Develop Bugs

Dirt and lines under screen

I noticed as soon as I turned my Nexus on today that there was a line across the screen that looked like dirt under the display.
It is only noticeable on low brightness but the auto brightness set the phone to minimum when I turned it on so I saw it. I can only also see it on bright backgrounds like the forum - it is not visible on dark backgrounds or the home screens.
Does anyone else have this issue? I will return it soon and get it replaced but I am wondering if this is widespread or I was just unlucky.
Try turning the brightness right down and looking at this page and see if you see any lines/marks under the glass.

I have a line as well but it's quite small so I'm not really bothered.
Sent from my Galaxy Nexus using XDA App

Few very feint lines here too. Setting phone to fixed second lowest brightness setting and they vanish though.

This issue is on the gs2's too.

if you go to every forum of a phone that launches you will see the same complaint. its a plague

Spinstorm said:
I noticed as soon as I turned my Nexus on today that there was a line across the screen that looked like dirt under the display.
It is only noticeable on low brightness but the auto brightness set the phone to minimum when I turned it on so I saw it. I can only also see it on bright backgrounds like the forum - it is not visible on dark backgrounds or the home screens.
Does anyone else have this issue? I will return it soon and get it replaced but I am wondering if this is widespread or I was just unlucky.
Try turning the brightness right down and looking at this page and see if you see any lines/marks under the glass.
Click to expand...
Click to collapse
I can also see two faint grey vertical lines on either side of the screen if I have a light (white) background and brightness settings 1-3!
I haven't come across any other issues, I only noticed it after reading this thread and now its in bugging me. But I love the handset.. better than I expected!
Are these lines normal or do I have a duff handset? I have a couple of weeks to change it if necessary but I am also aware of the stock availability due to high demand.
Anyone else in same situation (O2 UK handset)?

I have the same issue on the lowest brightness, but not on the highest. It is also very faintly noticeable on my SGS2 on the lowest brightness. On my Omnia 7 (samoled) it is also very visible on low brightness, I think it is an amoled thing.

BiGMERF said:
if you go to every forum of a phone that launches you will see the same complaint. its a plague
Click to expand...
Click to collapse
Exactly even the iphones with it's tinting issues SGS2 with it's Blotches in the dark
and the glass isn't perfect around the bezel
people just look for this stuff

I don't understood if this lines means defective screen or if all phones will have this lines.

I have the same thing on my Galaxy Nexus. I guess it's just a thing with Super Amoled screens, rather than a defect.

gambiting said:
I have the same thing on my Galaxy Nexus. I guess it's just a thing with Super Amoled screens, rather than a defect.
Click to expand...
Click to collapse
+1 Just as I said in my post above I have 4 amoled screen devices and they all it to some effect. Do not worry, your phone is fine.

could someone please post a picture so i can see what you guys are talking about? i'm curious to see what it looks like since i don't notice this on the samoled screen on my nexus s.

I had that issue with 2 evo screens. I would also get dead pixels or blotches.. Just have to get lucky with one I guess.

jms.flynn said:
+1 Just as I said in my post above I have 4 amoled screen devices and they all it to some effect. Do not worry, your phone is fine.
Click to expand...
Click to collapse
why is fine if it seems to have a problem?
do you think that it is normal to have lines on the screen?
can you tell for sure that every phone have that lines?

I have the same thing on minimum brightness. Its best seen by using a white image as wallpaper and having nothing on your far left and far right home screens. I have many vertical lines. When I scroll the home screen all the way over to the left until I see the blue gradient appear, the gradient varies in shades exactly where the lines are.
I noticed it as soon as i first powered on the device, same as the OP, as it was set to minimum brightness but I dont generally notice it any other time. I dont recall having the same problem with my galaxy S2

Screen problem: Is this affect of Pentile Matrix or not.

