Database Users

[Q] Yellow Tint & Brightness issues (again!) - Why??

I know there are other threads that discuss this topic (somewhat) but I wanted to post this separately because what I'm asking is very specific.
I've had about 8 separate Nexus devices from Google Play in the UK and every one of them has had the same issue:
The display has had a noticeably yellow but admittedly slight (possibly slightly brighter) tint on the bottom and left edges, while the right edge has been dull/dark.
This is specific because there are other and numerous reports of a yellow "tint" across the whole screen. This is not the whole screen, this is very clearly just the bottom third and left edge of the screen.
Some think that this is a "glue" issue that will resolve itself. Some think it won't get better. Some think that it's an issue they can live with. Some can't stand the lack of uniformity.
Well I can't stand the lack of uniformity because in my opinion, on a 4.7 inch screen, I find it distracting to be reading text on a solid background or white and the "white" or background colour changes as I read right to left or top to bottom. I consider a decent amount of uniformity to be a minimum requirement for devices which will be used in the way most of us use our phones and tablets. Manufacturers, seemingly, don't care at all except in the most extreme of cases. It looks like they are churning out whatever they can get away with. In all other aspects, the N4's screen is fantastic.
There's nothing anyone here can really do to help directly but it leads me to a question I haven't been able to find the answer to anywhere by Googling or searching other forums:
What is the cause of this lack of uniformity on these LCD panels? It seems to be LCD specific. As mentioned, some think it's "glue" but then others say not and in my experience the tint issues haven't gotten any better in the time I've had the devices that have passed through my hands.
I don't think it's the LED backlighting but could it be something to do with that?
Does anyone know, from a technical point of view why LCD panels are so prone to this issue with the yellow tints across *part* of the display. It's a very widespread thing as it's been noted on most of the iPhone range and a lot of other handsets too. Is there something inherently difficult for panel manufacturers (in the N4's case, LG) to do to make the panel evenly toned and lit? Surely it can't be that hard at this stage in the development of LCD tech once the manufacturing process is "calibrated" at the factory and underway? I assume these handsets are assembled by robots, not by hand. Is that right? Why is it so widespread? Is it a cost issue? Would I have a better chance of a quality panel by buying a more expensive handset? (Although I've seen many HTC One X's with the same problem - I did see one which was almost literally "perfect" in uniformity and brightness). I'd really appreciate any feedback on this. I know that because it's the "norm", sadly, the common response is to now "accept" the panels and handsets that are out there. There doesn't even seem to be a "higher end" manufacturer where high quality uniformity is more likely - or is there?
Anyone with a good/strong knowledge of LCD tech or the manufacturing process out there that can explain this?
Thanks!
***UPDATE***
I've now attached an illustration to show what I mean. ***It's exaggerated a bit*** to show the effect but illustrates the problem clearly.

Have you tried using a custom kernel to tweak the colors of the screen? The Nexus 4 is known for it's washed out colors so using a custom kernel like Trinity or Franco kernel allows you to tweak the color of the screen to your desire. Of course you will need an application to tweak the colors.

LG is known for light bleeding and or panel uniformity issues, I had to swap 4 LG tvs before I decided to go with Panasonic , my LG ips monitor that im typing on right now for my pc has light bleeding in some areas which results in low contrast. I saw about 13 different optimus g devices before I got the nexus 4 and the screens are beautiful with good contrast, punchy colors and good black levels with no light bleeding or weird tints while my nexus 4 has slight light bleeding right where the signal bar is located. I love this phone and its seems to get the " perfect " one you maybe have to swap a few times and to me the price kind of fits the quality of the phone but then I almost have enough spare cash to buy another one lol can't complain about that.

demorik said:
LG is known for light bleeding and or panel uniformity issues, I had to swap 4 LG tvs before I decided to go with Panasonic , my LG ips monitor that im typing on right now for my pc has light bleeding in some areas which results in low contrast. I saw about 13 different optimus g devices before I got the nexus 4 and the screens are beautiful with good contrast, punchy colors and good black levels with no light bleeding or weird tints while my nexus 4 has slight light bleeding right where the signal bar is located. I love this phone and its seems to get the " perfect " one you maybe have to swap a few times and to me the price kind of fits the quality of the phone but then I almost have enough spare cash to buy another one lol can't complain about that.
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Click to collapse
Thanks for the reply. I've heard elsewhere that LG specifically seems to have poor quality panel uniformity. I think LG panels are used by Apple who have had many, many reports of panel yellow "tint" issues on both their iPhone and iMac range. It seems to affect screens big or small. Having said that, HTC had similar problems and their panels were manufactured by Sony. I would *love* to know what's causing this or what is the reason for the yellow "tint" issue on part of the screen.

