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Is the pink tint on all devices or is it a defective screen issue?

Hi, I have noticed the pink tint to the screen when using adaptive brightness below 30-40% and was wondering if it effects all devices.
I have read a lot of people talking about it and that it happens because the screen goes so dark and some people are saying that it is supposed to happen. Is this true and if not is it effecting all devices?
I am on my 3rd device now the first one i took back after a few hours as the screen was tinted really yellow and uneven and my second one had image retention pretty bad and would happen after 5 seconds of the nav bar being displayed and i dont know if it effected them as i didnt try adaptive brightness as i didn't ha e them for long enough.
The one thing i find really weird though is that i have been using the lux app to test if it was to do with the phone going so dim and while there is a slight pink tint when putting the brightness down on the lux app it is no where near as bad as when adaptive brightness is being used and the lux app goes a lot darker.
Thanks.

I've seen all does it specially at night. I consider this is normal

Its because you're brightness is below 0. If you use adaptive brightness at night its lower than 0 without adaptive brightness. You will see the same thing if you use the lux brightness app.
Edit: I noticed you used the lux app, you're correct its not as bad with it, but it's still there. I could be a software implementation or a bug for all we know.

So it is actually on all devices and not a select few?
I got 7 days to return it for another one but if it is on all devices and there is nothing that can fix it i dont think there is no point in risking it for another nexus 6 that could have a worse screen like uneven colours.

lew87ys said:
So it is actually on all devices and not a select few?
I got 7 days to return it for another one but if it is on all devices and there is nothing that can fix it i dont think there is no point in risking it for another nexus 6 that could have a worse screen like uneven colours.
Click to expand...
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Search
http://arstechnica.com/gadgets/2014...e-premium-price-still-comes-with-compromises/

lew87ys said:
So it is actually on all devices and not a select few?
I got 7 days to return it for another one but if it is on all devices and there is nothing that can fix it i dont think there is no point in risking it for another nexus 6 that could have a worse screen like uneven colours.
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This is more of a feature than a defect, frankly...
Not that it is pink, but that it can be dropped down as low as it can.
Basically, there is a minimum brightness threshold. The lower the brightness, the less power it consumes. If you set the brightness below a certain point, the colors (because of the nature of the amoled) will start to mess up a bit. Most vendors will set the minimum brightness high enough to not have this happen. Google sets it a bit lower to save a bit more power, without making the colors go *entirely* crazy by setting it WAY too low.

Its made like that to conserve power. All nexus 6 are like that

I thought it was a defect too until I started researching and like someone suggested turned off adaptive brightness which made the tint go away completely even at lowest brightness setting.
Sent from my Nexus 6 using XDA Free mobile app

pwc realtor said:
I thought it was a defect too until I started researching and like someone suggested turned off adaptive brightness which made the tint go away completely even at lowest brightness setting.
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Adaptive brightness is actually a really nice feature.
If the pink bugs you too much, you can (if you know your way around a compiler, that is...) bump up the minimum a little.

What if adaptive brightness is off, and the brightness is set to at least 70%, and the pink tint crap still happens? kernel issue? nougat issue? Because it's very annoying, randomly happens to me. usually, going into twrp and clearing cache fixes it. sometimes it doesn't though.
Help.
EDIT
Never mind. I figured it out. it was night mode that was causing the pink tint via purenexus settings.

Set sun brightness mode?

I think it's just not possible to manually set highest brightness of display in Android 9. But is there any way how to set it via some app or edit something?
I know there is toggle for adaptive brightness, but setting it for full brightness will just make display cca 70% of possible brightness. The 100% brightness is on only when sunlight comes to the light sensor. When I use Note9 for flying DJI drone on sunlight, I want to have 100% display brightness for that 10 minutes of flight. It's just sooo annoying that I have to use separate flashlight - shining to the Note9 sensor to have full brightness on sunny day in shadow. Otherwise, just manually set brightness is not enough for flying and reflections are stronger than display...
Thanks for ideas!

jd14771 said:
Really easy fix..
- pull down notifications
-expand all notifications
-expand brightness settings by hitting the downward facing arrow (brightness settings)
- select "show brightness settings on top"
Now you can bump up your display brightness for those 10 minutes. It would be absurd to spend any more time on an app selection
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Click to collapse
Thanks, but I can say I'm kind of poweruser So again - When you set brightness manually all the way up, it's just 70% of possible brightness. It still uses light sensor to detect light and if you face the sensor (still manually on full) towards the sun, ONLY THAN you'll get 100% of hardware brightness.

