screen yellow tint on left side and blue shadow following scroll - Samsung Galaxy A71 Guides, News, & Discussion

At low brightness states between 5% and 15% , I notice
a yellow tint on the lift side of the phone, especially on grey background, but It's better seen in a dark room, like when I'm scrolling at night.
can you guys tell if it's a software or hardware problem.
I can't ignore that odd uniformity in colours.
There is also a blue shadow following my scroll down in the same conditions of lightinig and brightness.
Here's a link showing the problem

Here are some pics, I wish they are clear enough

that's called smear. it happens on all good amoled screen. it's even exist on 90Hz display ex: op7t. but it hard to notice it because of 90Hz refresh rate.

faizauthar12 said:
that's called smear. it happens on all good amoled screen.
Thanks for replaying?.
So I just should cope with it?
Not going to improve, right?
Click to expand...
Click to collapse

faizauthar12 said:
that's called smear. it happens on all good amoled screen.
Click to expand...
Click to collapse
It doesn't sound comforting when you say "good amoled screen" It means the technology is basically crap
Does it exist on Galaxy S20?

DonAndress said:
It doesn't sound comforting when you say "good amoled screen" It means the technology is basically crap
Does it exist on Galaxy S20?
Click to expand...
Click to collapse
i have j7 pro, a71 and op7t.
j7 pro has less contrast than a71 and op7t. and j7 pro doesn't have noticeable smear as a71 and op7t does.
this is a refference where i get those information https://amp.reddit.com/r/GalaxyS9/comments/9brauw/black_smear_test/
as stated in link above, every pixel in amoled is on and off. when you're using black theme and low brightness and trying to scroll.as fast as possible. the led at certain location need to be turn and off as soon as possible. it makes smear noticable.

Related

Ghosting problem?

I don't know if it's roms (I'm on OOS4.1.1)related but, is anyone experiancing ghosting problems with oneplus 3? Btw it only happens with black colors. They just blur when I scroll.
0xelectron said:
I don't know if it's roms (I'm on OOS4.1.1)related but, is anyone experiancing ghosting problems with oneplus 3? Btw it only happens with black colors. They just blur when I scroll.
Click to expand...
Click to collapse
This is normal for all amoled panels that exist, that ghosting happens when the pixels need to turn on after they were completely off (when the screen displays black). This tends to happen most at low brightness when a pixel is going from the off state to a dark color like grey or dark blue. Happens with my Galaxy S3, S4, S5, S6 and S7 and my OP3. Other phones with amoled panels do the exact same thing and OLED TVs do it too. It's perfectly normal
crzykiller said:
This is normal for all amoled panels that exist, that ghosting happens when the pixels need to turn on after they were completely off (when the screen displays black). This tends to happen most at low brightness when a pixel is going from the off state to a dark color like grey or dark blue. Happens with my Galaxy S3, S4, S5, S6 and S7 and my OP3. Other phones with amoled panels do the exact same thing and OLED TVs do it too. It's perfectly normal
Click to expand...
Click to collapse
Thanks for the information. Have we overcome this problem in s8. I mean after 5 generations of display panels, Samsung ought to have fixed it.
0xelectron said:
Thanks for the information. Have we overcome this problem in s8. I mean after 5 generations of display panels, Samsung ought to have fixed it.
Click to expand...
Click to collapse
probably not, and they wont anytime soon. its just a minor inconvenience
0xelectron said:
Thanks for the information. Have we overcome this problem in s8. I mean after 5 generations of display panels, Samsung ought to have fixed it.
Click to expand...
Click to collapse
Its just the way how amoled currently works. I would say don't look at it and enjoy your phone!
Puddi_Puddin said:
Its just the way how amoled currently works. I would say don't look at it and enjoy your phone!
Click to expand...
Click to collapse
Oh I'm enjoying it! Very much! Thanks!
timrock7 said:
probably not, and they wont anytime soon. its just a minor inconvenience
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Click to collapse
You're right.