scream4cheese said:
Have you tried using a custom kernel to tweak the colors of the screen? The Nexus 4 is known for it's washed out colors so using a custom kernel like Trinity or Franco kernel allows you to tweak the color of the screen to your desire. Of course you will need an application to tweak the colors.
Click to expand...
Click to collapse
I have done all of that and with some success with all of the handsets I've had but because the tint affects only part of the screen in a sort of gradient - the calibration cannot fix it.
I'd much prefer a screen that had a yellow "tint" evenly across the whole screen then of course I could calibrate accordingly.

alsheron said:
I've had about 8 separate Nexus devices from Google Play in the UK and every one of them has had the same issue:
Click to expand...
Click to collapse
You've had 8 different Nexus 4's?

yellow patches is from the glue used in the optical lamination process, yellow tint is from the display calibration which is often used to reduce banding and gives more saturated/warm look to colors
if your device is affected by by visible yellow patches the only cure is to re-calibrate the display to reduce the effect and don't get the device too hot as it may increase it

DynamicRam said:
yellow patches is from the glue used in the optical lamination process
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Click to collapse
Not that I don't believe you, but could you link me to the source of this theory?

DynamicRam said:
yellow patches is from the glue used in the optical lamination process, yellow tint is from the display calibration which is often used to reduce banding and gives more saturated/warm look to colors
if your device is affected by by visible yellow patches the only cure is to re-calibrate the display to reduce the effect and don't get the device too hot as it may increase it
Click to expand...
Click to collapse
Sorry but this is not what my OP is about. I do not have a uniform tint and therefore it cannot be to do with "calibration" of some sort unless I am mistaken. Neither do I have "patches" or "spots". This is very specifically about a gradient yellow "tint" that only affects part of the screen and trying to find out the technical reason(s) for its prevalence in a wide range of LCD screens used in mobile phones and of course the Nexus 4 in particular. I've updated my original post to include an illustration of the effect I'm asking about. Thanks!

I am pretty sure its a hardware fault and i assumed you tried to return it otherwise there is nothing else you can do so i suggested calibration to reduce the effect

I had the same issue, then flashed custom ROM and it was fixed. Go figure :silly:

stevenhw8 said:
I had the same issue, then flashed custom ROM and it was fixed. Go figure :silly:
Click to expand...
Click to collapse
hi stevenhw8, can U give me name and link to download your custom ROM? thank you.

Is this the pink hue that everyone is talking about?

Here is a photo. Nexus 6p on the left. LG G4 on the right. http://imgur.com/GfRnA91
While it isn't a huge issue for me, I'd rather have the whites that the LG G4 is showing. The difference isn't as apparent as the photo makes it out to be.
Basically, is this what my screen is supposed to look like or not?

I don't know about everyone else, but as long as the color is uniform across the entire display that is merely a "color temperature" issue.
You run into the same problems picking LED lightbulbs for a house. As long as the color temperature is the same and uniform, nobody notices.
But as soon as two lightbulbs have different color temperatures, everyone loses their ****.
So as long as your display is uniform, I'd say leave it be.
And for the record, cameras do a very poor job of capturing this kind of detail.
Use your eyes, you don't have to "prove" anything to anyone, we believe you.

mine has it too, next to my old note 3 you could see the pink hue, but it also made me notice a yellow hue on the note 3. anyways used elementalX kernel and turned down the red and whites are nice and white now

ChristianBale said:
Here is a photo. Nexus 6p on the left. LG G4 on the right. http://imgur.com/GfRnA91
While it isn't a huge issue for me, I'd rather have the whites that the LG G4 is showing. The difference isn't as apparent as the photo makes it out to be.
Basically, is this what my screen is supposed to look like or not?
Click to expand...
Click to collapse
Consider yourself lucky since it's uniform. Mine is an area the width of my thumb running down the right edge. It's pink and the rest of my screen is fine. I wish it was uniformed because I could just use a calibration app and change the color temperature and be happy. Even if I change the temp it'll still have that area slightly different than the rest of my screen
Sent from my Nexus 6P using Tapatalk