Hallo friends, i read lot of about problem with this kind of display( pentile matrix)
I have vertical and horizontal banding too. But this one is something what is bothering me much more.
http://imageshack.us/photo/my-images/208/imgp5137v.jpg/
http://imageshack.us/photo/my-images/809/imgp5134.jpg/

Delarock said:
Hallo friends, i read lot of about problem with this kind of display( pentile matrix)
I have vertical and horizontal banding too. But this one is something what is bothering me much more.
http://imageshack.us/photo/my-images/208/imgp5137v.jpg/
http://imageshack.us/photo/my-images/809/imgp5134.jpg/
Click to expand...
Click to collapse
That's nothing to do with the Pentile Matrix! Definitely a defective screen, return it to the store and ask for a warranty replacement. The 'banding' is more to do with the AMOLED screen technology rather than the Pentile, as it was present on my SGS2, but is generally only visible under certain conditions (background colour/brightness).
Regards.

Is it visible on colors other than grey?

Sure, on blue background too,sometimes on white.(poarws photo with blue background) It depends on brightness.
More visible at white background with high brightnes.
More visible at blue and grey background with lower brightnes.

It does have to do with the Amoled technology, but I doubt it's a defective display. You can try to exchange it to see if it really is defective or not.

I have some vertical and horizontal banding only with lowest brightness at the white background.
With maximum brightness no lines or whatever

AMOLED has a few imperfections here and there, so it's not surprising. But if it's bothering you too much exchange it for another one, it could have less prevalent issues.

Just performed a test using screen test app my screen looks great.
Sent from my Galaxy Nexus using XDA App

How high is brightness with test screen
Mine is fine too but 60 percent and more.But this one issue bother me pernament ( no matter if 30 or 70 percent brightnes)
Tuesday iam going for a new piece, hope that will not be affected worse than mine

Try viewing those shades of grey on your phones, it's usually the most problematic color. Use a low brightness setting (around 25%) at a dim environment.

This exists on all OLED screens. Its the exact same on my Nexus S. It has nothing to do with pentile matrix, but OLED.
Sent from my Galaxy Nexus using XDA App

Yes i had nexus one galaxy s galaxy s II so i can compare,nothing like that before that.
50-60 percent of brightnes

I have the Galaxy Note and it has the same panel as the Galaxy Nexus albeit at 1280x800 instead of the Nexus's 1280x720. (Super AMOLED HD with Pentile sub-pixel arrangement)
My screen is great. The whites are brighter than they were on the Nexus. The Nexus displayed whites with a yellowish tint especially on low brightness. Plus I can't seen any banding on the screen and I have tested it on White, Red, Blue, Green and Grey backgrounds.
Im getting a new Galaxy Nexus in a couple of days. Since this unit is from a later batch I hope that there is no banding on the screen too.

Funny, I have a similar issue to Delarock's on my Galaxy S2, manufacturing date is 19th of October. I'm still thinking whether to replace it or not since since it's only visible on dark'ish grey, I couldn't replicate it on lighter greys, white, or any other color at various brightness settings.

Delarock said:
Yes i had nexus one galaxy s galaxy s II so i can compare,nothing like that before that.
50-60 percent of brightnes
Click to expand...
Click to collapse
the same on lowest brightness...
so I always set up my phone to the hightest brightness

Hard for me to get a good photo but you can see the same problem on my NEXUS S screen. Its just a characteristic of OLED displays in general.
Sent from my Galaxy Nexus using XDA App

Really similar to the screen on my new Galaxy Nexus. I didnt notice the diagonal right away but that is certainly more significant. My screen a rosy hue in the bottom half and especially the lower left.

I'd love to see a similar picture of someone who says that their screen doesn't have it.
(Click for 100% crop)

So are some of these screens defective? Or is it really just the nature of the beast?
How does one tell what manufacturing date their device was made to? Would I be able to go to a store and exchange for a datecode that shows no banding issues?

I am having the same issue ... another thing I notice is weird issues with the camera while in a dark room. If I have my camera on in a low light room, I get this weird "dancing" of black blotches in the really dark areas of that room.
I like all solid black wall paper, I find the fastest easiest way to get it is to turn off the camera flash, put my finger over the lense and take a pic. Worked for every other phone I have but the GNex. I get a weird blotchy image ... now I am on GNex#3 (other 2 I returned for different issues) and I have noticed this camera thing on #1 and now #3. With the first one I assumed this was normal ... but after going from the second one to the third I see a HUGE difference in screens. With phone #2 I was able to do the phone/black wallpaper with no weird distortion. Now the really strange thing is that that same pic taken with the second phone (that displyed pure black on that device) shows up blotchy on device 3.
Hope this makes sense to someone lol cuz reading it back I sound crazy.
I just hope the folks at the Verizon store don't give me a hard time trying to get another one!