Haha, okay... Maybe somebody else with Note9 and experience with Samsung's "outdoor display mode" may know. Anyway, see the attached image, maybe you get that point from other user...

I've use to do it on my Note 2 this way, I don't know if it will be any help. I know what you mean, the extra brightness is there, you just want to be able to switch it manually.
https://forum.xda-developers.com/showthread.php?t=2008197

konvalink said:
I think it's just not possible to manually set highest brightness of display in Android 9. But is there any way how to set it via some app or edit something?
I know there is toggle for adaptive brightness, but setting it for full brightness will just make display cca 70% of possible brightness. The 100% brightness is on only when sunlight comes to the light sensor. When I use Note9 for flying DJI drone on sunlight, I want to have 100% display brightness for that 10 minutes of flight. It's just sooo annoying that I have to use separate flashlight - shining to the Note9 sensor to have full brightness on sunny day in shadow. Otherwise, just manually set brightness is not enough for flying and reflections are stronger than display...
Thanks for ideas!
Click to expand...
Click to collapse
There are a number of apps in the 'Playstore' that purport to do what you want.
The one that I use is called 'High Brightness Mode', it's a free app and enables you to place a widget that can be used to manually crank up the brightness to beyond the 100% shown by the brightness indicator,.
According to the instructions, it goes a lot higher if your device is 'rooted', but nonetheless works on 'unrooted devices too.

It seems rooting is the only way how ti get 100% brightness...
@jd14771 - here is the sample:

jd14771 said:
Try turning on adaptive brightness.
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Click to collapse
To achieve what? I want to have 100% brightness MANUALLY.
No adaptive. No automatic. No light sensor.

jd14771 said:
could have just tried turning on adaptive brightness. from what i read outdoor mode wont trigger unless you are on adaptive brightness at exactly 100% brightness.
if i had to guess its because the max brightness in the sun causes display burn in- so to limit the issue they only allow adaptive brightness to go past the 75% software max
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Click to collapse
Yes, but as the OP was trying to point out, the software absolute max is actually about 15-20% below the hardware absolute max capability.
This can be enabled by tweaking the sys file related to brightness, to rewrite the specific line, you need to be 'rooted'.

jd14771 said:
I have yet to see you provide instructions on how to do that.
regardless you dont need to be rooted to get the extra brightness, conditions have to be met in order to save the screen from burn in abuse. There are tons of people reporting burn in from the outdoor mode. it only make sense that only adaptive brightness can take the screen into danger territory, probably has safegaurds built in to avoid damage to this $1000 phone. so far ive provided more insight than anyone.
Beggars can't be choosers.
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Once 'rooted' there are a number of 'Magisk/Xposed' modules that can be installed to push the brightness beyond what's available by default.
Did you want me to detail the 'rooting' and install process?
If you do a quick 'Google' you'll find a number of threads on 'XDA', 'Reddit' etc, going back a number of years which are the focus of the OP's issue.