Mod Edit
Thread Closed.
Use existing thread here .
jackeagle
Forum Moderator

Fix uneven/yellow screen with intentional burn-in

So I was on my 2nd Nexus 6P and like the first it had an uneven screen. Normal/slightly pink at the top and at the bottom it's more yellow. Instead of returning it I've decided to try and fix the yellow tint by intentionally causing a burn-in on the over-enthusiastic green pixels in the bottom half of my screen.
To do this I flashed a kernel which unlocks the high-brightness mode of the display, the awesome EX kernel, set my screen timeout to 15 minutes and left the display turned on for 3x15 minutes in high brightness mode with a black-to-green gradient open full screen in the Photos app (absolutely nothing else on screen). After each of the 15 minutes I checked the progress, after the 3rd time I considered it done. I'm happy to report that this has nearly eliminated my uneven screen problem.
So far I've seen no ill effects, just a nice even screen.
I used this black-to-green gradient that was a close match to where my screen was yellow. My first 6P had a different pattern of yellowness, so that would have required a different gradient, more like black-green-black.

Interesting, the normal slightly pink at the top transitioning to yellow at the bottom describes the screen on my original nexus 6P and it's replacement.
I'll look into giving this a try as well.

I´m not sure if something like this could be considered as a defect. If you look at a very high angle, you might see some sort of "rainbow effect" on the screen. You should be careful about "burning in" Pixels in a Amoled screen. High brightness will wear out the LEDs faster than you think. At least this is how I remember my old Samsung Galaxy S3 but maybe Amoled technology has improved a lot.

Gorgtech said:
I´m not sure if something like this could be considered as a defect. If you look at a very high angle, you might see some sort of "rainbow effect" on the screen. You should be careful about "burning in" Pixels in a Amoled screen. High brightness will wear out the LEDs faster than you think. At least this is how I remember my old Samsung Galaxy S3 but maybe Amoled technology has improved a lot.
Click to expand...
Click to collapse
I can't really comment on if the OP's method is safe or not, but it is worth noting that the gradient/tint change is noticeable even when viewed straight on under normal use, such as browsing etc.
It could sort of be likened to the old TN based flat screens from a number of years ago where the top and bottom looked slightly different colours, however a lot of this was down to narrow viewing angles. I'm wondering if the same applies to the specific AMOLED display used by the 6P as well.
The AMOLED screens on my Moto X 2nd Gen and Moto X Force don't have the same problem.

I have a slight purple tint too on the screen but it is only visible on a white background. It does not bother me, if you set a higher brightness it is barely visible. Maybe all Nexus 6P have this sort of display and you simply have to live with it.
Azarin said:
I can't really comment on if the OP's method is safe or not, but it is worth noting that the gradient/tint change is noticeable even when viewed straight on under normal use, such as browsing etc.
It could sort of be likened to the old TN based flat screens from a number of years ago where the top and bottom looked slightly different colours, however a lot of this was down to narrow viewing angles. I'm wondering if the same applies to the specific AMOLED display used by the 6P as well.
The AMOLED screens on my Moto X 2nd Gen and Moto X Force don't have the same problem.
Click to expand...
Click to collapse

Would you happen to have a before image for your screen? I would like to try this on my phone but can't say for sure what exact color the uneven section is. Most of the screen seems to have a pink tint that fades into a green/yellow tint in the bottom left corner. I don't want to stress the wrong color accidentally.

Can you post before and after pics of your screen please?

Gorgtech said:
I have a slight purple tint too on the screen but it is only visible on a white background. It does not bother me, if you set a higher brightness it is barely visible. Maybe all Nexus 6P have this sort of display and you simply have to live with it.
Click to expand...
Click to collapse
Its a well known characteristic of samsung AMOLED screens. Samsung users have been complaining about this for some time. Its actually worse on the sgs6. But more brightness will make it less noticeable. Honestly, if you forget about it and stop focusing on it, you will stop noticing it.

