yashsingh1/xdaforums huggingface dataset:
[Galaxy S 4 Q&A, Help & Troubleshooting] tclocki:
I think all these issues (auto brightness/contrast even with all the auto features are set off) are present in all devices.

I really believe it is more of a software issue. Playing games that have different scenes in it, you won't notice the brightness, or contrast changing. At least that's what I've observed. So far, these are the only games installed on my s4, arcane legends, temple run 2, shadowgun dead zone, and dungeon hunter 4. I havent observed those screen issues when I play any of those four games.
[Galaxy S 4 Q&A, Help & Troubleshooting] DanteSSS333:
I also have Dungeon Hunter 4 and the smearing is definitely visible when playing in a dark area.
[Galaxy S 4 Q&A, Help & Troubleshooting] ausdim:
Guys i have a tiny line at my screen visible at grey backround and with the brightness at full...

http://xdaforums.com/showpost.php?p=41727324&postcount=6

Anyone have the same but at different position at the screen?

Thanks
[Galaxy S 4 Q&A, Help & Troubleshooting] Bosstazem:
I'm so glad you guys notice these. Like i'm not alone.
[Galaxy S 4 Q&A, Help & Troubleshooting] DanteSSS333:
Yes, every Amoled screen has those lines, since the pixels arent 100% equal ;)
[Galaxy S 4 Q&A, Help & Troubleshooting] btemtd:
wtf.. What lines o.o

---------- Post added at 12:49 AM ---------- Previous post was at 12:38 AM ----------

I dont get this weird thing your describing, again All I am getting is Purple smear.... How come none of the I9500 people are flashing that kernel that supposedly fixes purple smear? Its from samsung one of the users reported a few posts back

atir usman buttt

Username
[Galaxy S 4 Q&A, Help & Troubleshooting] GT-I93oo:
same problem with my s4
[Galaxy S 4 Q&A, Help & Troubleshooting] atir usman butt:
Its stock kernel s4 diffrent country
[Galaxy S 4 Q&A, Help & Troubleshooting] Obagleyfreer:
Yup I have these lines too. Once you know they are there they are so annoying, it's all I notice now.

Mine aren't vertical like yours though, I have 3 running horizontally across my screen.

At first I noticed it on greys but if you look for them you can see them on most colours.

I have already replaced one handset because of this and my second was a lot better but still very noticeable.

I am currently trying to fight for another replacement but the staff in the store I bought it from can't see them!

All I'm thinking is that as I have had 2 devices and both had them maybe it's just something we have to put up with.
[Galaxy S 4 Q&A, Help & Troubleshooting] ikyeye:
hello everyone

I have issue with my i9500 screen.

I installed Display Tester app from Play Store. I run the Defective Pixel Detection test.

In red, green, and blue color, it doesn't have any problem (or it's just my eyes). But, in white color and grey, there's kind of dark gradation in upper side of screen. So basically the screen appear brighter in the bottom but darker in above. I've tried turning off auto and maximize the brightness, but the problem is still there.

It's very noticeable too in Viewing Angle test.

So anyone have this issue? and (perhaps) the fix?

EDIT: mine is running on latest OTA update (XUAMDK baseband and XXUAME1 build number)
[Galaxy S 4 Q&A, Help & Troubleshooting] atir usman butt:
Kernel prb next sofware update will fixed all that .........
[Galaxy S 4 Q&A, Help & Troubleshooting] ikocijan0:
Yes, I have the same problem :/ HW Rev number: MP 0.900 :D
[Galaxy S 4 Q&A, Help & Troubleshooting] btemtd:
what happen bro? still no one has said that your kernel fixed the purple smear.... If it does fix it i can tell u that it would have gotten more attention than this,
[Galaxy S 4 Q&A, Help & Troubleshooting] Bosstazem:
I'm getting used to this prbs now lol. I've tried almost every present kernels and none of them solve these issues. Still waiting for some major update from samsung. It isnt a big deal when the screen set to high brightness. But a bit annoying at night.
[Galaxy S 4 Q&A, Help & Troubleshooting] atir usman butt:
I dont no bro why people not trying

