap unlike LCD
TheWarKeeper said:
-When i view its screen turned on from different angles the color hue slightly changes a bit to blue, this is most noticeable in bright images with alot of white level for example, is such thing normal?
Thanks in advance!
Click to expand...
Click to collapse
True ... when screen are turned and seen from different angles, the color hue slightly changes a bit to blue and that's normal.
But on my SGS2 no yellowish colors or black spots.
OP, the slight bluish hint is normal.
Also normal is some moderate banding on plain gray background.
Also normal is moderate yellowish left side. To check how severely your screen is effected, switch OFF orientation sensor, display a full screen gray image on about 25-50% brightness, look at it in portrait orientation, than flip the phone 180 degrees, so it is upside down. Do a few flips, you will notice the difference in colors on the left and the right sides. Most people do not see it by just looking at the image, they need a real precise side by side comparison like what I just described.
All these issues in moderation are normal for Amoled. What is not normal is dead pixels or damaged screens underneath the glass, but these issues are rare.
Pity you dont have a search button .
http://forum.xda-developers.com/showthread.php?t=1127649
jje

Screen tint and viewing angles questions and opinions please

Ok well I would like to get peoples feedback and opinions on their screens.
My story. Broke my GNote II instead of paying to replace LCD decided to upgrade with my carrier.
First Note 3 I bought was bright with nice whites and great viewing angles. But it has the dreaded pinkinsh purple screen tint issue in the lower 3rd of the screen more so on the right side. This is subtle and is less evident in brighter conditions or higher screen brightness. At low brightness and in dark environments it is particularly visible on white and grey backgrounds. Went to store to exchange and they refused given they could not see the defect. I came online here searched around and it seems this has been an issue on the GS4 and people have mentioned it on the new Note 3.
Convinced my carrier to send me a replacement and I will return the original to them. Well got the replacement 3-4 days ago. The unit seems quite different. First off the screen is overall a bit more yellow at face on viewing angles and perhaps a hair less bright at similar settings though hard to tell. The bottom is not color shifted puple. The screen color is more homogenous. However the viewing angles are completely different. Here while the brightness stays goo dlike the first when angling the screen, the colors shift to a more aqua color with minor angle variation. (guessing 20-30*) whereas the original unit has virtually no color shift at almost 90*.
I probably have to send back a unit in the coming day or 2 and make a final decision. In theory I could try to ask for a third model, however it was with a lot of difficulty and threats to leave my carrier that they relented in the first replacement. SO I likely will have to stick with one of these or return both and use my somewhat broken note 2 and wait for something else.
I am wondering if any of you out here have similar pink/purple tint issues at one end of your screen. Or if you have issues with significant white color shift when angling your screen more than 30* in either portrait or landscape. Also if good or bad can you check build date on your phone (should be under battery). FInally did you or will you replace it? Was replacement better or worse?
Also if in my shoes would you go for the better looking screen with the pink issue or the more consistent looking screen that is a bit more blue yellow.
Thanks!
lots of postings about this, i even made a thread regarding this:
http://forum.xda-developers.com/showthread.php?t=2463786
some people call it nitpicking, but as you can see i'm feeling with you...
TML1504 said:
lots of postings about this, i even made a thread regarding this:
http://forum.xda-developers.com/showthread.php?t=2463786
some people call it nitpicking, but as you can see i'm feeling with you...
Click to expand...
Click to collapse
I know you did and I posted some long posts there and the thread kind of died.
I have some specific questions here as well as asking what I should do in my case.
I had a note 2 and remember there being perseus kernel and with STweaks one could shift color etc and make it how you like. I am thinking going with the more uniform color model as I am sure the slight yellow tint can be corrected and the blue tint on viewing angles is no worse than my note 2 looking back so I will get used to it I imagine. That said the first screen really has great screen but the purplish pink right bottom corner bugs me on white and grey screens ( not noticeable on high brightness though) and often reading on websites etc indoors I notice it enough that it bugs me.....
So for anyone who cares here is an update on my plan. The more uniform note 3 is more yellow/green tinted whites compared to the other one that is whiter/redder. That said if I use one of these screen filter style apps that exist in the play store, I can modify the overall screen into however I like.
Downside is that it means a persistently running app to do it with whatever effect on screen longevity and battery.
Now on my Note 2 which is also yellower, I was running perseus kernel and the s tweaks app and was able at the kernel level to modify the color to get better whites. I imagine it is only a matter of time before someone can do that for our note 3. I can handle the viewing angle color shift as the device is in my hand and not on a table when i use it where it might be off angle viewing by a large amount. And even then, the tinting of white has a bluish shift and now worse than a yellowing shift my wifes iphone has off angle or my note 2 did.
Would love tohear from others and what their screens are like and or developers who might have the means of modifying color at kernel level the way Andreilux did on the note 2
I checked almost 10 note 3s bkack n white as well..and found only 1 set.it has no yellow tint and no gray lining.
nabilsweet007 said:
I checked almost 10 note 3s bkack n white as well..and found only 1 set.it has no yellow tint and no gray lining.
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Click to collapse
You checked 13 notes and 12 of them were either yellow tint or what gray lining issue?
How did you manage to check so many.
Can you check the following. Look at the phone screen face on the tilt either up down or side to side about 30 degrees and tell me if the white on the screen turns bluish.
One of my phones does this and has the yellower whites. The other does not and has better whites but has some purplish discoloration in the lower right part of the phone.
Any one here try a new kernel from the android development sections?
Some of them talk about being able to modify screen color. Am wondering if this can be a fix for my issues.

