Develop Bugs

[Q] Yellowish tint near bottom of the screen

I just picked up a 2013 Nexus 7 this weekend as an upgrade for my 2012 model. Seems like a solid upgrade so far but I'm bothered by one item and it's the yellowish gradient toward the bottom one or two inches of the screen. I need to tilt the device maybe 15 degrees away from me to get a more consistent color. If I rotate the device 90 degrees counter-clockwise (camera now on the left), I can still see the yellowish darkening on light screens on the right. My 2012 model has consistent color throughout. I found a number of posts regarding people complaining of about a warmer color to the 2013 screen but haven't seen anything describing the gradient I see. It's rather annoying when reading webpages or ebooks with a light background.
Anyone else see this on their Nexus? Did it improve with time?
I tried to take a couple of photos but my camera doesn't seem to be doing a good job of picking up the colors.

Common issue
I returned mine (because of it) and got a new one which had exactly the same thing.
I also checked out a friend's N7 and had the same thing.
So I guess it is a normal thing. It is hardly noticeable and only on white background.
(Most panels have some kind of uniformity issues. I checked an iPad 3 and had some other issues...)

antypas said:
I returned mine (because of it) and got a new one which had exactly the same thing.
I also checked out a friend's N7 and had the same thing.
So I guess it is a normal thing. It is hardly noticeable and only on white background.
(Most panels have some kind of uniformity issues. I checked an iPad 3 and had some other issues...)
Click to expand...
Click to collapse
Thanks for the feedback. This is actually driving me nuts and I'm going to take it back to see if I can get one with at least less of the effect. Mine seems to be worse than the display model in the store I saw today. If they can't give me something that's equivalent in color consistency to my 2012 Nexus 7 then I'll return it and just stick with that.

If I were you I wouldn't bother.
In the store there are other ambient factors that may trick you in believing the store's sample is batter. But it will not.
3 samples I checked are exactly the same...

My device have yellow tint to. How to fix? "Screen adjuster" and other not helped for me.
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I don't believe that this is correctable with software. I ended up getting a different tablet altogether and even this 10" one has the same issue. Guessing these panels are all coming from the same manufacturer....

Does anyone has a pixel C without purple Blur when scrolling?

Hello I have received my third pixel c.
I had to RMA the forst two, because the on/off button was broken, and the second one becase the sensons wre not working as expècted.
The three devices had a thing in common, a terrible purple blur when srolling, for example white text over a black background. I've wrote in this forum and it semms thta are devices that do not have this issue. Now i'm not sure if there is any pixel c arround the world without this screen issue.
Attached two pictures from a médium quality screen (galaxy tab A, 200 €) and the pixel C (500€). The pictures has been taken from testufo.com/#test=stutter&demo=smooth&foreground=FFFFFF&background=000000&max=12&pps=1920, with an LG G3,
where the purple Blur is obvious.
Could anyone test the link provided above and tell me if you could see the white/gray line instead of a white/purple?
I dont know if i should RMA the third pixel C or this is something bad with this screen.
Pixel C
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Samsung Galaxy Tab A

The pixel c I ordered about 3 weeks ago had the same problem with the screen. I RMAed it and the replacement has the problem too. I've requested a replacement for that one too. My Nexus 10 is fine. The rep I talked with (John?) said he had not dealt with any other customer besides me that had the problem and assured me that it was indeed a defect. I'm not convinced...

I'm using the stutters and tearing test (I believe that's the one you're using, right?) and while the bars do look purple while moving, screenshots show that they are in fact white.

So I tried that test and I do see a very slight purple tint, I recorded the screen with the 240fps slo-mo mode on my Nexus 6P and I see it there too.
It's so slight that I honestly don't care if it's actually a problem or not. Everything else about this screen impresses me enough.

Thanks for answering. I have talked again with google and they are going to send me another one. As i could not test the device in the first 15 days they are not going to give my money back. Again they answer me also that this issue was new for them and has never been reported by any customer.
Could anybody post an photo showing that a pixel c screen without this defect exists?
The is also a test i am doing and is the vsynctester dot com. The VSYNC letters should be grey and this screen shows them as light pink.
Regards

brando56894 said:
[] look purple while moving, screenshots show that they are in fact white.
Click to expand...
Click to collapse
Because it's a screen related issue and not the gpu. You can only capture it, if you take a photo from the screen with another device

Termynat0r said:
Because it's a screen related issue and not the gpu. You can only capture it, if you take a photo from the screen with another device
Click to expand...
Click to collapse
Makes sense, then I guess mine has it too but I never notice it in daily usage. I just assumed it was an optical illusion.

Different Display-Panels/Quality?!

hey guys, i just receive two LG G4 (H815) from the amazon warehouse.
I have the feeling that one of the devices has a little brighter display with also a little better viewing angles (both tested at 100% brightness).
Is that possible?
Does LG build in diffrent panels or are my eyes fooled?