---------- Post added at 02:21 AM ---------- Previous post was at 02:20 AM ----------

I try bro diffrent kernel no more smearing

---------- Post added at 02:23 AM ---------- Previous post was at 02:21 AM ----------

First flash adam kernel root ur phone then other stock kernel that will unroot auyomatically.i do like this
[Galaxy S 4 Q&A, Help & Troubleshooting] basem_antonios:
For me after long testing and comparing between S2, S3 and S4 I start to believe my s4 display is just fine. The S4 screen as most of us knows its turns off the pixels in black color and this doesn't Happen in s2 and s3 and there is some issues because that doesn't happen the right way so there is some delay between turning on and off the pixels and simply you can see that while scrolling in setting menu. Also the red color icons like flipboard app while swiping the app drawer and wired black colors while watch videos in low brightness. I checked a lot of devices and they are the same. I hope its not hardware rev. issue, I hope I see software update soon. May be I go back to s3 ? Lol Idk.
[Galaxy S 4 Q&A, Help & Troubleshooting] voodoochild2008:
Well back off hols and....still no fix, not a word from samsung to even put mind at ease, its a sad day that they have become so big now that we fall in the "we will tell you when we are good and ready"

Sorry to say I think next year I am heading to HTC, not to say they dont have issues but they are after Samsung, wanting a bigger bit of action and doing more with their phones to win us over.....really is a case of S4 been Apples 4s.
[Galaxy S 4 Q&A, Help & Troubleshooting] Bosstazem:
Every phone have it own issues. I think none of them is perfect. Im going to say every phone have troubleshoot forums. Lol I'm sure they will fix this for S4
[Galaxy S 4 Q&A, Help & Troubleshooting] ziphnor:
Hard to do if its a hardware issue...
[Galaxy S 4 Q&A, Help & Troubleshooting] Bosstazem:
Pretty sure it's software. You can try screen adjuster app. Adjust RGB to 5 or set contrast to 10 and the smearing is gone. For sure
[Galaxy S 4 Q&A, Help & Troubleshooting] eyecon82:
If you actually read this thread, you would have known that it is indeed, a software issue that CAN be fixed
[Galaxy S 4 Q&A, Help & Troubleshooting] ziphnor:
No reason to act like that, I actually did read this thread. I might have misunderstood something of course, but i have not seen any clear indication that it is just software. Just because software can work around it by changing what is displayed on screen does not mean it is a software issue.

But doesn't that just stop pure black from being displayed (at least the RGB 5 setting)? I thought the problem was the latency in turning on pixels from an off state. On the other hand, it is weird that the problem is almost gone at max brightness because even there it at least appears that the blacks are still pure.

Don't get me wrong, i really hope its a software issue :)
[Galaxy S 4 Q&A, Help & Troubleshooting] Bosstazem:
You're right. So all we can do now is wait for further update. Chill out bro we all want the same thing here :)
[Galaxy S 4 Q&A, Help & Troubleshooting] F4bioo:
http://www.youtube.com/watch?v=N6oDSi26Hf4

AP: I9505XXUAME2

CP: I9505XXUAME2

CSC: I9505OXXAMDB

RF call: 2013.04.23

HW REV. MP 0.900

Here shows smudges, it can be more visible with the minimum brightness and if you want to further increase this visibility try going to a dark environment.

Settings / "MORE" / About device.

