My findings with the s4 screen

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Cristi10

Senior Member
Mar 20, 2014
162
23
So as you know the kit kat update brought back the smearing (which was more or less hidden until know) and is the most noticable when you are on the lowest brightness. But also there is a green tint on lowest brightness, most noticeably in videos. Now as you know apps like screen adjuster reduce this problem but what i found is that when activated screen adjuster (15 on contrast in my case) does the following: i was in youtube app to test and in portrait the video didn't had any green tint, while in landscape the tint appeared. And with some other video player (like mx) the tint was gone and the smearing was reduced or even gone. Note that in mx i wasn't using the screen adjuster app. So maybe just maybe there is something in the software that samsung messed up. If a dev can look into this maybe we can figure out something.

Thanks in advance and i apologise if these things were known and i wasted your time.

Sent from my GT-I9505 using XDA Free mobile app
 
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Abby Oddie

Member
Aug 13, 2014
40
0
Been using Samsung phones aswell as others for years and never had a single fault. They all latest over a year before being sold on with zero issues. I've had an S4 since launch and it's still working perfectly. As far as reliability and build-quality goes Samsung is the best in the business, and by build quality I mean how well its assembled and reliability NOT the material the case is made of which many of you care so much about.
 
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Chea2k

Member
Dec 13, 2013
11
0
Cristi10 said:
So as you know the kit kat update brought back the smearing (which was more or less hidden until know) and is the most noticable when you are on the lowest brightness. But also there is a green tint on lowest brightness, most noticeably in videos. Now as you know apps like screen adjuster reduce this problem but what i found is that when activated screen adjuster (15 on contrast in my case) does the following: i was in youtube app to test and in portrait the video didn't had any green tint, while in landscape the tint appeared. And with some other video player (like mx) the tint was gone and the smearing was reduced or even gone. Note that in mx i wasn't using the screen adjuster app. So maybe just maybe there is something in the software that samsung messed up. If a dev can look into this maybe we can figure out something.

Thanks in advance and i apologise if these things were known and i wasted your time.

Sent from my GT-I9505 using XDA Free mobile app
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Click to collapse

I can't say that I've had any problems with my s4 since upgrading to kit kat
 
M

memoryeffect

Member
Mar 17, 2013
22
3
Since the s4 true black pixels get completely turned off, the smearing you see are those pixels turning on again. It's a hardware thing.
 
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jimmy2x2x

Member
Oct 20, 2010
32
10
Can't say I've noticed any difference. Can you elaborate at all?

Sent from my GT-I9505 using Tapatalk
 
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jimmy2x2x

Member
Oct 20, 2010
32
10
I see what you mean now, so is this a hardware limitation or somehow linked to the software (os version)

Sent from my GT-I9505 using Tapatalk
 
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MarkMRL

Senior Member
Jul 1, 2011
549
109
jimmy2x2x said:
I see what you mean now, so is this a hardware limitation or somehow linked to the software (os version)

Sent from my GT-I9505 using Tapatalk
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Hardware limitation of OLED screens. Pixels take some time to go from completely off (black) to a lighter color such as blue or gray resulting in that weird trailing. AFAIK, the older version of the software didn't use pure black (pixel off) in the menu but a slightly lighter shade of black (so that the pixel would not be completely off). I still noticed it in some moving scenes in movies though when pure black was used.

For the green tint I don't know, I remember when I switched from LCD on my Sony phone to the S4 I noticed it had tinted whites and weirdly saturated colors but now I'm used to it and I don't notice it anymore and I actually kinda like the saturated colors even though they aren't very realistic.
 
X

XERW

Member
Mar 9, 2014
23
4
Denpasar
xerw.deviantart.com
Haven't seen one since switching from my bloody ****ty Galaxy W I8150 which had a really bad white smearing effect (v3 HW rev). Using the exynos version with MFD: 2013:12:24 (christmas eve baby!)

There MIGHT be differences with screens manufactured at different time/version/revision but that's just an uneducated guess.
 
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    Cristi10
    So as you know the kit kat update brought back the smearing (which was more or less hidden until know) and is the most noticable when you are on the lowest brightness. But also there is a green tint on lowest brightness, most noticeably in videos. Now as you know apps like screen adjuster reduce this problem but what i found is that when activated screen adjuster (15 on contrast in my case) does the following: i was in youtube app to test and in portrait the video didn't had any green tint, while in landscape the tint appeared. And with some other video player (like mx) the tint was gone and the smearing was reduced or even gone. Note that in mx i wasn't using the screen adjuster app. So maybe just maybe there is something in the software that samsung messed up. If a dev can look into this maybe we can figure out something.

    Thanks in advance and i apologise if these things were known and i wasted your time.

    Sent from my GT-I9505 using XDA Free mobile app
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