Question True AMOLED display ? Is my device defective ? - ASUS ZenFone 8

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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Click to collapse
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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Click to collapse
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?

Related

[Q] Please help- Screen TOO bright even at lowest setting! :( any remedy?

Hello everyone
I just got the Samsung I9000 Galaxy S yesterday and my worst nightmare has come true. I have sensitive eyes and keep brightness on all my equipment at the lowest level. I had asked someone before buying this phone and he told that it is manageable but now I find out that the screen is way toooo bright even at the lowest setting!
It strains the eyes + drains the battery.
Suppose we are not connected to internet through any source. Then if we refresh any widget we get the error "Please check your network access" and the screen goes dull in background. Now thats the perfect setting I would like for the phone.
Any idea how we can reduce the brightness even further through Mod or through factory settings or somehow?
I would really appreciate any help on this one.
Regards.
You are a vampire?
Bright on 35% level is correct.
staticduo said:
You are a vampire?
Bright on 35% level is correct.
Click to expand...
Click to collapse
Try fiddling with your phone in the morning, just as you've woken up. It works as a nice wake upper though. .
Android default min brightness is 8% (even though it reads 0%).
Two apps that give you less than 8%, both goes to 0% :
- Brightness Level by CurveFish
- Dimmer (Night Mode) by geekyouup
Also, look into changing your background color to black, it'll save you battery and be easier on your eyes. Lastly, the browser has its own brightness setting, found by hitting menu > settings.
Alternatively, only use under direct sunlight.
staticduo said:
You are a vampire?
Bright on 35% level is correct.
Click to expand...
Click to collapse
Lolz. I am just a human with sensitive eyes.
alovell83 said:
Android default min brightness is 8% (even though it reads 0%).
Two apps that give you less than 8%, both goes to 0% :
- Brightness Level by CurveFish
- Dimmer (Night Mode) by geekyouup
Also, look into changing your background color to black, it'll save you battery and be easier on your eyes. Lastly, the browser has its own brightness setting, found by hitting menu > settings.
Alternatively, only use under direct sunlight.
Click to expand...
Click to collapse
Thanks. I would try the dimmer and see if 0% helps somewhat though I have read that its only marginally better.
I am hoping that there should be a way to reduce it somehow since it gets reduced when we see some error just like I mentioned in 1st post.
I agree even at the lowest level its way to bright.
I have the curvefish brightness app, but even set to 0 its too bright for use in the darkness.
goyal.sanchit said:
Thanks. I would try the dimmer and see if 0% helps somewhat though I have read that its only marginally better.
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I've actually written that it's only a marginal improvement, but I omitted that opinion here since I think my opinion is less applicable to someone with sensitive eyes. You might perceive a 3x decrease than what I did, not sure if that'd still be enough.
Again, I think changing to a dark background will get you more mileage, if you haven't already done so.
alovell83 said:
I've actually written that it's only a marginal improvement, but I omitted that opinion here since I think my opinion is less applicable to someone with sensitive eyes. You might perceive a 3x decrease than what I did, not sure if that'd still be enough.
Again, I think changing to a dark background will get you more mileage, if you haven't already done so.
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Currently I am using a relatively black background but when surfing most webpages have white background and that really is painful! I guess I may have to look for some tinted screen protector!
i know this may sound strange, but If I wear my sunglasses at night while browsing it works quite well
You can also use tasker for lower brightness levels..
Sunglasses.
THUDUK said:
i know this may sound strange, but If I wear my sunglasses at night while browsing it works quite well
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I wear spectacles so cant wear sunglasses
dekeijzer said:
You can also use tasker for lower brightness levels..
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Click to collapse
I am currently using "Dimmer". It takes the brightness levels from 30% (Though in settings it show minimum only) to 10%. I have also tried "Quick settings" so I guess tasker would perform the same function.
When we have locked our screen and we have to unlock we have to slide the screen. When we do that it seems like we have to slide a transparent layer of glass which is quite dark.
Now I am no developer but is it technically possible to create an app which is like a layer of tinted glass on screen so that it dims the screen further?