:(
[Galaxy S 4 Q&A, Help & Troubleshooting] joshmasters:
You're right

Hey, you're absolutely right! It's a very expensive phone. Now think here in Brazil the 4G-contract-free models cost R$ 2,500.00 (which is about $ 1,250.00). Let's wait and see if there's a solution.
[Galaxy S 4 Q&A, Help & Troubleshooting] AnonymeLex:
Well anyway, I saw it does the same thing in 3D games. The screen fails to be quick in switching back on the pixels on. If it is a software problem, it's in the kernel, but I doubt. You can easily do the experiment in the demo of Quadrant.
[Galaxy S 4 Q&A, Help & Troubleshooting] codochi:
Me too :(
[Galaxy S 4 Q&A, Help & Troubleshooting] codochi:
My s4 has 2 horizontal 1 vertical and purple 1/2 side below when it's displayed light gray
[Galaxy S 4 Q&A, Help & Troubleshooting] kpgym:
Samsung Galaxy S4 Purple/Pink Screen Smearing. Please help

So i purchased my Samsung galaxy S4 GT-i9500 today and i am already noticing screen smearing problem especially when i got into the settings menu and its very annoying. I do not know if its the software issue and if the Samsung is going to release the software update to fix this but atm i am confused if i should go return the device because that device could also have the same problem :confused: I know there is an app called screen adjuster which helps make it better but why do we have to do this i mean its a brand new phone. Can anyone confirm if its the software issue and will be fixed ?

Thanks.
[Galaxy S 4 Q&A, Help & Troubleshooting] alexd83:
All the S4 I played with at shops (+- 5 ), they all had that smearing issue...

I forgot the idea to change mine because it will have the same...
[Galaxy S 4 Q&A, Help & Troubleshooting] Obagleyfreer:
Samsung have already acknowledged this problem. They said they will fix it in a future software update, probably by not shutting down pixels for black.
[Galaxy S 4 Q&A, Help & Troubleshooting] kpgym:
yea true so i guess there is no point going back and get a new replacement for the phone if all the S4 have got the problem.

---------- Post added at 12:00 PM ---------- Previous post was at 11:56 AM ----------

I hope they have because this issue is annoying sometimes. But how can you confirm if they have acknowledged this problem and said they will fix it in future software update?
[Galaxy S 4 Q&A, Help & Troubleshooting] pedrohz:
I have the exact same issue, in fact, my prior S4 (which I exchanged because of this) had this issue too. Unfortunately I don't think it's software related though, as my brother also got one the same day I got mine (same build) and its screen is absolutely perfect.
[Galaxy S 4 Q&A, Help & Troubleshooting] DanteSSS333:
Does your brother´s S4 have a completely black screen when displaying a black picture or does it glow a bit? If so, his S4 is the same as yours, but the screen calibration is different on his one. Read the other posts in this thread for more info on this issue ;)
[Galaxy S 4 Q&A, Help & Troubleshooting] Mittaa:
And if his brother have a complete black screen and no smear ... Samsung have to swap 10 million devices due to hardware fault (defective screen) LOL
[Galaxy S 4 Q&A, Help & Troubleshooting] Obagleyfreer:
Here is the conformation:

Just had a phone call from Samsung NZ and they told me that Samsung HQ have confirmed this issue and are working on a fix for the next firmware maintenance release.

See below email from Samsung NZ

Hi Owen,

As discussed, Samsung HQ have responded to say that the purple bleeding on the screen when scrolling should be resolved with the next maintenance release.

If you have any further issues please call our contact center on 0800 726 786

Regards,

Sean M*****

Customer Care Representative

HHP Support

Samsung Customer Care Ltd

T: 0800 726 786

Web: www.samsung.co.nz <http://www.samsung.co.nz/>

Email: *****@partner.samsung.com
[Galaxy S 4 Q&A, Help & Troubleshooting] Shocker580:
My S4 suffer the same issue. Happy to listen this :)

Thanks for the email sharing.
[Galaxy S 4 Q&A, Help & Troubleshooting] btemtd:
Wow thats interesting, so your the only one on the planet earth that was able to fix the smear issue by installing that kernel.. If I had the I9500 I will try but I have I9505 so I cant... all I can see is no one saying that it was fixed but only you... anywaysss..
[Galaxy S 4 Q&A, Help & Troubleshooting] codochi:
About my galaxy s4:

- Having many lines when displayed in white color and grey ( many lines: horizontal and 2 lines:vertical), purple in below 1/2 side .