Guys/Gals
ENOUGH with the off-topic flaming and spam posts.
Let's help each other instead of talking down.
I'll delete every flaming or spam post.

jd14771 said:
just delete the whole thread, op was flaming.
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Since YOU'RE one of the ones I was referring to as spamming and trolling, last warning.
If the OP wants thread deleted, he can make a RP or PM me directly.
Keep spamming this thread with nonsense, and I'll get infract-happy.

konvalink said:
To achieve what? I want to have 100% brightness MANUALLY.
No adaptive. No automatic. No light sensor.
Click to expand...
Click to collapse
The brightness slider full to the right, regardless of the adaptive brightness setting is as bright as the phone gets.
How do I know this? Because e-ticket apps such as Ticketmaster and mobile payment apps like Samsung Pay go full brightness when showing barcodes, and there is no difference between manually set 100% brightness and 100% brightness when set by Ticketmaster and Samsung Pay.
The problem you are facing is caused by those who wrote the software that displays the video feed from the drone.

pTeronaut said:
The brightness slider full to the right, regardless of the adaptive brightness setting is as bright as the phone gets.
How do I know this? Because e-ticket apps such as Ticketmaster and mobile payment apps like Samsung Pay go full brightness when showing barcodes, and there is no difference between manually set 100% brightness and 100% brightness when set by Ticketmaster and Samsung Pay.
The problem you are facing is caused by those who wrote the software that displays the video feed from the drone.
Click to expand...
Click to collapse
incorrect, the sun brightness method as well as youtube and the photos app does go brighter than the screen is normally i have max brightness past the line adaptive brightness off performance mode turned on with brightness set to 10+ specifically which boosts the brightness past the normal brightness as well as vivid mode but still not the same as the brightness you get in youtube apps or on the photos app, the xperia 1 and xperia 5 does this too and i thought it was specific to them.

bradhoschar said:
Since YOU'RE one of the ones I was referring to as spamming and trolling, last warning.
If the OP wants thread deleted, he can make a RP or PM me directly.
Keep spamming this thread with nonsense, and I'll get infract-happy.
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Seriously, man, you need to pay more attention to the threads in these forums. They are overrun with this kind of bickering now, and not a peep out of you.

gruuvin said:
Seriously, man, you need to pay more attention to the threads in these forums. They are overrun with this kind of bickering now, and not a peep out of you.
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Please report any posts containing rule-breaking content. I assure you, we WILL see them and act on them.
Thanks!

pTeronaut said:
The brightness slider full to the right, regardless of the adaptive brightness setting is as bright as the phone gets.
How do I know this? Because e-ticket apps such as Ticketmaster and mobile payment apps like Samsung Pay go full brightness when showing barcodes, and there is no difference between manually set 100% brightness and 100% brightness when set by Ticketmaster and Samsung Pay.
The problem you are facing is caused by those who wrote the software that displays the video feed from the drone.
Click to expand...
Click to collapse
Nope

display brightness

Greetings,
Just received a used device and noticed my unit won't physically lower in brightness at around 25 percent. What I mean is that at around the 25 percent mark, I am unable to perceive it getting any lower when set at a lower percentage. I've also noticed that when I have the brightness at a high percentage and then quickly lower it to the minimum, that the display will at first be quite dim then will suddenly raise itself to a slightly brighter minimum. I do not have auto brightness on, nor any filter apps active while testing. Just wondering if this issue is isolated to my device. Thank you for reading my concern. If anything is unclear, I could try taking a video of the issues. Anyone else with these issues? I've searched the web to no avail.

i just bought a used device as well and mine has the same issues. the backlight seems to flicker on the second screen at low brightness and below about half the second screen is noticably dimmer. its unfortunate that they didn't put a lot of effort into the screen software or quality considering its the main gimmick of this phone, but it is made by ZTE after all. the price you probably paid for one of these things is a lot more representative of the quality than the original MSRP. But its still a fun gimmick even with all the flaws.

stevegalaxius said:
i just bought a used device as well and mine has the same issues. the backlight seems to flicker on the second screen at low brightness and below about half the second screen is noticably dimmer. its unfortunate that they didn't put a lot of effort into the screen software or quality considering its the main gimmick of this phone, but it is made by ZTE after all. the price you probably paid for one of these things is a lot more representative of the quality than the original MSRP. But its still a fun gimmick even with all the flaws.
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Click to collapse
Thanks for your thoughts and input. Yeah this is quite unfortunate on how the phone turned out. I also see the flicker on the second display. But as you mentioned, the device is indeed quite fun. I'm actually thoroughly enjoying the device especially with books and comics reading in the extended mode. I tend to do some late night reading, so that was the reason why I brought up the display issue as I had wanted to get the display as dim as possible before applying a filter. Hopefully one day we'll get root to check out if we can lower the display minimum brightness level along with other lower level system modifications.