Regards
I haven't tried the dimmer apps yet but I DO agree that I miss my iPhone which can be set to a much lower brightness level for better privacy, night vision, "before sleep reading".
but I think it has something to do with the display technology. The OLED for Samsung may not permit such low levels or so. I am not sure...
but I think it has something to do with the display technology. The OLED for Samsung may not permit such low levels or so. I am not sure...
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Click to collapse
At first even I thought that and I was worried about that. But there are some times for example when you get some error on the screen the major part of screen goes quite dull so it is indeed possible to do that technically I guess just that it cant be done through brightness.
I am baffled why did the Samsung/Android guys set lower level of brightness as option also. It would have cost them nothing and would have saved us a lot of strain and battery life.
PS: Is this the issue with Android or Samsung?
To someone with a bit more knowledge: how hard would this be to do something about? We all know the screen dims to a level that's not for the moment available to manually set some time before it shuts off, so it's got to be a way.
The screen is just too bright for me at the lowest setting - meaning it hurts me eyes (some pity here Samsung) and consuming a lot more battery than it needs to.
+1 for the app that will do this
got me new galaxy s for a couple of weeks now.. but really miss my old htc hd... the minimum backlight setting was awesome for nighttime reading/browsing.
switching on the sammy in bed in the week hours of the night makes my eyes burn! hehe.
an app to force lower or add a filter over the entire screen would be awesome!
samsung galaxy s has a SUPER AMOLED display which is why its bright even at lowest level.
Maybe your device shares our problem?
http://forum.xda-developers.com/showthread.php?t=765569
AnnihilatorSC said:
Maybe your device shares our problem?
http://forum.xda-developers.com/showthread.php?t=765569
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Click to collapse
Well I dont know for sure. The device has been working same since the 1st day. I guess its just that the brightness is too much for me. As far as the screen is concerned I didnt notice anything significant but any easy way to check about the problem?
Regards.

[Q] Random Dimming and Heavy Greenish Tint Issues?

Hello all. So I LOVE my Samsung Focus S that I purchased shortly after Thanksgiving Day...all except for one problem. My phone seems to dim permanently out of no where and nothing I do will correct it back to it's normal brightness except for restarting the phone. Automatic Brightness is off and the "Auto Display Intensity" in the Extra Settings category is off. Now I don't know if this is something that specific to Windows Phone or Samsung Focus S particularly? I'm going to take a guess and say it's on the Samsung Focus S that exhibits this behavior. I also can't figure out if it's a hardware failure or a software failure. I'm beginning to think it's a specific update that is used to update your "Extra Settings". I don't know at this point. I just want to know if others have this problem.
The 2nd issue is not so much a problem now but a concern. My first Focus S had a VERY HEAVY greenish tint to it that was immediately noticeable at the lightest of viewing angles. To give you an example of how bad it was, my buddy was looking at a picture of oranges he took with his iPhone4, I thought they were lemons from the side. I went to an ATT store near me and noticed the Galaxy S II exhibited this behavior as well but the Focus S on display did not. I quickly concluded it was a defective screen as it was REALLY noticeable. My buddy gave me a call and told me he was at an ATT store across town and noticed it on another Galaxy S II as well. I made the employee take out two brand new Focus S' and chose the best looking one. They both looked identical, although the one on display had an edge over all of them. Thing is, ALL of the ones I've seen have a very slight green/blue tint to them. Is this normal with Super AMOLED Plus? Is this the Gorilla Glass Coating? I love the colors and contrast on this phone but to be honest the brightness and viewing angle leave something to be desired, more-so the viewing angle. Sorry for the long post!
I just looked at some pictures of oranges to test this. They look nice and orange do me. at an angle the entire screen starts to lose its pop. But I would not call it green more so just dimmer. Can't complain with the blacks...if only more sites background was black lol.
at an angle the entire screen starts to lose its pop.