[Q] Who else is getting the dingy yellowish white color problem?

So my Note 2 and some others are experiencing dull and yellowish white contrast as talked about in this POST. Also this POST shows the Note 2 being much brighter. We've tested this with both units on high brightness and dynamic mode on, with the browser brightness all the way up as well. I even did a hard reset, and the low brightness dingy whites are still there on the Note 2. I'm looking into returning the phone for a replacement through the AT&T store I bought it from. Most people don't have this problem on their Note 2's so it seems like its only affecting a few units, but we need to get this out in the open. Maybe there are two different panel types shipping out. Please check and compare your Note 2's white's brightness compared to other Note 2's and other original notes and report here.

I'm also seeing the same dirty white screen. I might go to the local AT&T store to compare it with another Note 2 if they have a demo unit. If anyone can do this and get side by side comparisons I'd like to see this. I hesitate to do a replacement because they are probably only going to offer a refurbished unit as a replacement and the chances are it's going to be another unit with the same issue.

dstech said:
I'm also seeing the same dirty white screen. I might go to the local AT&T store to compare it with another Note 2 if they have a demo unit. If anyone can do this and get side by side comparisons I'd like to see this. I hesitate to do a replacement because they are probably only going to offer a refurbished unit as a replacement and the chances are it's going to be another unit with the same issue.
Click to expand...
Click to collapse
The AT&T store said they would order me a new one. When I called customer care (611) they would only offer a refurbished phone. So stick to the exchanging it at the store. The store I bought it from doesn't have any more in stock but are willing to order me a new one.

You know what stop comparing note 2 to other screens. Every screen has different color calibration and software versions effect this.
My first phone was galaxy s1 and the screen seemed fine since I had no other phone to compare but I compared to my ipod touch 2nd gen. Sgs1 had blue tint. Then I got sgs2 and the screen was very purplish compared to my friends sgs2.
I was obsessed to get the perfect screen so I changed it 5 times. 1 for the dead pixel and 2nd for the white spot on tje screen and the last 3 for the purplish hue. 3rd phone was really purple and obviously something was wrong. And I checked all the phones that are on display in various stores they had yellowish hue. But still compared to sgs1 it had warmer whites. Now I have note 2 and I recently put all 4 of them side by side and compared.
Sgs1: cool blue tint, looks very unnatural.
Sgs2: has a red hue compared to sgs1 but still looks not as warm (red) compared to itouch.
Note2: compared to sgs1&sgs2 it has a warmer white, much much better color balance of them all. However compared to itouch I realized it has a yellow hue.
BUT!!!! I compared it to my laptop's white and 40" lcd tv's white, note 2 still as not yellow as my laptop and tv.
If I were you I would try to enjoy the phone instead of comparing it unless its an obvious defect. Each screen is different and has to be calibrated. Its just means the calibration is different then other devices.
I have to admit, when I compared note 2 to itouch I was surprised by the yellow hue but I am not gonna go and change it again. Not every 2 screen is the same.
Think that your "note2 doesnt have a yellow hue" , maybe its your old note has a blue hue?

Also if you tilt the screen and look it from different angles you will see yellow hue disappear. I had the exact same thing on sgs2. You have to live with it. I am %100 sure even if you change 5 times you will end up with the same problem.

Wow fukn bs yellow ****
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

warfanax said:
Also if you tilt the screen and look it from different angles you will see yellow hue disappear. I had the exact same thing on sgs2. You have to live with it. I am %100 sure even if you change 5 times you will end up with the same problem.
Click to expand...
Click to collapse
warfanax is pretty right I went and exchanged it today for another note 2 and it looks the same an 4 units tested in store, all had warm whites....so that being said the OG note still has a brighter "looking"screen and brighter whites even if they are blue it gives the appearance of being brighter. Oh well, I'll live with it for the quad core and 2 gigs of ram though. Cant have everything...

