[Q] Screen red/burgundy tint on blacks in darkness?

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grant7

Member
May 6, 2013
9
1
Hi,
Samsung S4 owners please help. Just received mine and everything looks good, however the screen has a red/burgundy tint on blacks in total darkness.
For testing I closed the camera lens and took picture so it's totally black, when you look at the picture in the dark it's not black and has red colos in it comparing to my Note ii and LG Optimus G.
If you have the same problem please post, so I can return it in two week period or switch for HTC ONE.

Thanks,
 

theo1998

Senior Member
Jan 24, 2009
108
8
Winnipeg
Hi,
Samsung S4 owners please help. Just received mine and everything looks good, however the screen has a red/burgundy tint on blacks in total darkness.
For testing I closed the camera lens and took picture so it's totally black, when you look at the picture in the dark it's not black and has red colos in it comparing to my Note ii and LG Optimus G.
If you have the same problem please post, so I can return it in two week period or switch for HTC ONE.

Thanks,

I have this too, it's not the OS as the screen was very very dark red when I was soft-bricked.
 

grant7

Member
May 6, 2013
9
1
Confirming

Just back from 2 AT&T stores to check if demo S4 has the same problem, and confirming YES the blacks in total darkness is more like super dark dark red not 100% black.
The AT&T rep confirmed and said "If you don't like it, return it".
Also I found topic that covers this problem regarding red subpixels being active when displaying black , but the international version is fixed after firmware update.
So I think only US AT&T models affected with no fix for now. :(
 

ChaseBroyles

Senior Member
Jul 15, 2012
206
74
Princeton,WV
ChaseBroyles.com
Another thing I found is that if I scroll really fast on a black background there's a reddish haze on the screen.

Turn your brightness all the way down, go into a dark room, open settings, and scroll really fast up and down.

Does this happen to everyone else?
 

grant7

Member
May 6, 2013
9
1
Another thing I found is that if I scroll really fast on a black background there's a reddish haze on the screen.

Turn your brightness all the way down, go into a dark room, open settings, and scroll really fast up and down.

Does this happen to everyone else?


Just checked and I don't have any haze when scrolling fast, but do have red subpixels being active when displaying black.
 

GiantJay

Senior Member
Jul 2, 2012
1,553
601
Omaha, NE
Hi,
Samsung S4 owners please help. Just received mine and everything looks good, however the screen has a red/burgundy tint on blacks in total darkness.
For testing I closed the camera lens and took picture so it's totally black, when you look at the picture in the dark it's not black and has red colos in it comparing to my Note ii and LG Optimus G.
If you have the same problem please post, so I can return it in two week period or switch for HTC ONE.

Thanks,

I Have the Sprint model and also experience this problem. There are several issues I have with this phone. Lag, software glitches, keyboard issues etc. And these occur on every S4 I have used which is several, none Exynos versions though. They rushed the release is what I think. They should have fixed the issues being compained about before release.
 

sam2c

Senior Member
Feb 8, 2012
245
82
Another thing I found is that if I scroll really fast on a black background there's a reddish haze on the screen.

Turn your brightness all the way down, go into a dark room, open settings, and scroll really fast up and down.

Does this happen to everyone else?

There is a long thread in the international S4 forum discussing this. There are two different screen problems, either red pixels are on when displaying blacks, or you get smearing on greys/purples over blacks. Samsung just released a firmware updste for the intrnational version that gets rid of the red pixels for those who had that issue, but it makes their screen smear. So no everyone has the smearing problem with tbe international version. Hopefully they can address the smearing problem with firmware soon. I can imagine some games being affected pretty badly by this issue.
 

grant7

Member
May 6, 2013
9
1
Samsung S4 AT&T Version Red subpixels on black stay on.

See attached sample image. Easy to see in total darkness when brightness all the way down, red pixels visible on any black, picture, menu, web etc.. except boot logo.
The image made in total darkness, for black sample opened 100% black background.
 
Last edited:

GiantJay

Senior Member
Jul 2, 2012
1,553
601
Omaha, NE
See attached sample image. Easy to see in total darkness when brightness all the way down, red pixels visible on any black, picture, menu, web etc.. except boot logo.
The image made in total darkness, for black sample opened 100% black background.

Yep that's what mine looks like.

Sent from my SPH-L720 using Tapatalk 2
 

grant7

Member
May 6, 2013
9
1
AT&T Update did not resolved the red subpixels on problem.