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Would you mind doing me a favor and looking at different viewing angles on a predominantly white screen? Every phone loses it's composure a bit as the viewing angle is more and more off but I've never seen them turn a different hue. Dim a bit like you said? Yes. I looked online to see if anyone else notices this bluish/greenish tint and many do but more notice it on the AMOLED screen though a few did complain about the Super AMOLED Plus. Thank you!
interresting
Ive been running the focus s since it came out and never noticed this "tint" issue...till today. a simple image of pure white, when viewed from above is fine, but as you change the view angle so does the white begin fade into the bluish haze.
now youre all probably going to hate me but i have a titan too. when i pull the exact same image, it does not fade into blue haze. my suspicion is one of two thoughts: a) the super amoled screen samsung uses has this side effect. b) the glass samsung uses creates this effect.
personally its not a deal breaker for me as i really enjoy the clarity of images and color the samgsung has to offer. that said, the titans inability to go true black are more noticable than a slightly bluish white. but thats purely personal prefence.
FWIW, ive tested red, green, and blue matching images. the only difference i see between the two is a decreased viewing angle on the thc in all aspects. screen display differences is the likely cause.
I can see the blue/green from those angles on white screens
kinda ugly actually
still a few days left to return and get the titan....
now youre all probably going to hate me but i have a titan too. when i pull the exact same image, it does not fade into blue haze. my suspicion is one of two thoughts: a) the super amoled screen samsung uses has this side effect. b) the glass samsung uses creates this effect.
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Click to collapse
It's good to see you have a Titan. The Titan is a pretty nice phone. Viewing angles seem quite good and the whites are SUPER bright. It's just the colors and blacks that suffer. Nice to know you can compare them though.
I can see the blue/green from those angles on white screens
kinda ugly actually
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Hey Alright, I'm not crazy. Heh. I'm going to run to a couple of more ATT stores and see what their display units look like. My buddy just got a GSII and he says he doesn't see it, so I'm going to investigate it as well.
BTW, I spoke to someone at Samsung online and he seemed to think it was "normal" and was caused by a Super AMOLED Plus characteristic. Unfortunately I didn't believe a lick he was telling me.
I'm off to find the perfect display! Wish me luck.
i went back to the store
they want to charge me $35 to restock what I have ^^ - and cant seemed to be talked out of it....
the display Focus S had the same exact issues
as does the GSII/SkyRocket from what I could tell
the Titan's whites make the Focus S whites looks blue - but the Focus S blacks look the Titans blacks look grey
and the color palettes are so radically different - for themes the green on the Titan looks like the lime on the Focus S, and the Titan has nothing that can compare to the green on the Focus S - its ridiculous the difference in the saturation and vividness - I can see what people say about the Titan producing more realistic images - but at the end of the day for most things the Focus S is just better looking, who cares if its accurate?
i imagine using the Titan for a while you would get used to it, but side by side it looks paltry in comparison
to be honest the iPhone display looked pretty good! - just too damned small after using a 4"+ sized display - I could never use something that small after using what I have
So I went to ABT Electronics today and looked at their Focus S. It's funny, all of these places, including the Apple store choose the most PERFECT displays they can find in their inventory to show to the public, when in reality your results can vary greatly. For example, the Focus S at ABT had a whiter/bluer screen than mine in terms of whites. It wasn't a huge difference but it was noticeable. Now I want a new whiter screen. My screen seemed buttery compared to the one I saw. We'll see how successful I am. I know I may sound picky but if I'm going to keep this phone for the next 2 years, I want it to look the way I want it.
I also checked out others with the same 4.3" Super AMOLED Plus and I didn't really see much of a green tint to them. In fact one looked yellowish directly and turned whitish on the side. Weird.
OLEd is still a newer technology, compared to LCD - guess there are still some kinks to work out
Yeah, a problem with AMOLED is a slight bluish hint but I don't believe the screen is a PenTile one.
The dimming has been a bit aggressive, I just usually cover the proximity sensor with my hand and let it work again.
Has anyone noticed a flicker (then on) when you unlock the Focus S screen? Sometimes the screen instantly brings up the lock screen sometimes a second after the flicker.
Alright guys. Back to one of the original topics of the Focus S randomly dimming? I think I figured it out. My phone is over heating and the phone is dimming to try and cool it down. No error messages of overheating or anything. I noticed it today when I was playing games on my phone while charging. My phone was pretty warm. Now up until this point, my phone had not dimmed randomly for a week or so, but this morning? BOOM. Dimmed on me. So it hit me. Screen Dimming + Warm Phone = Overheating. I put the phone down on the cold floor to cool down for 10 minutes. Turn the screen back on and guess what? Original Brightness is back.