Not every display is equal even on the same phone. Especially if you compare Brightness. This is usually only noticed when compared side to side.
I would not worry about it unless you feel something is wrong with it.
Sometimes you may have maple vendors for the same part. In this case even though specs are the same they are not 100% equal.
Sent from my LG G4

check if both phones have the same firmware. cause for me MM is a bit dimmer than LP. I compare the both side by side. then I flashed LP on my Phone and now its the same.

both have the same firmware

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It's possible. LG has severe quality control issues. In favor of adding funny features at the lowest price among the smartphone giants, LG cuts corners on the wrong places. This can sometimes be the cheapest solder supplier, the cheapest BGA Station to assemble the PBC, the cheapest leather for the battery cover or as in this case the cheapest LCD panel they could get. Sometimes they get away with that. Sometimes they don't as we saw with the bootloop fiasco on the G4, caused by a "loose contact", probably on one of the mainboard components.
EDIT: I'd check the panel for burn-in or retention since reports of such issues on the G4 slowly pop-up all over the internet. I have it too, especially when the phone gets a little warmer or is used for a longer period of time.

You would never notice it if they where not beside each other. Take any phone you want and do the same. You will see some difference. The screens are not all made equal. The calibration process does not make them all 100% the same.
I worked for a major manufacturer. It was really interesting when you had 10 displays beside each other.
Sent from my LG G4

Is that a brightness difference, or just a temperature (color) difference, warmer and cooler?

I remeber back on the old g2 sometimes flashing roms and kernals you got a whote lines issue. Which stemmed back to two diffrent panel typed a jdi type and a lgd type. I had a jdi. Which i always got the white lines. I dont know if there was a diffrence in images the screen displayed. But i know then they did use 2 diffrent types

TheMadScientist420 said:
I remeber back on the old g2 sometimes flashing roms and kernals you got a whote lines issue. Which stemmed back to two diffrent panel typed a jdi type and a lgd type. I had a jdi. Which i always got the white lines. I dont know if there was a diffrence in images the screen displayed. But i know then they did use 2 diffrent types
Click to expand...
Click to collapse
As you said, the lg g2 have two different pannel types... and also the G4 have both same pannel manufactur. mine is LGE

http://forum.xda-developers.com/g4/general/lg-dual-sourcing-panels-g4-touchscreen-t3253471
Dont know how true it is but aparantly it has lgd or jdi too
---------- Post added at 10:29 PM ---------- Previous post was at 10:23 PM ----------
http://www.naldotech.com/check-lg-g3-display-manufacturer/

danieldp1990 said:
check if both phones have the same firmware. cause for me MM is a bit dimmer than LP. I compare the both side by side. then I flashed LP on my Phone and now its the same.
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Click to collapse
maybe it is dimmer because they have increased the contract in MM.. about my brother HTC M8 for example the screen is notably better in MM

LG G4 display burns?

Hello i would really like your opinion about something wierd with my phone.
I have a LG G4 and after a while that the screen is alight I get display burns of the parts the didnt change in the screen and have a bright color (such as the clock and battery status, it also happens in games that i play which have the buttons displayed in bright color).
It calms down after a few minutes that the screen is turned of or i force it to display something diffrent in the burned parts
I'm having a video attached so you can see what i mean (in the video i spoke some language, please ignore)
In the video the burned parts are at the top and top left (the "share" sign)
youtube.com/watch?v=Gcl0NOHPL3w
(i cant post links..)
Is it a normal thing to have on a phone like LG G4 considering the type of screen it has(LED)?
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ill remind that these burns are temporary

Fadidush said:
Hello i would really like your opinion about something wierd with my phone.
I have a LG G4 and after a while that the screen is alight I get display burns of the parts the didnt change in the screen and have a bright color (such as the clock and battery status, it also happens in games that i play which have the buttons displayed in bright color).
It calms down after a few minutes that the screen is turned of or i force it to display something diffrent in the burned parts
I'm having a video attached so you can see what i mean (in the video i spoke some language, please ignore)
In the video the burned parts are at the top and top left (the "share" sign)
youtube.com/watch?v=Gcl0NOHPL3w
(i cant post links..)
Is it a normal thing to have on a phone like LG G4 considering the type of screen it has(LED)?
Click to expand...
Click to collapse
Ive had 3 g series phones now g2 g3 g4. I have set my screen sometimes to not turn off. Some items displayed for more than a hour or 2. I have never had any screen burn on any of the g series. Some people claim they have i personally have not. My g2 was the closest to a screen burn. It had a cloudy type in white backgrounds. But found out it was hotspots in the phone that discolored the screen. I always tell people never the the same thing display more than 20 or 30 min shut off screen or goto something full screen to get rid of status bar icons. A phone is just like any other device or machine they do need periodic breaks too

any1 else think something about it?
i would like to get more ideas and opinions

u sure it's a permanent screen burn ?
the notification curtain is not fully opaque it shades the icons beneath it and that's all..

bennypo said:
u sure it's a permanent screen burn ?
the notification curtain is not fully opaque it shades the icons beneath it and that's all..
Click to expand...
Click to collapse
its not permanent but it is annoying,
takes 30secs of still image to burn and stop burning after another 30secs of displaying siffrent image on the same screen spot