- When camera is opened at night
[Galaxy S 4 Q&A, Help & Troubleshooting] Ironjer:
can you upload some pics with grey and white colors?
[Galaxy S 4 Q&A, Help & Troubleshooting] pokosik:
I have same issue with purple tint and ghosting
[Galaxy S 4 Q&A, Help & Troubleshooting] hoezay:
i had some weird stuff happen to me. hold something black and let the camera focus on it , then replace it with something white and the camera goes nuts ...like low power or something ...anyone else getting this ?
[Galaxy S 4 Q&A, Help & Troubleshooting] DireStraits87:
I've a problem with my i9500 screen ... when i scroll in settings or contacts or anywhere with black background, the fonts become blur n the grey-blue bars which seperate different groups for example the a b c d ... bars in contacts, when scrolling up n down these bars become dark blue not the whole bar but the up or down of them depending on scrolling Up(1) or Down(2) ... is this common i mean do you have this problem too n is it hardware or software ? tnx sorry for my poor english ...
[Galaxy S 4 Q&A, Help & Troubleshooting] Obagleyfreer:
Are you serious? Have you even read this thread or the OP dude?
[Galaxy S 4 Q&A, Help & Troubleshooting] leeoleelo:
looks like we're all having the same problem here..
[Galaxy S 4 Q&A, Help & Troubleshooting] dgenx210:
Having the same issue on HW Rev: MP 0.900. Hope they release that FW update soon! :(
[Galaxy S 4 Q&A, Help & Troubleshooting] Red89:
I noticed some times with low gsm signal(only gsm no 3g) on white screen the screen light flicker, this flicker appears only with low gsm signal, sometimes is very notable and sometimes no, is normal?

in practice the gsm ago interference with screen.
[Galaxy S 4 Q&A, Help & Troubleshooting] DireStraits87:
is this normal or i must take it to guarantee ?
[Galaxy S 4 Q&A, Help & Troubleshooting] Mittaa:
It is "normal" an would hopefully be corrected in a future firmware update. :fingers-crossed:
[Galaxy S 4 Q&A, Help & Troubleshooting] ShiftyTys:
ugh same

Hey guys, Long time listener first time caller.

Got delivery of my shiny new i9500 in Australia on friday, and felt kinda special as you all know the i9500 isn't in Australia (only the i9505 through carriers)

I noticed the purple smudging immediately and it was quite terrible. I googled "Purple screen smudge XDA" knowing id get some info here, ha.

BOOM GIANT 65 PAGE THREAD. Good work guys as usual.

I checking every s4 in every telco in my area last weekend (and finding they ALL do it).

The reason for my post is that I've come into work this morning and looked at my colleges S4 (i9505). And it DOESN'T NOT DO IT!!!

Let me clarify. it does it to such a tiny degree, I mean I see slight blurring on the edges of the grey bar but no purple. I'm very picky and i would accept this if my phone did it. also no heating issues. mine would heat over web browsing, i game on his and get less heat.

His details are as follows.

Mode:

i9505

Baseband:

I9505DVUAMD8

Kernel:

3.4.0-431985

se.infra@SEP-106 #1

Fri Apr 12 17:00:35 KST 2013

Build Number:

JDQ39.I9505XXUAMDE

Just an FYI to you all.

I would consider the issue almost non existent on this handset - and I am VERY VERY picky. VERY.
[Galaxy S 4 Q&A, Help & Troubleshooting] DanteSSS333:
If you had read the entire thread you would know that every S4 has one of the two issues (they exclude each other): purple smear or no true blacks. Your colleagues one has the other issue, his screen is equal to your one, only the software calibration is different. Hope I could clear this up for you.
[Galaxy S 4 Q&A, Help & Troubleshooting] ShiftyTys:
Admitedly I didnt read every page. But i did read ALOT of them. Can you please refer me to a page on how to replicate the blue track issue?