Either I exchange my phone again or return it all together. I'm in a bind because I can't get the HTC Titan for the same price I got the Focus S for (Free with No Activation).
Has anyone noticed a flicker (then on) when you unlock the Focus S screen? Sometimes the screen instantly brings up the lock screen sometimes a second after the flicker.
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I have not noticed this at all.
i am in the same boat
almost potentially worthwhile holding out for a Nokia set (perhaps the 900/850)
i actually think I will keep the Focus S to be honest with you
in a year or a year and a half, call up Att and see what they will work for me if I really want to - I have heard lots of success stories about calling them up and getting very discounted phones deals
after revisiting the store - the titan screen looks like **** (IMO except for the whites) compared to the Focus S - and its just too damned big - the Focus S IMO is the perfect size
and all the Android GUI overlays suck ass - so no way I get a droid - and I will certainly not pay $100 for a year old iPhone.
**this fixed mine** random dimming and tinting
Don't throw anything because I just skimmed over the thread before I am responding. I have the Focus S and had that problem. I corrected it by going to "settings>extra settings" and turning off the "Auto Display Intensity" to make it stop adjusting. Unfortunately, that setting defaults to "On" every time the device is restarted. So you have to remember to turn it off. Maybe everybody thought of this, already, and your device does this, anyway, but mine is perfect with this setting off. So, I hope this helps!
matt
livejazz said:
Don't throw anything because I just skimmed over the thread before I am responding. I have the Focus S and had that problem. I corrected it by going to "settings>extra settings" and turning off the "Auto Display Intensity" to make it stop adjusting. Unfortunately, that setting defaults to "On" every time the device is restarted. So you have to remember to turn it off. Maybe everybody thought of this, already, and your device does this, anyway, but mine is perfect with this setting off. So, I hope this helps!
matt
Click to expand...
Click to collapse
I had to use the option in the "Brightness" page under Settings. The option on the Extra Settings page applies only when it is set to a white background.
Hopefully a future update will address this and improve the auto dimming. For now, though, it's set to bright all the time.
U only need to press the power button to let the phone go to sleep, then press power button again and almost immediately the custom brightness u set will be back.
Sent from my SGH-i937 using Board Express
Well the dimming issue hasn't happened to me in quite a while now. I decided to keep the phone. The fact that the display wasn't perfect wasn't enough to make me want to return the phone, especially since I got it for free with no activation fee on a 2 year contract. In the meanwhile, I'm just enjoying it. Funny though, Now that I've got a 4.3" screen, I want MORE. Bring on the 4.7"!
Jibberish18 said:
Well the dimming issue hasn't happened to me in quite a while now. I decided to keep the phone. The fact that the display wasn't perfect wasn't enough to make me want to return the phone, especially since I got it for free with no activation fee on a 2 year contract. In the meanwhile, I'm just enjoying it. Funny though, Now that I've got a 4.3" screen, I want MORE. Bring on the 4.7"!
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Click to collapse
After an Inspire and Focus S, I find the 4.7" display of my Titan too large to easily type in.
jeremyshaw said:
After an Inspire and Focus S, I find the 4.7" display of my Titan too large to easily type in.
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Click to collapse
I honestly only find it more difficult in landscape mode. Portrait mode is awesome though. I can't stop hitting the "a" button when trying to turn on caps lock. It's really annoying.
Jibberish18 said:
Well the dimming issue hasn't happened to me in quite a while now. I decided to keep the phone. The fact that the display wasn't perfect wasn't enough to make me want to return the phone, especially since I got it for free with no activation fee on a 2 year contract. In the meanwhile, I'm just enjoying it. Funny though, Now that I've got a 4.3" screen, I want MORE. Bring on the 4.7"!
Click to expand...