Yeah I understand some are really bad you should send it back.but if its slight. There's no.point obsessing about it. It takes the joy away from using the phone

android4life92 said:
Yeah I understand some are really bad you should send it back.but if its slight. There's no.point obsessing about it. It takes the joy away from using the phone
Click to expand...
Click to collapse
It's impossible not obsessing about it since the display is very thing you look at when using a phone, people wouldnt tolerate if it was an LCD, dead pixels or any other defect at the advertised price, but since it's amoled we should be expected that these errors occur.
The issue on slight displays is that the screen is uneven on white, so its impossible to ignore on web browsing and how dark ui and gapps is not provided by Google, I would prefer it to be slightly pink/blue all over not half so you won't notice it.
Not meaning to rant and whine but consumers shouldn't have to accept this or fix the issue themselves, when I show the phone of friends, they notice the inconsistent white background and are shocked when I say its something you have to live with, the features are not going to outweigh the display issue
The joy of the phone is still there, just wish they implement quality control.

I complained about this on my Nexus 6. Ended up buying and returning a total of about 8 phones from various stores until i found the "perfect" one. Its incredibly irritating when you can notice it and its the first thing you see when the pixels light up. Some people may care more than others but im not willing to compromise anymore. AMOLED displays look great, but LCDs seem to have a better yield or QA. I was of course down voted and flamed about this. Good to see people starting to take action against garbage quality AMOLEDs.

ariekanarienl said:
So I was on my 2nd Nexus 6P and like the first it had an uneven screen. Normal/slightly pink at the top and at the bottom it's more yellow. Instead of returning it I've decided to try and fix the yellow tint by intentionally causing a burn-in on the over-enthusiastic green pixels in the bottom half of my screen.
To do this I flashed a kernel which unlocks the high-brightness mode of the display, the awesome EX kernel, set my screen timeout to 15 minutes and left the display turned on for 3x15 minutes in high brightness mode with a black-to-green gradient open full screen in the Photos app (absolutely nothing else on screen). After each of the 15 minutes I checked the progress, after the 3rd time I considered it done. I'm happy to report that this has nearly eliminated my uneven screen problem.
So far I've seen no ill effects, just a nice even screen.
I used this black-to-green gradient that was a close match to where my screen was yellow. My first 6P had a different pattern of yellowness, so that would have required a different gradient, more like black-green-black.
Click to expand...
Click to collapse
This post is old but I wanted to try this nonetheless. You can't just burn in or wear out the pixels in such sort of time no matter what. 45 mis is not enough to cause such an effect. I tried it as I have a screen with the same exactly issue but there is no change. And I did it for far more than you. I let it all the night long for 3 days. There was no change. I don't think you can fix this issue this way (or any other way)

You guys keep saying "AMOLED issue". I bought 6p after having OnePlus X - it has AMOLED without any issue, it was perfect screen! Nexus 6p is great phone, but screen really bothers me... I hate, but I need to replace the phone. And I am not sure whether I will get a good phone or not. Support told me that if I would ask for replacement - they could send me a refurbished phone. Only buying new will give a new phone. I can still return it as I have it for few days...

mariojas89 said:
You guys keep saying "AMOLED issue". I bought 6p after having OnePlus X - it has AMOLED without any issue, it was perfect screen! Nexus 6p is great phone, but screen really bothers me... I hate, but I need to replace the phone. And I am not sure whether I will get a good phone or not. Support told me that if I would ask for replacement - they could send me a refurbished phone. Only buying new will give a new phone. I can still return it as I have it for few days...
Click to expand...
Click to collapse
Hey,
Seriously, a refurbished device just after a few days? Like you had it for 10 months, lol? Is it Huawei?
Escalate the case to a supervisor and don't give up until you get a "proper" new phone!
Good luck...

Droid Turbo Stolen (More Info Inside)

So basically, I was in Israel for a month, and of course I had my Turbo with me, along with an Israeli SIM card. To avoid repeating myself, I'll refer you to the post I made in a local Facebook group. Unfortunately, this was actually the first time I brought anything other than a key to the beach with me (1/30 days), and whether it's a coincidence that I was robbed that day, or the fact that the culprits watched me stash it, I'll never know.
Unless the police recover my Turbo, this is goodbye to the subforum. (I just ordered a Nexus 6P)
I appreciate all the work that certain users have put in to make our experience the best possible.
Side note: I actually had multiple completely random people give me money after I asked directions to the police station on the street, so I only have the best to say about Israelis in general. Also, if you think you can help me find the phone, let me know.

maxtheax said:
Also, if you think you can help me find the phone, let me know.
Click to expand...
Click to collapse
Android Device Manager (part of google play) lets you locate your phone, lock your phone, ring your phone.
https://accounts.google.com/Service...droid/devicemanager?sid=yfZzzA&u=0&authuser=0
Unless they've already wiped it.
OK, just read your Facebook post. You already know that. In fact, sounds like you have the same type app I have installed. Good for you. Hope you recover it.

