Grainy screen - Galaxy S 4 Q&A, Help & Troubleshooting

Hi there...I had a galaxy nexus A while back and it suffered from a realy bad grainybscreen and that had a amoled screen also and im noticing it on my s4 now..
Anyone else?
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Yep dont know if its wat you mean al but to me I notice it on homescreen only try to take screenshot of you homrscreen and look at it in the galery gone look sharper and beter .. anyways went to many shops to see and they all the same so I guess its normal

Its the screen so it wont show up on the screenshot
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Ok to me my homescreen looks less sharper then if take screenshot of my homescreen look at it in the galery looks more crisp but I guess you got difrend issue

gavin-phelan said:
Hi there...I had a galaxy nexus A while back and it suffered from a realy bad grainybscreen and that had a amoled screen also and im noticing it on my s4 now..
Anyone else?
Sent from my GT-I9505 using Tapatalk 2
Click to expand...
Click to collapse
Yes, I'm suffering from this very aggravating problem with my S4's screen.. I did use the galaxy nexus and had this problem too.. but it seems to be less visible than the Galaxy Nexus.. The Galaxy S 3 doesn't have it, or at least I haven't seen any GS3 with this problem. Anyway, I don't think there is anyway to fix this but you can try sending it back to samsung.. see if they can help. :crying:

Related

S4 amoled screen also mura effect?