axxtran said:
Thanks for your thoughts and input. Yeah this is quite unfortunate on how the phone turned out. I also see the flicker on the second display. But as you mentioned, the device is indeed quite fun. I'm actually thoroughly enjoying the device especially with books and comics reading in the extended mode. I tend to do some late night reading, so that was the reason why I brought up the display issue as I had wanted to get the display as dim as possible before applying a filter. Hopefully one day we'll get root to check out if we can lower the display minimum brightness level along with other lower level system modifications.
Click to expand...
Click to collapse
apparently a few weeks ago someone released TWRP for this device. its not quite a root but it still gives you root access to change the build.prop and some low level system settings. TWRP is the sign that there is some kind of development happening but i wouldn't hedge your bets on anybody fixing the screen issues even with some kind of kernel modification

stevegalaxius said:
apparently a few weeks ago someone released TWRP for this device. its not quite a root but it still gives you root access to change the build.prop and some low level system settings. TWRP is the sign that there is some kind of development happening but i wouldn't hedge your bets on anybody fixing the screen issues even with some kind of kernel modification
Click to expand...
Click to collapse
That is definitely a most welcome update. I'm curious on what build your device is on since you mentioned having similar issues to mine. I am on b30 myself and will be flashing to b37 when I get a chance to see if there are any differences.

Red tint on dark grey ie dark theme on brightness below 50%

There is a noticeable red tint on dark grey color everywhere while the brightness slider is set in range of 0-49%. Effect is more pronounced while using 120hz refresh rate and less while using other modes. 50% and above and the tint just disappears.
Does anybody suffers with the same issue? This is indian variant of the phone.
Attached image can be used for testing.

This seems to be a problem with many ROG 2 owners. The Red tint is massive at low brightness. And yes, this is a screen problem not a software issue.
Better try replacing the unit. But there is no guarantee new phone won't have the same problem as many people are reporting this issue.
I think maybe Asus is buying cheaper display from some other manufacturer, not Samsung. Here is a similar complaint thread on Asus forums -
https://zentalk.asus.com/en/discussion/11085/display-red-tint-issue-on-my-rog-2
And if it very troublesome for you, simply return it, ask for refund and buy some other device.

I will probably do that but samsung has that stupid hole. I sold my op 7 pro for this.
But 1 thing that is interesting is at 60hz the red tint is visible at 0-10% range. And the higher the refresh rate the more brightness range it covers like at 120hz its visible at 0-40% range. At 50% nothing of such sort is visible at any refresh rate.
It mostly has to do with that 1ms gtg ie grey to grey response time at high refresh rate. And yes all units will have that issue maybe not at 60hz but definitely at 120hz.
Lets see if asus has any response. I still have my return window left.

And now you know why others don't have 120Hz AMOLED panels, and why reviewers complain about the minimum brightness being too bright. Asus tried to mitigate these issues because the panels are only acceptable above a certain brightness.

I have an Indian unit and have the red tint. I don't have an issue as i keep my screen at 50% brightness. Hope in Android 10 apps use black instead of dark grey for the dark mode

madsud said:
I have an Indian unit and have the red tint. I don't have an issue as i keep my screen at 50% brightness. Hope in Android 10 apps use black instead of dark grey for the dark mode
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Reality is that most apps including google ones are going the way of dark grey background, not pure black.
Also always 50% brightness? Don't you turn it down in room with no lights or low lights?
---------- Post added at 08:29 AM ---------- Previous post was at 08:13 AM ----------
sanurocks said:
I will probably do that but samsung has that stupid hole. I sold my op 7 pro for this.
But 1 thing that is interesting is at 60hz the red tint is visible at 0-10% range. And the higher the refresh rate the more brightness range it covers like at 120hz its visible at 0-40% range. At 50% nothing of such sort is visible at any refresh rate.
It mostly has to do with that 1ms gtg ie grey to grey response time at high refresh rate. And yes all units will have that issue maybe not at 60hz but definitely at 120hz.
Lets see if asus has any response. I still have my return window left.
Click to expand...
Click to collapse
You sold OP7 Pro for this? Seriously bro? I mean unless one is a gaming fanatic, ROG doesn't make sense for someone who wants a overall great experience. It was evident that Asus has cut corners at many places when they priced it so low.
Even if it's 60Hz, red tint shouldn't be there. It's an example of not a good display.