Click to collapse
Having had 3 Samsung Amoled phones (Galaxy S2, Skyrocket, Focus S) and a SAMOLED (Galaxy Note) I will say that Samsung doesn't display true whites, it's always blueish. As far as the dimming, Go to "Settings" > Exta Settings > Use Auto Display (Turn it off, however; it seems to enable itself after changing the theme from light to dark or vice versa, as well as after a reboot.)
tahpics said:
Having had 3 Samsung Amoled phones (Galaxy S2, Skyrocket, Focus S) and a SAMOLED (Galaxy Note) I will say that Samsung doesn't display true whites, it's always blueish. As far as the dimming, Go to "Settings" > Exta Settings > Use Auto Display (Turn it off, however; it seems to enable itself after changing the theme from light to dark or vice versa, as well as after a reboot.)
Click to expand...
Click to collapse
I believe all the phones you had, had a SAMOLED + display no? Also, I checked to see if changing the theme from light to dark turns the Auto Display feature back on and for me it does not. As for my dimming issue, it only seems to happen when the phone is plugged in and the battery is a bit warm.
Overall, I like this phone but I also don't. The display is quite delicious really. I've had it on half brightness for a few days now just to see how it looks to me and today I finally put it back to full brightness and the colors really are gorgeous. It's not perfect but I've learned to look past it I guess. Thank you for the reply.

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
Click to expand...
Click to collapse
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?
Click to expand...
Click to collapse
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.
Click to expand...
Click to collapse
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:
Click to expand...
Click to collapse
To each his own. :good:
Xebeck said:
I always thought that xda subscribers were above fanboy-ism...
Click to expand...
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

S20 FE Amoled screen is not truly black [issue]

I noticed at bedtime that this phone's panel didn't get those deep blacks we come to expect from samsung panels, i remeber in 2012 i had the same issue with my galaxy S2, i can see the black being lit like it was an LCD panel.
black image 0% brightness at 60hz = i can clearly see the display back-light.
black image 0% brightness at 120hz = it behaves like an amoled panel should, i can't see a thing.
The phone is running the latest software, oneui 3.1 + May patch.
Is this a known software bug? I think i'll return this phone because of this.
There is no backlight in a AMOLED display.
Firmware or hardware issue.
Or your eyes.
blackhawk said:
There is no backlight in a AMOLED display.
Firmware or hardware issue.
Or your eyes.
Click to expand...
Click to collapse
Definitely not my eyes unfortunately.
Try clearing the system cache
Try a hard reboot
Doesn't it have variable display frequency depending on what you're viewing ie static picture vs scrolling?
Could that be coming into play?
A glitch. You can't clear the graphic driver data but maybe the apk that controls the variable rate if separate from that.
You haven't done any major firmware upgrades, right?
I haven't play with the higher refresh rate displays, pretty much love my 10+/Pie.
Otherwise...
If you're within your return window, do so.
blackhawk said:
Try clearing the system cache
Try a hard reboot
Doesn't it have variable display frequency depending on what you're viewing ie static picture vs scrolling?
Could that be coming into play?
A glitch. You can't clear the graphic driver data but maybe the apk that controls the variable rate if separate from that.
You haven't done any major firmware upgrades, right?
I haven't play with the higher refresh rate displays, pretty much love my 10+/Pie.
Otherwise...
If you're within your return window, do so.
Click to expand...
Click to collapse
phone came already running latest software, i got it 3 days ago.
either you bought some cheap a$$ black market fakes or its some software fu*k up in the brightness department.
sivasankarpnair1998 said:
either you bought some cheap a$$ black market fakes or its some software fu*k up in the brightness department.
Click to expand...
Click to collapse
big retail store.
maybe some calibration issue? however someone tested on his device and had pitch black on both refresh rate so i think thats a faulty panel.
williamtavares said:
big retail store.
maybe some calibration issue? however someone tested on his device and had pitch black on both refresh rate so i think thats a faulty panel.
Click to expand...
Click to collapse
I've not personally used an S20 FE , but am a samsung user myself.
it should be pitch black.
are you sure the picture was absolute black and not slightly gray ?
if it was an absolute black image , the screen should not emit no light at all irrespective of what brightness you put it in , since it is black.
sivasankarpnair1998 said:
I've not personally used an S20 FE , but am a samsung user myself.
it should be pitch black.
are you sure the picture was absolute black and not slightly gray ?
if it was an absolute black image , the screen should not emit no light at all irrespective of what brightness you put it in , since it is black.
Click to expand...