My phone is 1 month old..
And now I m noticing that there is blue shade on 3-4% part of the screen at bottom in 3-5% opacity...only in 0% brightness.. it wont shows in more than 20% brightness-100...
Its very slightly difference..
I shown my device to my near service centre.. they said there is nothing and its normal..
Screen not looks like that its defected piece.. bcuz its not high opacity shade..
Its hardly feels that its 3-4% opacity or(96% transparent..)
Its not much noticable. If we look closer then still not much noticable.. its very very slightly tint..
I was happy with s4 but now I m worried because I spend hard earned cash 40k on my device.. and I dont want hear that my device is faulty.. :'(
I used s3 and note 2.. and s4 has this too.. not much improvement from s3 and s4 displays..
so, is that normal??
:'(
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Mandeep148 said:
My phone is 1 month old..
And now I m noticing that there is blue shade on 3-4% part of the screen at bottom in 3-5% opacity...only in 0% brightness.. it wont shows in more than 20% brightness-100...
Its very slightly difference..
I shown my device to my near service centre.. they said there is nothing and its normal..
Screen not looks like that its defected piece.. bcuz its not high opacity shade..
Its hardly feels that its 3-4% opacity or(96% transparent..)
Its not much noticable. If we look closer then still not much noticable.. its very very slightly tint..
I was happy with s4 but now I m worried because I spend hard earned cash 40k on my device.. and I dont want hear that my device is faulty.. :'(
I used s3 and note 2.. and s4 has this too.. not much improvement from s3 and s4 displays..
so, is that normal??
:'(
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Click to collapse
Not happening to my phone
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Mandeep148 said:
My phone is 1 month old..
And now I m noticing that there is blue shade on 3-4% part of the screen at bottom in 3-5% opacity...only in 0% brightness.. it wont shows in more than 20% brightness-100...
Its very slightly difference..
I shown my device to my near service centre.. they said there is nothing and its normal..
Screen not looks like that its defected piece.. bcuz its not high opacity shade..
Its hardly feels that its 3-4% opacity or(96% transparent..)
Its not much noticable. If we look closer then still not much noticable.. its very very slightly tint..
I was happy with s4 but now I m worried because I spend hard earned cash 40k on my device.. and I dont want hear that my device is faulty.. :'(
I used s3 and note 2.. and s4 has this too.. not much improvement from s3 and s4 displays..
so, is that normal??
:'(
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Click to collapse
It's a known issue on amoled displays, especially on greys. Search for miura on Google for more info
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pardoned said:
It's a known issue on amoled displays, especially on greys. Search for miura on Google for more info
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Click to collapse
u mean faulty?
Us that is colour burnin?
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My s4 has the same issue. A pink tint on the botton. This is my 4° device and no one had a perfect screen. Samsung quality control really is a crap.
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saype said:
My s4 has the same issue. A pink tint on the botton. This is my 4° device and no one had a perfect screen. Samsung quality control really is a crap.
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Click to collapse
So.. its normal?
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yes its normal to happen in amoleds. I have 2 devices with this same tint issue. Just ignore it and enjoy your device unless its really visible in daily usage.
send it back for repairs or replacement?
CP-93 said:
send it back for repairs or replacement?
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Click to collapse
I dont know.. if its normal then I think why need to give for repair...
Its not annoy me.. its very very less tint.. I think it wont noticed much after changing viewing angle. .. I was just worried about that's why was questioning that its normal?
Waiting for more replies keeps that it's normal. It will make happy..
Seems like silly right?
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The issue that your device have appear very discret. I got a unit that the screen was terrible. Whites was yellowish and when the device was inclined a very visible green tint appears on whites. The problem is you replace your s4 and to get a baddest. Sorry my bad English.
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saype said:
The issue that your device have appear very discret. I got a unit that the screen was terrible. Whites was yellowish and when the device was inclined a very visible green tint appears on whites. The problem is you replace your s4 and to get a baddest. Sorry my bad English.
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Click to collapse
Yes.. thats why I worried..
Btw I shown my device to service guys they said its normal.. they said "where is tint" I think they dont want to notice..
But as I said.. its not noticable.. I have tint at bottom 3% part of screen which is very less.. new person after holding my device, he cant detect that tint..
I have not tint in all screen like u said yellow or bluish on side..
Mine is not noticable but it has tint below which pretty much less opacity for eg. 2-3% out of 100..
Just wana know ia it normal..? Is it in all amoled screens? Is that tint, we should count it as defect?
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I think is normal. My current device have a pink tint on the botton. To be thinking or searching to see this issues is not good for us. We need to forget it and enjoy our devices! Best Regards!
And sorry my bad English again.
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saype said:
I think is normal. My current device have a pink tint on the botton. To be thinking or searching to see this issues is not good for us. We need to forget it and enjoy our devices! Best Regards!
And sorry my bad English again.
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Click to collapse
Seconded.
If it doesn't hinder your usage of your phone, then just enjoy the screen for the excellent colours etcetera. I'd say a lot of these phones will have a similar issue (or non issue depending on what way you look at it.)
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pardoned said:
Seconded.
If it doesn't hinder your usage of your phone, then just enjoy the screen for the excellent colours etcetera. I'd say a lot of these phones will have a similar issue (or non issue depending on what way you look at it.)
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Click to collapse
:thumbup: :thumbup: :thumbup:
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Could someone with a Note 3 check this