ChazzMatt said:
Android Device Manager (part of google play) lets you locate your phone, lock your phone, ring your phone.
https://accounts.google.com/Service...droid/devicemanager?sid=yfZzzA&u=0&authuser=0
Unless they've already wiped it.
OK, just read your Facebook post. You already know that. In fact, sounds like you have the same type app I have installed. Good for you. Hope you recover it.
Click to expand...
Click to collapse
Is there any method or application which we come to know that newly purchased turbo has genuine Led display.
Actually I bought a used Turbo and when I compared it at full brightness with my Maxx and another Turbo I felt that it is more yellowish in comparison to both of these. I I'm suspecious that the genuine Led unit has been replaced.

Nido221 said:
Is there any method or application which we come to know that newly purchased turbo has genuine Led display.
Actually I bought a used Turbo and when I compared it at full brightness with my Maxx and another Turbo I felt that it is more yellowish in comparison to both of these. I I'm suspecious that the genuine Led unit has been replaced.
Click to expand...
Click to collapse
When you use the Display Tester app, does it show 1440p? There's not that many 5.2" 1440p AMOLED displays out there, that I'm aware of...
Display Tester
https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en

ChazzMatt said:
When you use the Display Tester app, does it show 1440p? There's not that many 5.2" 1440p AMOLED displays out there, that I'm aware of...
Display Tester
https://play.google.com/store/apps/details?id=com.gombosdev.displaytester&hl=en
Click to expand...
Click to collapse
Thanks for your reply however I used the app and found the following parameters(screen shot).

Nido221 said:
Thanks for your reply however I used the app and found the following parameters(screen shot).
Click to expand...
Click to collapse
Are you running a custom ROM, even ComputerFreak's perhaps?
Says you have "soft keys" And I don't. Also your measurements are slightly different.

ChazzMatt said:
Are you running a custom ROM, even ComputerFreak's perhaps?
Says you have "soft keys" And I don't. Also your measurements are slightly different.
Click to expand...
Click to collapse
No sir, I'm at stock 5.1.
Actually after applying glass protector for led I felt it sometimes less sensitive the Touch Keys of my Turbo(and this makes me more suspecious about Led replacement).
So I I'm using "Handy Soft Keys" software instead of hardware touch keys.
Which measurements are different and what do you guess from these differed measurements ???

ChazzMatt said:
Are you running a custom ROM, even ComputerFreak's perhaps?
Says you have "soft keys" And I don't. Also your measurements are slightly different.
Click to expand...
Click to collapse
I made the same comparison with my friends 's Moto x2
And the result was same. Turbo display is more in yellow colour. It seems that the genuine Led had been replaced with LCD. Is it possible although the pixel density shows more than 565?? Also when I used the "Branding, contrast, saturation test" I noticed that my Maxx has background textured type display whereas Turbo has plain display.

Nido221 said:
Is it possible although the pixel density shows more than 565??
Click to expand...
Click to collapse
Stock PPI is 565. That can't change. It's hardware related.
Stock DPI is 640. That's software related and can be changed. Some custom ROMs like Resurrection Remix go smaller, to fit more stuff onto the screen.
Here's mine:
Since I don't have soft keys, only the capacitive keys, my screen size doesn't show full 5.2" since some of the screen is being used for the keys and not for display. At least that's my reasoning.

It's possible that the yellow tinted unit or the other unit has experienced some type of burn in.