Click to collapse
yeah i used different sources for this, including some apps.
i had many amoled display phones before, this was my first samsung phone since the s2 i had in 2012, bummer.
williamtavares said:
yeah i used different sources for this, including some apps.
i had many amoled display phones before, this was my first samsung phone since the s2 i had in 2012, bummer.
Click to expand...
Click to collapse
You're within your return window. Do it tomorrow. It should be black as night.
I have the same issue. 120hz is black but 60hz is not.
sonof said:
I have the same issue. 120hz is black but 60hz is not.
Click to expand...
Click to collapse
This affects all units, but some users doesn't even know what we are talking about.
Tested in 3 different units, same results, all returned.
williamtavares said:
This affects all units, but some users doesn't even know what we are talking about.
Tested in 3 different models, same results.
Click to expand...
Click to collapse
Thanks. That's what I was thinking about. No need to send for replacement since the same is with all units. Not a big problem for me since I like to use 120hz even if it drains more battery.
I got the same issue. It seems to be a software issue, because it only happens in always on display. If I open a black image the screen comes completely black. Weird bug.
There is a setting for variable current verses pulse modulation for brightness, I can't recall what they call it. Try using the variable current setting.
ivan290 said:
I got the same issue. It seems to be a software issue, because it only happens in always on display. If I open a black image the screen comes completely black. Weird bug.
Click to expand...
Click to collapse
Try to turn off Auto brightness in AOD settings, that fixed it for me.
froki said:
Try to turn off Auto brightness in AOD settings, that fixed it for me.
Click to expand...
Click to collapse
I have auto brightness in AOD disabled (and the normal auto brightness too) but the bug is still there. I configured it to max brightness so I notice it a little less
I am using the samsung galaxy A 52s 5g.
It has the exact same issue, the AOD and lockscreen behave like a LCD panel with a yellowish tint when the refresh rate is set on 60Hz.
Though everything else is fine, other screens and apps.
If set at 120Hz then AOD and lockscreen behave normally.
I don't what this is.. maybe samsung did not optimise their 60Hz setting properly.
prc001 said:
I am using the samsung galaxy A 52s 5g.
It has the exact same issue, the AOD and lockscreen behave like a LCD panel with a yellowish tint when the refresh rate is set on 60Hz.
Though everything else is fine, other screens and apps.
If set at 120Hz then AOD and lockscreen behave normally.
I don't what this is.. maybe samsung did not optimise their 60Hz setting properly.
Click to expand...
Click to collapse
There are color calibration/display issues on all the variable rate AMOLED displays it seems to some degree.
Lol, set to 120hz and be happy.
Who the hell buy 120hz phone and using 60hz

Question Picture in Picture, Split Screen etc - Refresh Rate drops to 60Hz (EXYNOS)

Hi there, I'd not noticed this before the Android 12 update, but refresh rate appears to drop from 120Hz to 60Hz when using Picture in Picture or Split Screen views. Can anyone else reproduce this please?
You can confirm this by going into developer mode and toggling to always display the refresh rate.
Try a factory reset if you haven't already and it was a OTA upgrade...
I'd rather see if others can reproduce this first - would have thought it's a simple enough thing to test and post your results here, thanks!
Hi SSJ100, I just tested this to confirm for you, it does drop to 60hz immediately and I cannot prompt it to 120hz until I return to full screen view
Further testing, if i have video running in the background, Amazon, netflix or YouTube it stays at 120 with windowed mode on
DS1000RR said:
Hi SSJ100, I just tested this to confirm for you, it does drop to 60hz immediately and I cannot prompt it to 120hz until I return to full screen view
Click to expand...
Click to collapse
Thanks for checking! Again though, I'm quite amazed (okay, maybe not quite the word hehe) at how no one has reported this issue in this forum (and at least one other "major" forum). If they have, please excuse my ignorance and I'd appreciate a link to the thread.
I can also confirm that this issue persists even after updating to the so-called bug fixing patch "BUKG".
DS1000RR said:
Further testing, if i have video running in the background, Amazon, netflix or YouTube it stays at 120 with windowed mode on
Click to expand...