Night Mode *not true amoled black*

I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
bobandar said:
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
Click to expand...
Click to collapse
yes, its the problem off one UI dark mode not A50 problems!
try good lock to make ur bar!
Mahdi2000 said:
yes, its the problem off one UI dark mode not A50 problems!
try good lock to make ur bar!
Click to expand...
Click to collapse
That can be but it is completely black amoled on my s9+. Maybe software update can fix it in the future. Not a major bug though, just wanted to know if the problem was common.
bobandar said:
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
Click to expand...
Click to collapse
Mine is just simply not true black, but I can only see it when I boost the brightness. But to be fair, samsung doesn't really promise a true AMOLED black as they say it's just so it's easier on the eye at night (dark/low light) ambient. But yeah, it'd be better to have a true AMOLED black in night mode.
amrazing33 said:
Mine is just simply not true black, but I can only see it when I boost the brightness. But to be fair, samsung doesn't really promise a true AMOLED black as they say it's just so it's easier on the eye at night (dark/low light) ambient. But yeah, it'd be better to have a true AMOLED black in night mode.
Click to expand...
Click to collapse
Mate, it is true amoled back on flagship devices after s8, i had a true amoled black on my s9+ no matter at what level my brightness was set.
bobandar said:
Mate, it is true amoled back on flagship devices after s8, i had a true amoled black on my s9+ no matter at what level my brightness was set.
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Click to collapse
Well then it sucks. What's the point of having an AMOLED display if the software won't let us have its advantages
amrazing33 said:
Well then it sucks. What's the point of having an AMOLED display if the software won't let us have its advantages
Click to expand...
Click to collapse
Yes , exactly my point
Its named night mode and not dark mode maybe its different
Yep, I agree, however I don't notice any difference depending upon brightness level.
bobandar said:
Mate, it is true amoled back on flagship devices after s8, i had a true amoled black on my s9+ no matter at what level my brightness was set.
Click to expand...
Click to collapse
Yeah its also amoled black on my a7 2018 and a50 except for the normally white parts in the ui but its okay like most of the ui is still pure black its not like the whole screen is grey
There is s little fix guys. See this video
https://youtu.be/Y398_v3DRkI
Theres no large difference in mah consumption between completely dark mode (pixels off) and dark theme.
To me it seems black parts are true black/turned off. On any level of brightness is the same.
No I think Samsung did it intentionally.. because true black is way more susceptible to burn in.. you can't have UI elements being turned off all the time that would result in very bad burn ins to text and Icones..
Still thay made it dark enough so you won't notice it
And another thing it's the opposite of what you said when the brightest is low it turns off and when it's high it becomes very dark gray technically black but not off.
Also you can't design a decent looking gui if all elements are pure black.
Guys try good lock app via which the notification panel can be adjusted to colors we want
baraa_a_awwad said:
No I think Samsung did it intentionally.. because true black is way more susceptible to burn in.. you can't have UI elements being turned off all the time that would result in very bad burn ins to text and Icones..
Still thay made it dark enough so you won't notice it
And another thing it's the opposite of what you said when the brightest is low it turns off and when it's high it becomes very dark gray technically black but not off.
Click to expand...
Click to collapse
That's not how burn in works. Burn in occurs at the pixel level. A pixel that's on all the time will burn at the regardless of the colors of the surrounding pixels (black, grey, or whatever)
felixdd said:
That's not how burn in works. Burn in occurs at the pixel level. A pixel that's on all the time will burn at the regardless of the colors of the surrounding pixels (black, grey, or whatever)
Click to expand...
Click to collapse
Every burn in is different from another.. basically the higher the contrast the worst the burn is
baraa_a_awwad said:
Every burn in is different from another.. basically the higher the contrast the worst the burn is
Click to expand...
Click to collapse
I think maybe you're confusing contrast with brightness? Again, burn-in occurs at the pixel level, when a pixel cannot return to its initial relaxed state, and is not dependent on whether the pixel beside it is on or off.
https://en.wikipedia.org/wiki/Screen_burn-in#Plasma,_LCD,_and_OLED_displays for a very brief primer
bobandar said:
I have noticed this issue since two firmware updates but i usually dont use night mode much that is why did not post anything regarding this.
When the nightmode is on and the brightness level is low lets say around 20% , the pixels are not really off when the bg is black (settings menu/qs). But when the brightness is increased above 40% the pixels go off and ive a true amoled bg.
Does anyone else have this issue?
Click to expand...
Click to collapse
Hello, on my galaxy a50, there is a similar effect, only at a brightness close to the minimum, a gray gradient appears, part of the screen becomes gray and part black. When you increase the brightness to about 40 percent, the color is aligned. At the same time, the black color remains black on the lock screen at any brightness.