Thinking of buying the Note 3 but really wanna know how bad the smearing issue is cause i bought the Galaxy s4 on launch day and couldn't live with the smearing issue ( my girlfriend also bought a Galaxy s4 on launch day and still has it..she didn't think the smearing was annoying..i hated it )
Could someone with a Note 3 try both things explained below on low brightness
1. Download zedge and search for black wallpapers..then while scrolling thru the wallpapers..do you so smearing..purple glow on the grey background in zedge between the wallpapers?
2. Choose a black wallpaper as background and install nova launcher...then on the homescreen set a widget with some grey in it like the stock music player widget and scroll between the homescreens...and also with some icons on the homescreens?
On the Galaxy s4 doing the above there was a lot of smearing..purple glow visible even after the fix from samsung cause they only fixt it in the samsung framework
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I tested Zedge.. Yes there is smearing.
But when you uncheck Auto Brightness Smearing is much much better.
Auto Mode is very dark. In a dark room it gets darker again..I recommend manual Brightness 30 - 50%. Then its really fine.
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The purple smearing effect is probably just because the greys blur when moving and they appear purple. Entirely normal and probably same on all phones.
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Jep. Black = Pixels are off
When you Scroll the Pixels need Time to activate. Thats the Price for real Black
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danieljamie said:
The purple smearing effect is probably just because the greys blur when moving and they appear purple. Entirely normal and probably same on all phones.
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^^ Ditto, I don't find it annoying, I didn't even know about it until the OP mentioned it.
Ive seen it in Tapatalk 2 with blue dark theme..
Black background and gray Text..The complete Text smeared..
Now i use the classic dark theme (dark grey background) and all is fine
Dont think about Smearing.. i think you will just see it in darker rooms.
Thanks a lot guys...you saved me 750 bucks, some people don't find it that big of a issue like my girlfriend who still has the Galaxy s4...for me it is an issue cause i like to have a black background and while using a black background with nova launcher..on my Galaxy s4 the smearing issue was visible on the icons switching thru the homescreens..don't want that on my next phone
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danieljamie said:
The purple smearing effect is probably just because the greys blur when moving and they appear purple. Entirely normal and probably same on all phones.
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Had the Note 2 and there the smearing was not present cause while displaying black the lights where still active. Bought the Galaxy s4 on launch day and that was the first time i had the smearing issue cause when displaying black the amoled screen is really off so when switching to another color like grey the lights need to become active witch creates the smearing. Sold the Galaxy s4 and bought the htc One that has no smearing but wanted a larger screen so bought a Note 2 again witch has no smearing issues cause the screen doesn't turn of like the Galaxy s4 when displaying black and hoped the Note 3 wouldn't have it but seems it does unfortunatly
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D_Magic said:
Had the Note 2 and there the smearing was not present cause while displaying black the lights where still active. Bought the Galaxy s4 on launch day and that was the first time i had the smearing issue cause when displaying black the amoled screen is really off so when switching to another color like grey the lights need to become active witch creates the smearing. Sold the Galaxy s4 and bought the htc One that has no smearing but wanted a larger screen so bought a Note 2 again witch has no smearing issues cause the screen doesn't turn of like the Galaxy s4 when displaying black and hoped the Note 3 wouldn't have it but seems it does unfortunatly
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OR you could've installed one simple app that would've fixed your smearing issue on your S4. Your blacks will not turn off completely and will remove smearing 100%.
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plasmastate said:
OR you could've installed one simple app that would've fixed your smearing issue on your S4. Your blacks will not turn off completely and will remove smearing 100%.
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Click to collapse
Tried all the apps and settings and didn't work
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D_Magic said:
Tried all the apps and settings and didn't work
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Click to collapse
install Screen Adjuster from Play Store..
Set Contrast to -10 or -15. Activate.
No more Smearing
XtremeAt said:
install Screen Adjuster from Play Store..
Set Contrast to -10 or -15. Activate.
No more Smearing
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Click to collapse
Tried it 2 minutes ago on my girlfriends Galaxy s4 and it does reduce it for the most part but at a very low brightness there is still smearing unfortunatly
No problem though cause after the galaxy s1..s2..s3..s4 and note 1 and 2 it's time to give someone else a try
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Random dialling or screen captures