Fadidush said:
its not permanent but it is annoying,
takes 30secs of still image to burn and stop burning after another 30secs of displaying siffrent image on the same screen spot
Click to expand...
Click to collapse
i agree with you it is ANNOYING as hell!!! I returned mine 2 weeks ago not only because of this but also because i cannot see nor connect to a 5 GHz Wi-Fi network.
Just 2 months prior top this the phone killed itself (not even 1 year old) and had to get a new PCB. LG if you are reading this, i want my money back.
Note to the people, please don't buy LG crap!

t00dy said:
i agree with you it is ANNOYING as hell!!! I returned mine 2 weeks ago not only because of this but also because i cannot see nor connect to a 5 GHz Wi-Fi network.
Just 2 months prior top this the phone killed itself (not even 1 year old) and had to get a new PCB. LG if you are reading this, i want my money back.
Note to the people, please don't buy LG crap!
Click to expand...
Click to collapse
I had the same problem on my g4, adorned him with display tester pro apk?

dejan88 said:
I had the same problem on my g4, adorned him with display tester pro apk
Click to expand...
Click to collapse
I've actually tested a lot of apps just like display tester pro..still believe it's HW issue that can't be fixed without screen replacement..how can this specific apk actually help with image retention? What exactly did you used?

Question Black bar issue

Hey guys, I've had the phone for about 3 weeks now. I started noticing it about a week ago. When I'm watching a youtube video at night for example or in dark environment on minumum brightness and pull the video down from the middle (when it shrinks the video itself and the screen gets gray on the edges) but don't close it, I can see a dark line where the status bar is. Seems that the youtube gray is perfect for the retention(?) to be seen. Does anyone else have the same problem or is it just me and should I ask for a repair or replacement? Sorry for the pictures, I took them with my old phone.
P.S. In case my explanation wasn't clear, when the yt video is on full screen, grab it and pull down and hold and you should see gray space around the video.
P.S.2. At first I thought it is a screen burn but after some research it appears that this issue is common on OP 8 Pro and is not image retention.
So is my phone faulty, should I book a repair or it's normal? Does anyone else have the problem? Tried changing to 60 fps but the bar is still there (
https://imgur.com/a/2XeSdGp
,
https://imgur.com/a/rpJAiHL
).
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aico60 said:
Hey guys, I've had the phone for about 3 weeks now. I started noticing it about a week ago. When I'm watching a youtube video at night for example or in dark environment on minumum brightness and pull the video down from the middle (when it shrinks the video itself and the screen gets gray on the edges) but don't close it, I can see a dark line where the status bar is. Seems that the youtube gray is perfect for the retention(?) to be seen. Does anyone else have the same problem or is it just me and should I ask for a repair or replacement? Sorry for the pictures, I took them with my old phone.
P.S. In case my explanation wasn't clear, when the yt video is on full screen, grab it and pull down and hold and you should see gray space around the video.
P.S.2. At first I thought it is a screen burn but after some research it appears that this issue is common on OP 8 Pro and is not image retention.
So is my phone faulty, should I book a repair or it's normal? Does anyone else have the problem? Tried changing to 60 fps but the bar is still there (
https://imgur.com/a/2XeSdGp
,
https://imgur.com/a/rpJAiHL
).
Click to expand...
Click to collapse
As the panel is made by Samsung, this is normal and it even appears even on the galaxy line flagships. It's a known tradeoff with having a hole punch and stems from the manufacturing limitation with their process.

Oh, I see. I've read that with the 9 series the problem is less persistent than the 8. Do you have the problem too? What's the chance that if I send the phone to repair the new display won't have it?

well that looks like the shadow that you can turn on and off in nova launcher, called "show shadow" but I'm not sure if you are using that.

Nope, I'm not. Also it doesn't make sense for it to display over other apps if it's the shadow. Anyways, I'm going to send the phone for repair.

aico60 said:
Oh, I see. I've read that with the 9 series the problem is less persistent than the 8. Do you have the problem too? What's the chance that if I send the phone to repair the new display won't have it?
Click to expand...
Click to collapse
I too have a faint row coming off the camera, it's alot less noticable compared to my 8 pro. There isn't any real way to deal with it as I read that someone RMA'd and had it replaced three times, all still had that "bar."

Is that woth the 9 Pro or 8 Pro, cuz I saw only one user of the 9 Pro complain about that bar. The problem is that I really don't want to wait a couple of weeks to get the phone back and don't want to risk the phone not being waterproof or arriving with any other issues. But you know that once you notice something, you can't just igonre it.

aico60 said:
Is that woth the 9 Pro or 8 Pro, cuz I saw only one user of the 9 Pro complain about that bar. The problem is that I really don't want to wait a couple of weeks to get the phone back and don't want to risk the phone not being waterproof or arriving with any other issues. But you know that once you notice something, you can't just igonre it.
Click to expand...
Click to collapse
Was with the 8 pro supposedly, but still applicable to the 9 pro as it's a manufacturing limitation with all Samsung's OLED panels with hole punches. Some will be less noticable. OLED panels are not pressed and rolled like you see with LCDs. They are fabricated in ultra clean vacuum sealed environments similar to making computer chips employing lithographic techniques and methods in various stage of production.. as such they are subjected to the "Silicon" lottery and the quality varies widely between panels.