Green tint on dark background low brightness

Man I hate OLED lottery.
Does anyone else have this issue? It's something similar to this:
https://forum.xda-developers.com/oneplus-7t/help/green-tint-issue-oneplus-7t-t3986231
I'm debating if I should exchange it or just keep it, it's only noticeable at low brightness
vwite said:
Man I hate OLED lottery.
Does anyone else have this issue? It's something similar to this:
https://forum.xda-developers.com/oneplus-7t/help/green-tint-issue-oneplus-7t-t3986231
I'm debating if I should exchange it or just keep it, it's only noticeable at leow brightness
Click to expand...
Click to collapse
I have the same effect in original Youtube app. It is just a bad background gradient in the application. Don´t blame the phone....
When I open Messenger with black background and grey status bar at the top of the app in the same brightness level, there is no greenish effect.
I am also having uniformity issues. Very noticeable, unfortunately. As there are no 512GB Ultras available anyway ATM, O will just have to live with it for the moment. Maybe I get used to it...
buddy66 said:
I have the same effect in original Youtube app. It is just a bad background gradient in the application. Don´t blame the phone....
When I open Messenger with black background and grey status bar at the top of the app in the same brightness level, there is no greenish effect.
Click to expand...
Click to collapse
mm weird, I see it in every single app with dark grey background, even in settings (w/Dark mode on), the bleeding is a lot bigger from the top right corner.
EDIT: Just checked the messenger app (FB messenger) and background is completely black so most pixels are off except for the letters and gray search bar but bleeding wouldn't be noticeable.
vwite said:
mm weird, I see it in every single app with dark grey background, even in settings (w/Dark mode on), the bleeding is a lot bigger from the top right corner.
EDIT: Just checked the messenger app (FB messenger) and background is completely black so most pixels are off except for the letters and gray search bar but bleeding wouldn't be noticeable.
Click to expand...
Click to collapse
I've just checked it with Gmail since it is also a Google application and you can notice the bleed when the lights in the room are turned on and I try to cover the top of the phone to see it. After turning the lights off, whole app is equally gray so in my opinion it is just an optical illusion. If I recall well the AMOLED displays use some kind of dimming (tinkering with the frequency) in order to reach a lower point of the brightness that is not noticeable for human eye. Probably this can be seen when covering a gray part of Google apps in a room that has another not so bright light source.
buddy66 said:
I've just checked it with Gmail since it is also a Google application and you can notice the bleed when the lights in the room are turned on and I try to cover the top of the phone to see it. After turning the lights off, whole app is equally gray so in my opinion it is just an optical illusion. If I recall well the AMOLED displays use some kind of dimming (tinkering with the frequency) in order to reach a lower point of the brightness that is not noticeable for human eye. Probably this can be seen when covering a gray part of Google apps in a room that has another not so bright light source.
Click to expand...
Click to collapse
I made a picture. It is showing a 5% gray test pic and supposed to be uniform. It is easy to see and I was kind of shocked when instantly noticing it the first time I was using it in the dark. Settings and many parts of the dark one UI are using grays in that range.
Anybody else? If it is rare, it will be worth pushing for an exchange.
corwin_amber said:
I made a picture. It is showing a 5% gray test pic and supposed to be uniform. It is easy to see and I was kind of shocked when instantly noticing it the first time I was using it in the dark. Settings and many parts of the dark one UI are using grays in that range.
Anybody else? If it is rare, it will be worth pushing for an exchange.
Click to expand...
Click to collapse
I did the same test, I'm attaching a picture of my Note 10+ and the S20 Ultra side by side. Uniformity seems a lot better on the note 10+, however on white background the Note 10+ turns more red when I slightly tilt it while the S20 Ultra seems to shift colors a lot less and still white overall.
Still not sure if it's worth the hassle to return.
Ok, the fact, that it looks very much like mine can be good and bad ?
Could you please check, if is different at 60Hz? For me, it is clearly different.
corwin_amber said:
Ok, the fact, that it looks very much like mine can be good and bad
Could you please check, if is different at 60Hz? For me, it is clearly different.
Click to expand...
Click to collapse
Oh wow, you're right! I set it to 60 hz and QHD+ and uniformity on the gray test got noticeable better, still some green on top right corner and around the punch hole but noticeable less. I love reaaally 120 hz during normal use though.
Thanks for confirming, same here. I wonder, if this is something, that can be fixed in software... And if the rumoured 'dynamic refresh raze' update might change things.
Could please note people check their Ultras displays?
Same here with my s20 more visible at 12hz refresh rate with dark theme
Damn it, ok, then I really hope that it is fixable... Weird.
I am using smiled displays since Symbian Nokias, never had one, where I noticed it so much.
I remember all the Mate 20 Pros with LG screen had this issue buy way worse in some cases
https://www.google.com/search?q=mat...JtXpfSDsL9sQXomrbgDQ&rlz=1C1CHBF_enUS731US731
In some cases they were normal during the first days but the problem evolved until the display was unsusable in low light conditions, hope the same won't happen to our phone during the next weeks.
yeah I don`t have this issue I did the screen test in Gmail and download the app that does all the different colors including gray, at the lowest brightness and at other levels of brightness at 120hz its all uniform.
2003vstrom said:
yeah I don`t have this issue I did the screen test in Gmail and download the app that does all the different colors including gray, at the lowest brightness and at other levels of brightness at 120hz its all uniform.
Click to expand...
Click to collapse
Mine is most noticeable at around 35-40% brightness and with 120 hz but still noticeable with 60 hz while on the note 10+ I can't see any green at all at any level of brightness. I think it's a quality issue and variation of OLED screens but not sure if it would count as "defective". Samsung doesn't do exchanges so it would be a pain to return everything and recorder without the promotions and reservation/pre-order credits. Ugh not sure what to do yet.
EDIT: Btw I tested with gmail and didn't notice the green in the app since it's light gray but as soon as I drop down the notification panel (w/dark mode on) the green is immediately noticeable. It's only with very dark gray that lookd almost black which is what Samsung use for all their apps (settings, calculator, messages, etc.) when dark mode is on. I wish they used true black so pixels were completely off like with facebook messenger.
I am also unsure what to do. I have to say, however, that this is the device that gives me the most uncertainty ever. For this opportunity price I want a good to perfect display. @vwite Don't you think that the dark grays are too bright as well? It wouldn't be so visible otherwhise. I also sent my picture to the 'write the CEO' address and a pledge to be aware of the issue:
https://www.samsung.com/uk/info/contactus/email-the-ceo/ (example: UK)
I will try checking in a store, which will be totally hard because of the light there. Maybe I will just order another one... Or a plus ?
Made another picture 'for the CEO' :silly: and will also attach the source image I showed on screen. To replicate:
- 25% brightness
- Show 5% picture in a dark room
- made picture with an S10+ on full auto
corwin_amber said:
Made another picture 'for the CEO' :silly: and will also attach the source image I showed on screen. To replicate:
- 25% brightness
- Show 5% picture in a dark room
- made picture with an S10+ on full auto
Click to expand...
Click to collapse
Thanks! Please let me know what they say.
Actually I ordered an S20+ now and will most likely just give the Ultra back in the first 2 weeks. Yes, it is a pain, but I really can not stand the screen as is. I am even putting it in its box before I have the plus and using my S10+ in the meantime - the green tint is driving me a little nuts.
I am having a hard time justifying the thickness and weight for a feature I hardly use (amazing zoom) while having an inferior main camera at the same time (focus issues).
i noticed this issue too on my 20+
it seems to be worse some days less bad other days
it also is very dependable on how much ambient light is around - eg is much more noticeable in dark rooms
and yes is an issue with Samsung dark mode that isn't true black but some dark greyish
other then this - all other colours look amazing = so not sure if the screen itself is defective
I do hope there will be a software update that will fix this or make it less visible