I've had some strange issues with my note 3 and wonder if anyone else has similar
My note 3 takes random screen captures or will dial one of my contacts without notice
I have a pattern lock screen so I know my phone isn't unlocking
Anyone else having similar ?
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mancuk29 said:
I've had some strange issues with my note 3 and wonder if anyone else has similar
My note 3 takes random screen captures or will dial one of my contacts without notice
I have a pattern lock screen so I know my phone isn't unlocking
Anyone else having similar ?
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Click to collapse
Had some issues with mine today,I did Restore to Default and things are working fine,just try though and you could be lucky or else wait for the OTA update to fix the issue!
So glad it's not just me .. Did you reset your whole phone to default ie factory reset or just the phone settings and if the phone how did you do it ?
I've added an app called call confirm to ensure I don't accidently dial
What a weird issue ?
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mancuk29 said:
So glad it's not just me .. Did you reset your whole phone to default ie factory reset or just the phone settings and if the phone how did you do it ?
I've added an app called call confirm to ensure I don't accidently dial
What a weird issue ?
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Click to collapse
Thanks for letting me know about that app and I did factory reset,I use my iphone a lot so used the term Restore to Default.The thing is you have to delete everything off your phone if u got it and u should be ok I believe!
When the original Galaxy Note arrived,there was a problem called Ghost touch,which operated screen touch on its own and it affected only 1/3rd of owners so Note series is prone to such issues,dont worry!
Your welcome will we have had our fair share of issues reboot and ghost dialing .. Not good for a flagship handset but im sure Sammy will sort it ..... Glad it's bit a fault but probably a software issue which will be fixed in time to done
Love the note 3 had one and two and so far bar a few gremlins this is the best handset so far
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mancuk29 said:
Your welcome will we have had our fair share of issues reboot and ghost dialing .. Not good for a flagship handset but im sure Sammy will sort it ..... Glad it's bit a fault but probably a software issue which will be fixed in time to done
Love the note 3 had one and two and so far bar a few gremlins this is the best handset so far
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Click to collapse
Hey,its alright buddy!Ahh,I have had some worst issues with my S4 and took many hours to sort it out despite being an E&C engineer so this is less than a problem for me.Basically yes,facing such issues on flagship handsets gives us the creep but we cant help.
Yes,its one of the best handsets,hopefully some rooting in the near future.
Best of luck!
nsnarayan10 said:
Hey,its alright buddy!Ahh,I have had some worst issues with my S4 and took many hours to sort it out despite being an E&C engineer so this is less than a problem for me.Basically yes,facing such issues on flagship handsets gives us the creep but we cant help.
Yes,its one of the best handsets,hopefully some rooting in the near future.
Best of luck!
Click to expand...
Click to collapse
That's Why I Got Rid Of My S4 Too Many bugs ... I Can Live with the few bugs we have as this phone rocks . I bought the iPhone 5S before my note 3 it lasted a whole 2 days before I returned it back to apple who looked at me like u was thick ... "you want to return the 5S" ... yes pls it's so small I can't stand it. .. "but u have a premium sought after device" my reply your point is ? make a bigger screen until them I'll stick with Samsung !
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mancuk29 said:
That's Why I Got Rid Of My S4 Too Many bugs ... I Can Live with the few bugs we have as this phone rocks . I bought the iPhone 5S before my note 3 it lasted a whole 2 days before I returned it back to apple who looked at me like u was thick ... "you want to return the 5S" ... yes pls it's so small I can't stand it. .. "but u have a premium sought after device" my reply your point is ? make a bigger screen until them I'll stick with Samsung !
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Click to collapse
I use an iphone 5 too and I agree that the screen is a bit small and thats one of the reasons why people are stuck with Android but its really cool and both have advantages over each other.
Anyway,where are you from,buddy?