Abhi Dahiya said:
You sold OP7 Pro for this? Seriously bro? I mean unless one is a gaming fanatic, ROG doesn't make sense for someone who wants a overall great experience. It was evident that Asus has cut corners at many places when they priced it so low.
Even if it's 60Hz, red tint shouldn't be there. It's an example of not a good display.
Click to expand...
Click to collapse
OP7 Pro had its issues, I bought it on first sale. camera focus was not good, camera output was soft around corners while clicking text/documents for sharing. the screen though gorgeous looking was actually hard to use. i can recall a particular issue - i use phone pe and the menu for edit beneficiary was just in the screen space where it started to become edge and it required multiple touch to activate it.
actually rog 2 feels more premium in hand and the weight distribution is quite good as compared to op7 pro, it was top heavy. i have large hands so actual phone size was not the issue with either op7 pro or rog 2.
if one can ignore this red tint issue almost every aspect is better than op7 pro. screen above 50% brightness( which is actually not 50% screen brightness output, its just 50% slider) hdr in video playback works very well, its a quite brighter than op7 pro. Sharpness is less but only apparent on close viewing. Sound quality is better on speakers and louder too. Screen smoothness is much better. gets less hot then op7 pro, Cyber hunter on full was 47-48 on op7 pro, its 44-45 on rog ii. and the battery life is way better. There are much differences to be pointed out but the thread will grow.
Though the phone might not look professional in a meeting and i don't think it will receive timely android updates. But as a usable device i find this better than op 7 pro. If the grey management was not an issue this would have been almost unbeatable in its category and even in a higher category. op7 pro costed me 51.5k after bank discount, this costed 34k after bank discount.

Abhi Dahiya said:
Reality is that most apps including google ones are going the way of dark grey background, not pure black.
Also always 50% brightness? Don't you turn it down in room with no lights or low lights?
Agree. Said just a hope. The objective of dark mode is also to take advantage of amoled which is not met by grey. Hoping common sense prevails.
I hardly use the mobile in low light, if i do, i dont turn the brightness down
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I'm swapping my Galaxy S8 in for this. How certain are we that this red tint is a hardware issue?

GeekGod said:
I'm swapping my Galaxy S8 in for this. How certain are we that this red tint is a hardware issue?
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Definitely a hw issue. Its only notcieable between 15 to 30%. I wouldnt worry about it.

madsud said:
Abhi Dahiya said:
Reality is that most apps including google ones are going the way of dark grey background, not pure black.
Also always 50% brightness? Don't you turn it down in room with no lights or low lights?
Agree. Said just a hope. The objective of dark mode is also to take advantage of amoled which is not met by grey. Hoping common sense prevails.
I hardly use the mobile in low light, if i do, i dont turn the brightness down
Click to expand...
Click to collapse
If you wanna see the issue:
1) go to a dark room or in a room with almost no light.
2) add "Screen Frequency" toggle in the status bar, and lower the status bar to show the toggles;
3) lower the brightness above 40-50%;
4) use the toggle to swap frequency from 60Hz, 90Hz and 120Hz.
You will notice the colour of the status bar itself changes… it's like is 80%grey and 20%red on 60Hz; 90%grey and 10%red on 90Hz, 50%grey and 50% red on 120Hz (it's like the status bar is dark-brown coloured).
And, then again, increase slowly the brightness: the status bar will be "magically" turn back to its natural color, dark grey.
This is a big issue for a smartphone which costs about 960American dollars here in Italy! I'm thinking about to return it...
Click to expand...
Click to collapse