Sorry for wasting peoples time :)
[Galaxy S 4 Q&A, Help & Troubleshooting] DanteSSS333:
Testing for no true blacks is easy, just go into a completely dark room and look at a completely dark picture on the S4, it will glow slightly, since the pixels are not completely turned off. Though I wonder if your colleague will let you do that test xD.
[Galaxy S 4 Q&A, Help & Troubleshooting] ShiftyTys:
HHAHA, he will. the s3 goes VERY black, not not true black, I can still see faint glow. On my s4 unit with the blur issue i had pitch black room and couldnt see the screen even after my eyes adjusted. much blacker than my S3. i will check his screen.....

ok. the black screen does not turn pixels off completely. but it still is just as dark if not darker than my s3. But not as dark as my s4 with the issue.

I would much rather the "pixels stay on black issue" (and still have KILLER the blacks compared to a pure lcd screen (HTC IPhone etc)) than the "Smear purple but pixels turn off issue". Personally.

Unles there is more to the "Pixels dont turn off" issue that im not aware of.

Cheers

EDIT: AHHHAHAHAH, i thought you wrote "blue track" earlier. Which to me sounded like some abstract issue. of course i know how to check for true blacks, rofl.

also there is no red glow or anything. just slightly higher contrast. a little "less black"
[Galaxy S 4 Q&A, Help & Troubleshooting] DanteSSS333:
I also prefer a slight glow over the smearing, thats why you can use an app like screen audjuster to tune the contrast down a bit. It has exactly the same effect. Hope Samsung implements this in the next OTA.

PS: The misreading made me laugh too xD
[Galaxy S 4 Q&A, Help & Troubleshooting] gharb0129:
I think it's a software issue.

I have the sprint model and today updated from MDC to MDL. (It was the update sprint put out like a month ago).

I held off on updating because all of the ROMs I used were MDC based. Now that developers are using MDL I decided to update. Before I updated I did not have this purple smear and now I do lol.

Hopefully our providers will send out an update to fix this issue.
[Galaxy S 4 Q&A, Help & Troubleshooting] samven582:
Does anybody have a purple tint on top of the screen when the brightness is lowered?
[Galaxy S 4 Q&A, Help & Troubleshooting] Markz88:
Directly from Samsung :) look at here:
[Galaxy S 4 Q&A, Help & Troubleshooting] Beefheart:
As soon as it became evident a few RGB adjustments could rectify the issue, it was obviously software. Or, to put it more accurately, a software solution would become available which would overcome a hardware limitation, that being the slow speed the deactivated OLED pixels take to turn on and become visible at the colour and luminosity required. So Samsung have merely confirmed what we already knew.
[Galaxy S 4 Q&A, Help & Troubleshooting] haloimplant:
I have this but it's really faint I'm wondering if a person at the store would even be able to see it. Currently I'm alternating between deciding that it's not so bad or that it's going to drive me crazy for the next 2-3 years.

As far as the smearing, it's astounding to me that this phone could make it to release without anybody at Samsung noticing this. I mean as soon as I got home, went to the settings menu and scrolled it was obviously screwed up. There must be hundreds of people who used and tested the phone before release, are they all blind?
[Galaxy S 4 Q&A, Help & Troubleshooting] :
I have this at the bottom. Turning of auto screen tint in display options seems to help a little bit. When I first had the phone I saw the 'tint' much more than after a week and now I have to really look to see it, so. I'd give it some time. Furthermore, when you go to the store to try to get a replacement, you could end up with a phone with worse issues...
[Galaxy S 4 Q&A, Help & Troubleshooting] F4bioo:
I found a way to solve.