Screen uniformity and issues

Yo.
I'm still wondering if my S5 screens is as good as it's supposed to be. I have 2 major concerns, screen uniformity and purple trails.
I come from an ancient S1, and nothing of this happened. I have attached a single color pic that shows clearly how screen have a soft gradient from top to bottom on my phone. When I put basic colors (RGBYWB from test modes or apps) nothing of this is apparent at all, and screen looks gorgeus, but this color and some other grays show what I'm talking about. I would be grateful if you load the pic in full screen mode and tell your impressions. Offscreen shots would be welcome too.
Also, about the purple trails when moving on screen pitch blacks, it affects every screen or only some unfortunate ones? S1 never show anything similar. Max bright reduces it, but nor completly.
Greetings.

lighter pixels on home screen with no apps default background and also bottom right w

I've had 3 s6 edge plus now the 1st one appeared to have a great screen but i didn't check properly the second had a terrible screen with the green pixels on the default background in a circular motion and the third has less of it but on bottom right on purple background the pixels colour is not uniform some seems lighter or darker than others. Is this just the nature of amoled screens that each pixel is different that you won't get a perfect screen where all the pixels under a green or purple background are even?
On full black or white it seems ok i just noticed such differences in screen quality between the devices. Is getting a near perfect screen with all pixels the same colour ie not faded or darker impossible?
I should have kept the first one cos its screen was good it was manufactured in august whereas the next 2 i got were part of same assembly batch made on same day 13/10/2015.
I just got fed up in the end as i ordered online and had to wait for replacements to be sent.
Do any of you have these screen issues on the default background of green if you look on bottom half of screen left side there seems to be this weird circular heat pattern of lighter pixels some dimmer than others. On a purple screen background the bottom right there purple is not even. I know that's not right but is it very difficult getting an amoled screen which is near perfect?
Im not sure if this is a sign my pixels are fading or wearing out or it is screen burn in the factory but samsung quality control is abysmal they let through any screen in hope the average consumer wont pay attention to uneven screen.
Is it normal to have a amoled screen like this?
As in imperfect colours pixel degrading out of the box. The purple walkpaper top left i can see that it's not all one colour and some of the pixels look faded is this standard and luck of the draw getting a good screen?
I have not done a screen test in fear of how bad it might look but on black screens and all white it looks good it's just the wall papers i can see splooges of uneven colour how bad or good is every one elses screen?
I think i notice it more because i came from an s4 so bigger screen equals more noticeable imperfections.
I didnt test my original one properly but it's screen seemed really good on the default wallpaper i duno what it woulda shown on purple.
Is this screen burn or just faded pixels from over testing out the box?
Why is it so f'ing difficult trying to get a perfect samsung screen? ??

Galaxy S7 edge uneven color temperature

As you know Galaxy S6 and other old smartphones with AMOLED displays have one big problem and that is uneven color temperature aka. yellow tint aka. green tint. I have the same problem with my Galaxy S7 edge. When I open one website with white background I can clearly see that white on the right part of the screen is darker than white on left part of the screen. I replaced 2 screens and every screen have this problem. But I am 100% sure that there are screens which have even color temperature. It sux that you have to be lucky to get S7 edge with good display.
My question is...is there any app (I don't care if it is an app with ROOT need) which can change color temperature only on some parts of the screen? I am sure that this problem could be fixed with an app. I have an app Screen Balance and this app really nicely improve white color on my screen. On my phone white color was at first more yellowish but now it is a lot like it should be because of this app. But main problem still exists - on the right part of the screen white color is more darker.
Thank you guys.
Nobody knows?
There's an app for tweaking colour temperature, and it is without root. But to solve the problem that makes your phone's colour temperature uneven, I'm sorry, I don't know that..
Never heard of anything that does what you require.
....

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