Lines throughout the display

Hi all, as you can see in the photo my note 3 suffer from this strange lines especially noticeable on the grey and white colors. Can any anyone test his screen and tell if have this problem too? you can do it by downloading "Screen Test" app. Also i'd like to know if this is a software or hardware related problem.
a friend of mine have a similar problem! maybe is a difect of every phone... please test and let me know
Had this issue with 2 Galaxy S4 which I finally gave up on - they are defective. You can only see it in low light under grey background. Go back and throw the phone at them. Trouble is the technician will never see it in store under those lights.
No, but that app is so ridiculously low-res that I can see the individual pixels.
Do they also show up if you open up Sketchbook? (Gives you a white sheet.)
Yep, the infamous AMOLED verticle lines going down the screen. I am glad my note 3 doesnt have this, really irritated me on the S4.
I do have the pink hue..but no vertical line like that..
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So should I take the phone to service centre or not?
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naimmkassim said:
I do have the pink hue..but no vertical line like that..
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Click to collapse
If i were you..i would take it n check with others unit in the shop..just to confirm if the issue is same or not..in my case for pink hue..all others unit in my area or shop that i go were effected by it..so no meaning of change it..
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dnt wry ..its common..i check 9 phones all had same issue..but i have no issue in this phone ..u r lucky if u get 1 gud phone among ten
effry said:
Hi all, as you can see in the photo my note 3 suffer from this strange lines especially noticeable on the grey and white colors. Can any anyone test his screen and tell if have this problem too? you can do it by downloading "Screen Test" app. Also i'd like to know if this is a software or hardware related problem.
Click to expand...
Click to collapse
Read this , page 2 by TML1504 was a good description
http://forum.xda-developers.com/showthread.php?p=46698951
and
http://forum.xda-developers.com/showthread.php?t=2463786
Limeybastard said:
Read this , page 2 by TML1504 was a good description
http://forum.xda-developers.com/showthread.php?p=46698951
Click to expand...
Click to collapse
thx, i even posted a own thread about this, and did a lot of posts about it during the time i had
my recent devices...
see here for my thread:
http://forum.xda-developers.com/showthread.php?t=2463786
thanks you all i think that iìll try sending it in assistence center
there is any hope that it will be accepted with knox 0x1? i read that in europe it doesn't voidthe warranty ( i live in italy)