Latiken said:
It's possible that the yellow tinted unit or the other unit has experienced some type of burn in.
Click to expand...
Click to collapse
What type of burn?
Is it possible that an led display is burnt out and it still give display?

u say u think it has been replaced with an lcd instead of an amoled (highly unlikely). however that is the easiest thing to check. go to a dark room, make a wave gesture over the phone to bring up active display and check to see if only time info lights up and the rest is completely black, or if the black emits light (i.e it is grayish). if it is completely black it's an amoled if not it is an lcd. make sure the room is dark (your bedroon at night for example with shutters off etc). keep in mind that no two screens are alike. maybe it is the original but a different batch. i had that on a moto x where the screen was yellow tinted (brand new sealed from store), got it replaced and the next one was much better. also dont expect to ever see true white on an amoled screen (take ur maxx beside a good lcd and compare whites and you will understand what i am talking about)

jimakos29 said:
u say u think it has been replaced with an lcd instead of an amoled (highly unlikely). however that is the easiest thing to check. go to a dark room, make a wave gesture over the phone to bring up active display and check to see if only time info lights up and the rest is completely black, or if the black emits light (i.e it is grayish). if it is completely black it's an amoled if not it is an lcd. make sure the room is dark (your bedroon at night for example with shutters off etc). keep in mind that no two screens are alike. maybe it is the original but a different batch. i had that on a moto x where the screen was yellow tinted (brand new sealed from store), got it replaced and the next one was much better. also dont expect to ever see true white on an amoled screen (take ur maxx beside a good lcd and compare whites and you will understand what i am talking about)
Click to expand...
Click to collapse
First of all thank you for your help.
Now at first, I checked in the dark room and found that it is an LED not the LCD.
Second.... Yes it is possible that it may be from different badge but it is also possible that this badge belongs to low quality display as none of the three mobiles(Moto x2,Droid Maxx& another Turbo)resembles to this display and it is prominently visible when compared to those.
Third... I know that Motorola's display is a little bit yellowish green when compared to Samsung etc.
Note: I also noted that it's viewing angles are less than another Turbo...

uneven screen backlight...anyone?

Hi guys,
Anyone else notice any uneven screen backlighting? I read forums on the v20, and when reading back text on white background - while scrolling down to read more text I notice dark shades on the screen. I downloaded screen test and lo and behold...dark patch on my screen! I then sent it back to LG and assured me that they replaced the screen module and tested it and all 'voltage' was normal - BUT, dark shades were still present albeit in a different spot!
Can someone here please confirm if this is a normal thing for LG screen as I realise it is LCD backlit and not OLED hence a few bleeding / inconsistency of backlight would be present. Even though I have never experienced this on ANY of my HTC's which were all LCD screens.
cheers guys! sorry for the long post!

Yes, i have it too! H910 variant. Two dark/dim spots that run horizontal from edge to edge. Can be more noticeable/annoying in landscape view than portrait actually.
Exchanged one brand new H910 for another. Same problem. Both manufactured 12/16. Havent had this on any other LG Ive owned (RS988 G5, D850 G3, P930 Nitro HD) or Moto for that matter. Pretty bummed to have this in an $830 USD device.
Edit...seems like the issue can be excaberated by different viewing angles. Also, totally anecdotal, but i looked at my display at a stoplight (wearing polarized shades) and i noticed the screen looked unaffected by the shades compared to other LCDs (cars TFT nav screen, an eIPS tablet, etc) that i have in the car. Wonder if what we are seeing is some type of side effect from a polarizing filter, or maybe lack of, used with this display/panel?
Or, maybe these things are edge-lit and LG used an uneven arrangement of emitters. Not really sure.

Good call...I do think it may be the backlight being edge lit! which could only mean (maybe) the backlight has failed at some spots or LG engineers mis-formulated where to put the lighting. it is very sad to hear that this may not be an isolated problem.
I did however sent it back for repair and the technician advice of a NEW LCD module/screen fitted. was sent back to me the same day!! WOW! BUT...same problem but it a different spot.
If this keeps going I may have to consider a new device altogether!
Then im starting to hear crackling on both earpiece and speakers....but thats a different thread!
arrgg...

I began to notice this on my v20 that I bought at the end of December, at first I thought it was just viewing angle or I messed up the screen. However my mom just got a v20 and hers' has the exact same problem in nearly the same spot. I should add that my phone is an LS997 that is completely stock. Also @D0NZ which screen test application did you use to see the problem better?

I used an app called full screen test...its free and simple. I then took a photo of it with my old htc m8 then sent it to lg for review.