NajimKiSaad said:
madsud said:
If you wanna see the issue:
1) go to a dark room or in a room with almost no light.
2) add "Screen Frequency" toggle in the status bar, and lower the status bar to show the toggles;
3) lower the brightness above 40-50%;
4) use the toggle to swap frequency from 60Hz, 90Hz and 120Hz.
You will notice the colour of the status bar itself changes… it's like is 80%grey and 20%red on 60Hz; 90%grey and 10%red on 90Hz, 50%grey and 50% red on 120Hz (it's like the status bar is dark-brown coloured).
And, then again, increase slowly the brightness: the status bar will be "magically" turn back to its natural color, dark grey.
This is a big issue for a smartphone which costs about 960American dollars here in Italy! I'm thinking about to return it...
Click to expand...
Click to collapse
This means international version suffers with the same issue. What they have done to achieve such high refresh rates and such low response times must be the issue. Now if someone from asus can confirm if this tinting can be fixed via software update or not that will be the main factor for either keeping or returning the phone. The issue is already raised in zentalk forum and i have also commented there and the mod also has accepted the issue in his demo unit.
https://zentalk.asus.com/en/discussion/11085/display-red-tint-issue-on-my-rog-2
Click to expand...
Click to collapse

It's so minor I've literally never noticed it (until using your test image just now) and I've been using this phone for almost a month now. I'm filing this under not an issue for me.

Not an issue for me. My brightness is pretty much always set to 50% and 90hz - never even noticed it. If you're running brightness down around 20% then you're either pretending to be on an Ethiopian diet, or you have an issue with over sensitivity of your retinas and should get it checked out asap

bluegizmo83 said:
It's so minor I've literally never noticed it (until using your test image just now) and I've been using this phone for almost a month now. I'm filing this under not an issue for me.
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This only affect night time usage with lights out or in low lit environments where you will keep your screen brightness low. Daytime usage is perfectly fine as 50% slider is not actually 50% screen brightness. So slider % remains high during day.
cheetah2k said:
Not an issue for me. My brightness is pretty much always set to 50% and 90hz - never even noticed it. If you're running brightness down around 20% then you're either pretending to be on an Ethiopian diet, or you have an issue with over sensitivity of your retinas and should get it checked out asap
Click to expand...
Click to collapse
Its clearly mentioned that its a non issue with brightness slider in range 50% and above. So you wouldn't notice it.
And by the way if you are using that high of brightness in low lit or lights out environment then maybe you have less sensitive retina and maybe get it checked.
This will only affect people who use this for night time reading and naturally dim the screen to read comfortably. If people use normal day brightness at night this will be a non issue for them.
The main point is is this a hardware or a software issue. And i have already hypothesized why this might be happening. You can read the posts above.

sanurocks said:
This only affect night time usage with lights out or in low lit environments where you will keep your screen brightness low. Daytime usage is perfectly fine as 50% slider is not actually 50% screen brightness. So slider % remains high during day.
Its clearly mentioned that its a non issue with brightness slider in range 50% and above. So you wouldn't notice it.
And by the way if you are using that high of brightness in low lit or lights out environment then maybe you have less sensitive retina and maybe get it checked.
This will only affect people who use this for night time reading and naturally dim the screen to read comfortably. If people use normal day brightness at night this will be a non issue for them.
The main point is is this a hardware or a software issue. And i have already hypothesized why this might be happening. You can read the posts above.
Click to expand...
Click to collapse
I don't think I would ever find myself in a pitch black room with just my phone and no other background light of any sort. I'm not that kinda guy
If you head over to the Asus forum, this is not a new issue. Asus have declared the reddish tint is normal behaviour of the screen at high Hz, so its hardware, not software, and operating as it should. Every handset will be exactly the same. If it bothers you too much, then maybe look at the Nubia Red 3S or Xiaomi Blackshark 2 instead. For me, its a non issue as like you said, i never drop below 50% brightness, and my retinas are poor, so I would never see it.. :fingers-crossed:

I always thought that xda subscribers were above fanboy-ism...

cheetah2k said:
I don't think I would ever find myself in a pitch black room with just my phone and no other background light of any sort. I'm not that kinda guy
If you head over to the Asus forum, this is not a new issue. Asus have declared the reddish tint is normal behaviour of the screen at high Hz, so its hardware, not software, and operating as it should. Every handset will be exactly the same. If it bothers you too much, then maybe look at the Nubia Red 3S or Xiaomi Blackshark 2 instead. For me, its a non issue as like you said, i never drop below 50% brightness, and my retinas are poor, so I would never see it.. :fingers-crossed:
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To each his own. :good:

Xebeck said:
I always thought that xda subscribers were above fanboy-ism...
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Click to collapse
We are all fans of something! :laugh:
This is my first Asus phone, and I'm coming from a long line of samsungs (the latest being the Note10+) and for what I do with the ROG2, its performance creams anything Samsung has ever produced.. so, when a negligible issue like red tint (don't forget Samsung had blue, sony had red also in the past) I'm willing to forgive it because 99% of the time it doesnt affect me. If you call that fanboy-ism, then so be it..

Looks like, red tint in the display, issue is widespread in most of the ROG 2 phones .
Asus has confirmed the same, but refused to say, if it is a SW issue or HW issue.
ASUS India @asusindia
Replying to @justreach2ram
Hi there, our team has identified this issue and we have given high priority to solve it as soon as possible. Request you to cooperate for the same.
sanurocks said:
There is a noticeable red tint on dark grey color everywhere while the brightness slider is set in range of 0-50%. Effect is more pronounced while using 120hz refresh rate and less while using other modes. 50% and above and the tint just disappears.
Does anybody suffers with the same issue? This is indian variant of the phone.
Attached image can be used for testing.
Click to expand...
Click to collapse

Question True AMOLED display ? Is my device defective ?

Hi. I don't have any way to show this but my unit has what I think is backlight bleed when displaying a fully black (#000000) picture.
This bleeding is somehow especially visible at 35% (don't ask me why) and 100% brightness.
Now, it's only really visible when in the dark and when my eyes are used to it so it's not a big deal for daily use. However, this screen is supposed to be AMOLED which presumably works on the same principle of OLED displays.
My OnePlus 3T, with the same picture of a plain black background and with the brightness turned to the max shows no sign of any light whatsoever, as any true OLED display should.
My Zenfone 8 however has a weird pattern of tiny scattered dots and a few vertical lines you can barely make out all around the display and especially along the left edge of the display.
Can anyone with a Zenfone 8 check if they observe the same effect ? Like I said, it's only visible when your eyes are well accustomed to obscurity. I tried repeating the experiment yesterday when going to sleep and didn't see anything at first but I woke up later that night and sure enough, the same pattern was visible again.
In case you're doubting the file I used to test it out, here it is. A fully black pic. Of course you have to watch it in fullscreen so that no UI element can pollute your vision.
Any insight on what might be happening would be greatly appreciated.

Used your file and checked it in a pitch black place. Can't see nothing on full brightness. I still had the home-recent apps slider on the bottom but covered it with my finger. I couldn't tell where the screen is at all.
Maybe yours has some defect but if you cannot see it without hours of eyes adjustment than I think you are exaggerating quite a bit.
I've been using the LG V30 which also has OLED but it had a grey lighting always. Don't know why. This screen is much much better.

Kemez said:
Maybe yours has some defect but if you cannot see it without hours of eyes adjustment than I think you are exaggerating quite a bit.
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It's not like I was purposely trying to find flaws in the display. I was looking for a wallpaper while in bed and as I was zooming in a picture, I noticed as if what I initially thought were color variations in the image remained static on the screen. It wasn't due to a dirty screen. In doubt, I tested with the black picture and cranked the brightness to emphasize the issue and it was clear something was up.
So even if this issue can't be seen during the day, it's still something that can be seen in normal use when using the phone in the dark.
I just went from the my PC to a dark room and tried to reproduce it with brightness at 35% and I could see it in a matter of seconds.
One of the key factors that made me buy this phone in the first place is the AMOLED display. If it's actually defective, I might as well get it replaced. I would just like to know if it's worth the hassle or if every unit has that defect maybe due to something in the manufacturing process.