Screen Problem

Hello, I've noticed that when I use my phone in night mode I can see green areas on the screen. Are there other people in my case?
No on mine so far. Black is black no greenish.
is see this too sometimes esp at night when its dark in the room with no other lights - in the day when its brighter is not visible
it does seem to be an issue with some backgrounds as i noticed in apps where the background is black (not dark grey or greysh) this isnt visible
so not sure whats going on - but i didnt had this issue with the s10 .....
tim2london said:
is see this too sometimes esp at night when its dark in the room with no other lights - in the day when its brighter is not visible
it does seem to be an issue with some backgrounds as i noticed in apps where the background is black (not dark grey or greysh) this isnt visible
so not sure whats going on - but i didnt had this issue with the s10 .....
Click to expand...
Click to collapse
Yes, I have the same problem, it comes from the screen according to what I read on some forums. Some OLED screen have problems. I think I'm going to get it exchanged.
no issues so far with mine s20+ (exynos variant), however if i were you i would seek to get replacement
slabs?
tim2london said:
slabs?
Click to expand...
Click to collapse
Screen sorry ^^
ok but how do you explain that its only visible sometimes and then sometimes is not?
and is only showing on grey backgrounds etc
like now i have the phone in my hand and is looking ok
the best place to test is in the samsung daily or SMS app - the top part of the app thats meant to be black was sometimes showing more like greyish - now is proper black again?
like i said it seems to be dependent on the ambient light - i wouldnt want to replace the phone if its not an actual issue esp since it took me a whole day to get my stuff transferred and setup
tim2london said:
ok but how do you explain that its only visible sometimes and then sometimes is not?
and is only showing on grey backgrounds etc
like now i have the phone in my hand and is looking ok
the best place to test is in the samsung daily or SMS app - the top part of the app thats meant to be black was sometimes showing more like greyish - now is proper black again?
like i said it seems to be dependent on the ambient light - i wouldnt want to replace the phone if its not an actual issue esp since it took me a whole day to get my stuff transferred and setup
Click to expand...
Click to collapse
Oled is known for reduced quality the lower brightness you go.
But all units will have varied levels of tints etc
In my case..
Unfortunately, yes. Also, it is more noticeable at 120Hz.
There is a thread about that in the Ultra section:
https://forum.xda-developers.com/galaxy-s20-ultra/help/green-tint-dark-background-low-t4065621
I also tried to get people with that problem in the S20+ section:
https://forum.xda-developers.com/galaxy-s20-plus/help/s20-ultra-oled-bad-uniformity-bright-t4067051
It is rather horrible and i noticed it right away the first time I used it in the dark. I think it can not really be fixed in Software, but it can be probably made less noticeable, as 120Hz is making it worse.
I wrote an 'email to the CEO' about that here:
https://www.samsung.com/uk/info/cont...email-the-ceo/ (example: UK)
If its same as below thread...Welcome to OLED!
Colour blending (blacks) problem
https://forum.xda-developers.com/galaxy-s9-plus/help/colour-blending-blacks-problem-t3765385
Had this on my S9+ and S10. Nothing can be done about it.
Using OLED since 2010. Starting with Symbian Nokias, Windows Phone Nokias and switching over with the S8+ - OLED only.
I suppose - never had a display that bad in this regard. At least never noticed it that bad right away. The upper right corner is almost always showing a green tint.
But I am glad, if it is not too widespread - then the S20+ I ordered will probably be fine.
in your case what?
Pardon me?
kaktus_78 said:
In my case..
Click to expand...
Click to collapse
corwin_amber said:
Pardon me?
Click to expand...
Click to collapse
sorry it was for an earlier post with a screenshot of a call in russian
Hi,
Just attached a picture of my screen with adaptive brightness with low light with screen at 120Hz.
At 60Hz the screen is even, at least almost even.
What is your opinion?
Thank you in advance.
Report it to Samsung, probably get it exchanged, if possible and it really bugs you.
I gave back the ultra because it was too much green tint. The plus has it as well, not as bad as the ultra.
no.one.writeme said:
Hi,
Just attached a picture of my screen with adaptive brightness with low light with screen at 120Hz.
At 60Hz the screen is even, at least almost even.
What is your opinion?
Thank you in advance.
Click to expand...
Click to collapse
Bottom right corner is way darker and reddish.
corwin_amber said:
Report it to Samsung, probably get it exchanged, if possible and it really bugs you.
I gave back the ultra because it was too much green tint. The plus has it as well, not as bad as the ultra.
Click to expand...
Click to collapse
Hi,
Return it and seller ordered another device to replace this one. Hope that the new device is ok
Best regards.

A71 has a better screen than S20s?

I have just used an A71 with Super Amoled "Plus" and I can say that it has a better screen than the S20+ in terms of white calibration and contrast, S20s with Dynamic Amoled are all too warm and when you try to adjust it does not fit at all. Subpixel rendering is also noticeable due to its pentile panel. I know it's a matter of getting used to it but it's hard to see.
theforbidden said:
I have just used an A71 with Super Amoled "Plus" and I can say that it has a better screen than the S20+ in terms of white calibration and contrast, S20s with Dynamic Amoled are all too warm and when you try to adjust it does not fit at all. Subpixel rendering is also noticeable due to its pentile panel. I know it's a matter of getting used to it but it's hard to see.
Click to expand...
Click to collapse
It is not better starting from Note10 samsung made the displays warmer to decrease stress on eyes , but you can adjust it manually throw display settings see attached screenshot, make it all way left to cool the tap advanced settings and tune the red and green to get same results as A71 , and make sure to close blue light filter also
hoss_n2 said:
It is not better starting from Note10 samsung made the displays warmer to decrease stress on eyes , but you can adjust it manually throw display settings see attached screenshot, make it all way left to cool the tap advanced settings and tune the red and green to get same results as A71 , and make sure to close blue light filter also
Click to expand...
Click to collapse
You dont get the same results, I can confirm that. They have diferent technology and is very noticeable.

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