The V10s have this as well. Something to do with the backlight and 2nd screen. Kind of got used to it on my V10. Was hoping that would have been addressed with the build of the V20.
Sent from my LG-H901 using Tapatalk

But I still have that unwanted effect even if the second screen is off?

D0NZ said:
But I still have that unwanted effect even if the second screen is off?
Click to expand...
Click to collapse
I think so. On the V10 it was really noticeable when the main screen went into immersive mode and the 2nd screen went off.
Sent from my HTC M8 using Tapatalk

this to me is a deal breaker! I read a lot on my phone, tis why I got a large screen! If this is the 'norm' for a flagship...
I pretty much think its unacceptable. They produce their own screens and cant get a flagship right? hmm...which phone to replace it with now that is available locally (for me that is down under)

So here are some pics I sent LG originally!

D0NZ said:
So here are some pics I sent LG originally!
Click to expand...
Click to collapse
Looking at your grey screen, those bands/dim areas are in the exact same locations on my device (and my prior V20)! It must be inherent to this panel. You said the bands/dim locations changed after LG swapped screens/devices for you though?
Either way, it is a bummer. I'm still undecided if I should return mine as well, or just live with it. Almost every recent device has some quirk to live with it seems. I recently traded a Samsung Galaxy S7 that had a beautiful AMOLED display, but the device picked up scratches (on the display *and* body) like I've never seen before. I even took a look over at the dark side (Apple), and they seem to be catching flak for overheating and camera problems in some iPhone 7 devices. Sigh.

I have it on one corner pretty bad, is this because of the IPS screen and how the frame of the phone is pressing on it?

myiphonebroke said:
I have it on one corner pretty bad, is this because of the IPS screen and how the frame of the phone is pressing on it?
Click to expand...
Click to collapse
I think its to do with backlight distribution tbh. Ive had a number of HTC's and NONE of them had backlight distribution issues. Im now wondering IF a 3rd party screen module would be better than the original LG produced? OR...if this is an isolated issue only on some devices. My device was manufactured Nov 2016. Maybe a later produced model has better screens? Anyone with a newer produced V20 care to share?

I think its the placement of the 2nd screen backlight. Ill try to find the thread. Someone with a V10 explained it last year.
Sent from my LG-H918 using Tapatalk

Here is the post I remember from the V10 forums that seem to make the most sense regarding backlight being uneven.
https://forum.xda-developers.com/showpost.php?p=64236798&postcount=45

Both my replacement V20 and original V20 have uneven screen backlighting (at least the replacement has a better back cover mechanism). There is a dark spot in the middle of the status bar on white (or lighter) screens. What is weirder is that it is the exact same pattern and location as the first one. It is present in both stock and LOS. I suppose I'll just wait around a year and warranty it out then because I just want to start using the phone. I included an image for people that were curious how it looked.

^
I think I can live with that...as in...the dim sections are on the edge of the screen. Mine was in the middle of the screen which i cannot stand!
I have sent the replaced screen NOT to LG but to the place where I bought it.
They said that the repairer that LG told me to send it to was the last on their system as 'reliable'. The store said that they will deal with the repairer and LG. I kind of hope the worst happens and they just offer me a refund or a total replacement - but I doubt that would happen!

UPDATE: so i sent it back to jb hifi, on the report, they can replicate the issue. On the repairers report - they couldnt
SO i get it back with all the 'test' that they have done on it being to manufacturer's specs.
Which i think now...was never good to begin with
Too bad i cant unsee what i can see...sux...I wonder if AMOLEDs have these issues? Anyone care to elaborate?

I have this issue with my LG V20 -- only when viewing photos
I have this issue with my LG V20 -- only when viewing photos - see photos -- screen has two long bright lines.
See attached photos - lines are not on the photos themselves --it is just in the backlighting -- and the lines are not there when viewing websites or if testing the screen with an test app. Please cut ans paste links to see photos - remove blank area after http -- I can't post links till I have 10 posts on this site - if any kind poster could repost so others can see them that would be great!
http ://oi64.tinypic.com/24q96aa.jpg
...and these lines stay the same even when you enlarge the photo...
http ://oi68.tinypic.com/331oj0n.jpg

I have the same issue below secondary screen. Only noticeable on white background. Doesn't ruin reading books, it's there, but minor. I have dual sim variant. I'd be very upset if I paid launching price. All those things you only find out when you get the device.