Received update this morning from AT&T. There was a hope for a fix of the red subpixels glow, but the problem still the same after update.
Returning mine. :rolleyes:
 
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_Burst_

Senior Member
May 20, 2010
889
332
San Antonio, TX
I had this on my first S4. My GF didn't on hers. I took it back to the store and they looked at me like I was crazy (didn't argue that fact).
Rep took it to the back to show manager and pull another phone and he told me that this was common enough that they got an email about it from HQ.
New unit didn't have the problem.
Not only are blacks with a redish tint, but another way to tell if the screen has this problem is press the menu button. Then, it is easier to tell a good screen vs a messed up screen because they are clearly a different color. Easier to show them that instead of minimum brightness, in a dark room, you can see it I swear kind of argument.

I wish I would have taken a pic to post the differences.
 
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grant7

Member
May 6, 2013
9
1
I had this on my first S4. My GF didn't on hers. I took it back to the store and they looked at me like I was crazy (didn't argue that fact).
Rep took it to the back to show manager and pull another phone and he told me that this was common enough that they got an email about it from HQ.
New unit didn't have the problem.
Not only are blacks with a redish tint, but another way to tell if the screen has this problem is press the menu button. Then, it is easier to tell a good screen vs a messed up screen because they are clearly a different color. Easier to show them that instead of minimum brightness, in a dark room, you can see it I swear kind of argument.

I wish I would have taken a pic to post the differences.

Thanks for reply,
So you just went to store and replaced bad one for good one? So maybe it's a first ones with this problem? I visited 2 different stores and demo units red as well, they said that all devices they have in stock is the same shipment 60 or so units. Will try next week.
Thanks again.
 

antde201

Member
Apr 13, 2011
43
2
Thanks for reply,
So you just went to store and replaced bad one for good one? So maybe it's a first ones with this problem? I visited 2 different stores and demo units red as well, they said that all devices they have in stock is the same shipment 60 or so units. Will try next week.
Thanks again.
Yea, just head over to AT&T and swap it out. A display issue such as this is very rarely addressed in firmware and has to be replaced.

I replaced my unit yesterday no questions asked(kinda) as they're very aware of the myriad of issues some early devices have. Just don't use too much tech jargon like "pixels" "true black" "contrast ratio" etc. or you might get blank stares as I did lol. Good luck.
 

zombicidal maniac

Senior Member
Jun 28, 2010
136
42
New London, CT
I have the T-Mobile version and have this also. I noticed it when I first turned it on. I had an S3 before so I know how black the AMOLED screens can get. I don't mind much since it's just when it's displaying blacks and I haven't seen it much except for boots. I think I have the smearing too but I just look at it as motion blur :silly:
 

gflare

Senior Member
Aug 2, 2010
186
18
Baltimore, MD
does this happen on all models, random models, or only white/black models?

I'm curious to see if this is a potential side-effect of that semi-transparent digitizer (like the notification screen-glow thing that was mention in other threads).
 

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  • 3
    See attached sample image. Easy to see in total darkness when brightness all the way down, red pixels visible on any black, picture, menu, web etc.. except boot logo.
    The image made in total darkness, for black sample opened 100% black background.

    I also have the red subpixels on my sprint sgs4
    3
    Yea, just head over to AT&T and swap it out. A display issue such as this is very rarely addressed in firmware and has to be replaced.

    I replaced my unit yesterday no questions asked(kinda) as they're very aware of the myriad of issues some early devices have. Just don't use too much tech jargon like "pixels" "true black" "contrast ratio" etc. or you might get blank stares as I did lol. Good luck.

    you are completely wrong.

    It is software based. Mine did this prior to the sprint OTA; However, afterwards, that went away and the blur issue came about

    that proves its not an unfixable thing..everyone has it....its jsut a matter of noticing it.....
    1
    AT&T Update did not resolved the red subpixels on problem.

    Received update this morning from AT&T. There was a hope for a fix of the red subpixels glow, but the problem still the same after update.
    Returning mine. :rolleyes:
    1
    I had this on my first S4. My GF didn't on hers. I took it back to the store and they looked at me like I was crazy (didn't argue that fact).
    Rep took it to the back to show manager and pull another phone and he told me that this was common enough that they got an email about it from HQ.
    New unit didn't have the problem.
    Not only are blacks with a redish tint, but another way to tell if the screen has this problem is press the menu button. Then, it is easier to tell a good screen vs a messed up screen because they are clearly a different color. Easier to show them that instead of minimum brightness, in a dark room, you can see it I swear kind of argument.

    I wish I would have taken a pic to post the differences.
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