Horizontal lines on display

Hi bros, my phone is just 3 days old and it has a little problem in display.. if I set screen brightness lower and background image white or grey then there appears two horizontal straight lines in the display which used to get vanished on higher brightness.. so can you guys tell me if this is a really big issue or not because I have 30 days replacememt policy..
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If it bothers you, then you should get a replacement. I would get the replacement, could get worse with time
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You should definitely get it replaced.
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coolkoushik07 said:
Hi bros, my phone is just 3 days old and it has a little problem in display.. if I set screen brightness lower and background image white or grey then there appears two horizontal straight lines in the display which used to get vanished on higher brightness.. so can you guys tell me if this is a really big issue or not because I have 30 days replacememt policy..
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Click to collapse
I'd be straight on the phone to get the replacement it'll only get worse not recify itself
Well I am also thinking to get it replaced and while searching over net I just came to know that it is normal in amoled display and there is no guarantee if the next one wont be worse than this one.. also I saw flipkart review (I bought from there) some people complained that after replacement also they got same error.. so just wanna be confirmed..
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coolkoushik07 said:
Well I am also thinking to get it replaced and while searching over net I just came to know that it is normal in amoled display and there is no guarantee if the next one wont be worse than this one.. also I saw flipkart review (I bought from there) some people complained that after replacement also they got same error.. so just wanna be confirmed..
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Click to collapse
Get it replaced again and again till the problem is not solved.
My device has no such problem so it is not a problem that all devices have.
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coolkoushik07 said:
Well I am also thinking to get it replaced and while searching over net I just came to know that it is normal in amoled display and there is no guarantee if the next one wont be worse than this one.. also I saw flipkart review (I bought from there) some people complained that after replacement also they got same error.. so just wanna be confirmed..
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Click to collapse
It is a hardware problem about horizontal lines on display. I don't thing that will happen again as you get a new replacement.
LotoTutu said:
It is a hardware problem about horizontal lines on display. I don't thing that will happen again as you get a new replacement.
Click to expand...
Click to collapse
After getting it replaced now there are some vertical lines also as well as some horizontal lines.. so the previous one was better.. and after searching over net I found it as normal.. almost everyone has this in their device.. to get these lines visible u have to select a grey background and u have to check the display at dark room and with low brightness (25% or less).. I guess all have this issue more or less.. by the way I have asked for replacement once more.. lets see what I will get next.. but it is pretty sure that samsung should not invest on amoled technology if they cant produce error free display..
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coolkoushik07 said:
After getting it replaced now there are some vertical lines also as well as some horizontal lines.. so the previous one was better.. and after searching over net I found it as normal.. almost everyone has this in their device.. to get these lines visible u have to select a grey background and u have to check the display at dark room and with low brightness (25% or less).. I guess all have this issue more or less.. by the way I have asked for replacement once more.. lets see what I will get next.. but it is pretty sure that samsung should not invest on amoled technology if they cant produce error free display..
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Click to collapse
Can you please take a screenshot or picture of your problem?
I have two s4 and none of them has any such problem.
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maxsam4 said:
Can you please take a screenshot or picture of your problem?
I have two s4 and none of them has any such problem.
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Click to collapse
I got the same problem... in my case its almost not visible, but once you see it you keep seeing it... I've took multiple screenshots but its not on the screenshot...
Its like not all the pixels are getting darkernd...
sorry for the bad english.
maxsam4 said:
Can you please take a screenshot or picture of your problem?
I have two s4 and none of them has any such problem.
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Click to expand...
Click to collapse
In a dark rum open ur mobile.. set the brightness below 25% and make the background grey and look carefully if there is any lines or band.. many users are facing this problem in amoled displays.. and i dont understand why samsung focused on such an expensive display which has this type of draw backs..
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coolkoushik07 said:
In a dark rum open ur mobile.. set the brightness below 25% and make the background grey and look carefully if there is any lines or band.. many users are facing this problem in amoled displays.. and i dont understand why samsung focused on such an expensive display which has this type of draw backs..
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Click to collapse
just tried it at many different brightness levels and background colours but I can see no such lines.
Remember such bands can be caused by scratch guards of poor quality.
maxsam4 said:
just tried it at many different brightness levels and background colours but I can see no such lines.
Remember such bands can be caused by scratch guards of poor quality.
Click to expand...
Click to collapse
There are no scratch guard on the display.. I dont use any cover or screen protector in my phone... and if u cant see any such lines then u r lucky.. I am waiting for my 3rd replacement.. next time I will ask for refund if I see more lines on display..
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I got again same issues on my new replaced phone.. I m gonna use it for now and if it really makes any problem I will go to service centre as I got 1 year warranty too. What do u guys say? The seller is also ready to give me full refund but there is no guarantee if I wont get defective phn next time.. so for now I want to keep it with me.. what do u guys say??
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Dude it's totally normal and unfortunately something you have to live with. You will NOT find an S4 with a perfect display.
I went through 7 of them, and every single one had horizontal banding in the grey, some had that and green or pink tints as well.
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Obagleyfreer said:
Dude it's totally normal and unfortunately something you have to live with. You will NOT find an S4 with a perfect display.
I went through 7 of them, and every single one had horizontal banding in the grey, some had that and green or pink tints as well.
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Thanks for ur answer.. I was fool to ask them replacement.. the 1st phone was much better and now I regret for what I have done.. by the way I have 1 year warranty and I have rooted my phone using saferoot so I can play with my s4 with peace.. if the condition turns bad I have always an another option to go to svc cntr...
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If it bothers u alot, get a refund.
I don't think u can get a s4 with a perfect screen, I have seen numerous S4s all of them suffer from this.
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noufel said:
If it bothers u alot, get a refund.
I don't think u can get a s4 with a perfect screen, I have seen numerous S4s all of them suffer from this.
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Well but will this issue make any problem in future? I am not worried about this issue for now but I am worried if in future it creates any problem.. I have prepared to trip the knox counter within next 2 or 3 months so I will lose warranty.. thats the reason why m I worried..
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coolkoushik07 said:
In a dark rum open ur mobile.. set the brightness below 25% and make the background grey and look carefully if there is any lines or band..
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Done. Nothing like that observed on I9505 and on remaining I9300 (2x)

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