Click to collapse
Interesting how bugs like this manifest sometimes huh hehe. I first noticed this issue with Google Maps when I was navigating with it and switching to another app (which automatically forces Google Maps app to become picture in picture mode). Scrolling looks quite different and jittery - it's amazing how one gets used to 120Hz!
Have you tried the tiles app developed by a user on here? It can force refresh rates very easily and just requires an adb permission.....there was a thread the other day
ssj100 said:
Scrolling looks quite different and jittery - it's amazing how one gets used to 120Hz!
Click to expand...
Click to collapse
There is some black magic going on with these 120Hz panels. 60 Hz never seemed to be a problem before these high refresh rate displays started popping up. I remember smooth as butter 60Hz phones (both iphones and android). But now when i use a 120Hz panel at a 60Hz refresh rate, it feels like something inside the phone is in it's death throes, coughing and spluttering - the stutter is jarring! But if I use my wife's OnePlus 6 (which has a fixed 60Hz screen), it doesn't feel so bad. It's definitely not as smooth as 120Hz but the 60Hz on a 60Hz panel feels smoother than 60Hz on a 120Hz panel. Is it only me or has anyone else had a similar experience?
I have the same issue as well..so pissed..using latest BUKG
I'm on Android 11, One UI 3 still, and when my phone displays split screen apps the refresh rate drops from 120 down to 60.
This must be some battery saving feature, because If I toggle performance mode (processing speed) from the drop down quick menu, the fps shoots back up to 120 in split screen.
So an easy fix if you need 120 in split screen.
Gasman said:
I'm on Android 11, One UI 3 still, and when my phone displays split screen apps the refresh rate drops from 120 down to 60.
This must be some battery saving feature, because If I toggle performance mode (processing speed) from the drop down quick menu, the fps shoots back up to 120 in split screen.
So an easy fix if you need 120 in split screen.
Click to expand...
Click to collapse
Yes, that seems to "fix" it for split screen. However, it doesn't resolve picture in picture fps drop to 60Hz.
Hmm must be an Android 12 thing. I'm sat here typing this with YouTube playing pip and the screen is holding 120fps even with my finger removed from the screen.
I did try Android 12 when the public version was released, but didn't like it, so downgraded back to the last version of 11, with a clean wipe.
Ok something odd going off, my screen seems to be stuck at 120!
Forcing it back to 60 in display options, works. Putting it back to adaptive, keeps the screen at 120. Even on the lock screen, and AOD!
I might try a reboot.
Gasman said:
Ok something odd going off, my screen seems to be stuck at 120!
Forcing it back to 60 in display options, works. Putting it back to adaptive, keeps the screen at 120. Even on the lock screen, and AOD!
I might try a reboot.
Click to expand...
Click to collapse
If you're in low ambient light, screen at low brightness, panel will be locked at 120Hz even with adaptive selected. Move to bright area or increase screen brightness and check if you are able to get to 60Hz
Gasman said:
Hmm must be an Android 12 thing. I'm sat here typing this with YouTube playing pip and the screen is holding 120fps even with my finger removed from the screen.
I did try Android 12 when the public version was released, but didn't like it, so downgraded back to the last version of 11, with a clean wipe.
Click to expand...
Click to collapse
Yes, I've only noticed this issue since Android 12 with the picture-in-picture scenario. Hopefully Samsung fixes this soon.
Gasman said:
Ok something odd going off, my screen seems to be stuck at 120!
Forcing it back to 60 in display options, works. Putting it back to adaptive, keeps the screen at 120. Even on the lock screen, and AOD!
I might try a reboot.
Click to expand...
Click to collapse
Nothing odd there - as previous poster mentioned, it's always behaved that way when the ambient lighting is low enough. And yes, has always been that way for AOD too. I never understood why 120Hz is required particularly for that!
I think that after android 12, my unlock animation is rendered at 60hz because it is sometimes sluggish. Did a full factory reset and i have the last update. Do you guys experience the same? other than that the phone is perfectly smooth
Still the same issue with BULC December update. Somewhat disappointing, as you'd think this should be quite an easy fix.
Still same issue after BULG update with PIP. As a previous person has noted, split-screen mode appears to be auto-throttled to 60Hz by default, and the only way to change this so it remains at 120Hz is by toggling "High" or "Maximum" "Processing speed".

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