Just decompile the framework-re.apk

and remove the line in framework-res.apk\res\values\styles.xml

<item name="windowBackground">@drawable/tw_background_holo_dark</item>

recompile =D
[Galaxy S 4 Q&A, Help & Troubleshooting] haloimplant:
Are there other common issues? Everything else with this phone is perfect right now.

My service provider has 30-day swap policy and I've got another couple of weeks left. First they have to be able to see the problem, and I don't think I'd want to leave it until the last minute in case I do get another defect that isn't visible in the store (I doubt the 30 days resets).

I probably will notice it less over time as I forget about it. My laptop had a screen replacement and for a while it was bugging me that it is slightly dimmer in the lower left corner but I don't notice it anymore.
[Galaxy S 4 Q&A, Help & Troubleshooting] MajorAly:
My S4 is 3 days old. It's an international GT-I9500 version. Got it from/in Jeddah, Saudi Arabia.

This was the first thing I noticed when the first time I went into settings lol.

So yeah I can confirm that this is also happening to International S4s.

If it IS indeed refresh rate issue of the touchwiz, then a firmware update can fix it easily, else I can just laugh. It bothers me but I'll learn to live with it.

---------- Post added at 01:09 PM ---------- Previous post was at 12:22 PM ----------

Screenshot/Video for confirmation?
[Galaxy S 4 Q&A, Help & Troubleshooting] :
In Holland we have a legal warranty period for consumers that resets when you exchange a product.
[Galaxy S 4 Q&A, Help & Troubleshooting] LiquidBee:
I didnt have that purple smearing while i was on XXUAMDC firmware, but today I have updated my 9505 to XXUAME2, and now my phone has this "problem" :(
[Galaxy S 4 Q&A, Help & Troubleshooting] vortronn:
Most noticeable on Instagram - fluorescent colors

My new Samsung S4 has similar issues. I noticed it when choosing filters on Instagram - the brightness option at the top (shown as a sunburst with black and white half circles inside) causes all photos to become fluorescent yellow, green and pink.

Anyone else encounter this and is there a fix?
[Galaxy S 4 Q&A, Help & Troubleshooting] Brownie2k:
I'm running the latest AME3 firmware, and I've not got the problem. Phone came with AMDC firmware and i'm pretty sure I didn't have the problem on that either.
[Galaxy S 4 Q&A, Help & Troubleshooting] LiquidBee:
BMEA is the latest at the moment :) Didnt try it yet, but i will :)
[Galaxy S 4 Q&A, Help & Troubleshooting] Louer Adun:
Can you please clarify what this solved?

Anwyas, I bought my S4 today and have been loving it... Then night came and the bugs came out to play. I have been up most of the night reading over this thread trying to figure out if I should return my S4 tomorrow.

I have pretty much came to the conclusion that the problem with the purple smearing can be corrected in software, while maintaining the proper true blacks.

Logic tells us that all pixels are not created equal and some are suffering from a delay in turning on. My initial thought was that this would be a significant hardware problem and not something that can be fixed. But another factor was the brightness. Increase the brightness and you can (almost) completely eliminate the smearing effect. When you take the sum of both of those facts, the solution becomes quite obvious:

When the pixels turn on, take the pixel color that is lagging and ramp up the intensity (voltage) much higher than the other colored pixels (similar to how it would act in full brightness), then reduce the intensity as the pixel turns on so that it matches its proper levels. I would hope that such a scheme can be accomplished using software alone. Can any devs speak as to if this might be possible?

p.s. F4bioo, I'm still interested in your fix. what exactly does it fix as numerous different bugs are discussed in this topic. (For those interested I'm suffering from the purple smearing and keyboard flicker bugs).
[Galaxy S 4 Q&A, Help & Troubleshooting] Brownie2k:
I'm just waiting for my phone to charge, then installing it.

Sounds like a pretty good firmware.