Can't see anything like that on mine. Totally black everywhere. Try exchanging the phone. Or just give it back and get another so they will not try to repair it.

Thank you very much for your feedback.

The only way the pixels can light is if they have current. Otherwise they are black as night.
Bad firmware or defective hardware.

Try clearing the system cache.

My display has that too, but only at 60 and 120 hz. At 90 Hz, the Dysplay is without lighting, so black as it should.

blackhawk said:
Try clearing the system cache.
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I don't have the option in the bootloader to reset the system cache, only "wipe data/factory reset".
I selected it thinking it would let me choose what to wipe but then it warned me about permanently deleting everything so I nope out of there.
Any other way I can do that ?

Mr.GSpecial said:
My display has that too, but only at 60 and 120 hz. At 90 Hz, the Dysplay is without lighting, so black as it should.
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Uh, interesting. I'll give this a try as well.

Nekrozys said:
I don't have the option in the bootloader to reset the system cache, only "wipe data/factory reset".
I selected it thinking it would let me choose what to wipe but then it warned me about permanently deleting everything so I nope out of there.
Any other way I can do that ?
Click to expand...
Click to collapse
It's in Settings somewhere under storage or memory.
On Samsung's it's on the boot menu.
Lol, a factory reset will definitely clear it

Mr.GSpecial said:
My display has that too, but only at 60 and 120 hz. At 90 Hz, the Dysplay is without lighting, so black as it should.
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That's it! I got the same behavior. Perfect black at 90hz, grey goo at 60 and 120. Since I'm not the only one, I suppose this is "normal". I guess that must be some sort of compromise they had to make for the display and they hoped people wouldn't notice.
It's a shame but at least I'm relieved knowing the screen works well at 90Hz. Since the 120Hz was not one of the key features I was looking for, this doesn't feel too bad a compromise to deal with.
Thank you everyone for your time and replies.

Interesting, I hope this is a software issue that can be fixed with an update...

Same.. When viewing black wallpaper @60/120 hz, it got scattered gray all over the place with a vertical line in the middle. Noticeable if you're in a dark room. Glad i'm not the only one

Alright, so I was able to capture a long exposure photo of the phone on a black screen. The issue appears on 60 and 120Hz like mentionned above. I found that it is more apparent on the 120Hz mode than 60Hz. 90Hz is flawless. The effect is kind of exagerrated, but it was the only way to visibly capture it.

Adaoh said:
Alright, so I was able to capture a long exposure photo of the phone on a black screen. The issue appears on 60 and 120Hz like mentionned above. I found that it is more apparent on the 120Hz mode than 60Hz. 90Hz is flawless. The effect is kind of exagerrated, but it was the only way to visibly capture it.View attachment 5350315
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Also during restart, the "Zenfone" loading screen appears like that in dark room.

Same behavior here, 120 and 60Hz are not truly black. 90Hz is.

Quick reply to add here that for those that use the phone at 60Hz, you can enable DC Dimming, that solved the issue for my device. 120Hz still needs to be figured out though...

Adaoh said:
Quick reply to add here that for those that use the phone at 60Hz, you can enable DC Dimming, that solved the issue for my device. 120Hz still needs to be figured out though...
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Interesting.
DC dimming can reportedly have its own drawbacks as well like skewing color rendering.
What is DC Dimming & Why it's Important for AMOLED Smartphones? - Gizmochina
OLED panels have a lot of advantages. They have better color accuracy and contrasts (including better blacks) and are thinner and brighter than traditional LCD panels. So, it’s no surprise that smartphone manufacturers are shifting to OLED panels for their smartphones. Even the mid-range ones...
www.gizmochina.com

after further investigation and trying to replicate on several ZF8's, it seems that this is a normal behavior. The questions is: is it hardware or software?