I don't have the programming knowledge but don't think an app that changes screen colors is very hard to make. Some kind of color boost is already included in our phones in display section.
There was an app like that for sgs1 that let you tweak RGB colors.

warfanax said:
I don't have the programming knowledge but don't think an app that changes screen colors is very hard to make. Some kind of color boost is already included in our phones in display section.
There was an app like that for sgs1 that let you tweak RGB colors.
Click to expand...
Click to collapse
Like this
https://play.google.com/store/apps/details?id=com.netmanslab.sa

Futant55 said:
Like this
https://play.google.com/store/apps/details?id=com.netmanslab.sa
Click to expand...
Click to collapse
Thanks for the link but that app only washed the screen out with the contrast adjustment. It washed out the black levels. I just realized that I'm running Paranoid Android on my original Note and under Settings>Display there is an option for filtering and dimness. Its set to (20) by default. If I lower the number to like 10 it then matches my note 2's screen brightness at 100%. Its as if this Paranoid Android setting makes the back light on the Note 1 put out brighter (while killing battery life I'm sure) while still keeping the black levels black. Could this setting be what is making my note look brighter than my note 2 and can settings like those be applied with a new rom or an app on the Note 2?

I exchanged out my Grey GN2 for a white version for another defect issue yesterday and the screen on this new phone is definitely whiter. I'm happy, but I agree with others that the yellowish screen was probably due to normal manufacturing tolerance variations.
Sent from my SAMSUNG-SGH-I317 using Tapatalk 2

I'm within my 14 day window so I'm going to go to the ATT store and compare mine to another GN2 and if mines deficient I'll have them replace it. Will post back with results in a few days.
Sent from my Nexus 7 using XDA Premium HD app

[Q] Pink tint on lower half of screen? Normal?

Hey everyone,
I got my black AT&T Note 4 earlier today. I noticed the lower half of the screen is slightly darker, and has a slight pinkish tint on a white screen.
I do notice it in some apps, like Kindle when readinga book. Top of screen is slightly brighter, and when background is white there's a very slight pink tint.
Is that normal? Or should brightness be uniform and no tint?
EDIT: I added a photo. It's not a good photo but you can see how one side is tinted differently. In the photo the brighter top looks greenish but in real life it's not green. You can also the slight pinkish tint in the bottom half, which is the left side of the photo.

I wouldn't want to comment based on the image you uploaded directly since how a camera captures a digital display is much different than what the naked eye will see. If the picture on the panel is not consistent and appears polarized in any way, I would consider that to be faulty. Get it replaced.

Galaxy Note 4 (pink tint lower screen)
Hi there,
I have also noticed a pink tint on the lower half of the screen on new Samsung Galaxy Note 4.
As i intend to do a lot of drawing on this device the tint is unacceptable.
I wonder if there is a way to calibrate the display?

I had this issue with my Galaxy S3 display. I had at&t exchange it.

Have this same issue on my Note 4. Posted some pics over in the thread on this topic for the Note 3 before I thought to check here. Basically there's a brightness and gamma gradient from top to bottom. The top half is perfect and the bottom half gradually fades to a point where you lose the first 8-9 squares on the lagom.nl black level test.
This one emphasizes the black crush, which can be visible in video content on a dark screen (and makes dark colored backgrounds fade to black towards the bottom):
And here's one on a white background. At first it seems like a white point issue (which I would tolerate since it's common on IPS as well), but it's a brightness gradient:
Between this and the fact that AT&T disabled the slider for auto brightness I'm a little frustrated with this supposed best smartphone display ever (I realize this second issue isn't Samsung's fault, but the auto brightness is unusable without that feature). I bought the phone at Best Buy which is mostly out of stock right now so an exchange isn't likely, assuming they even take this seriously as an issue.

My note 4 does not display this issue.

No issues here. Display looks very consistent.

mkalbarc said:
My note 4 does not display this issue.
Click to expand...
Click to collapse
Have you tried a dark background in a dark room? For me it wasn't that obvious until I did this (was messing around in Sketchbook). If the majority of screens are better than mine I'll definitely be trying to get a replacement as this is bothering me.
I just installed Lux to resolve my backlight issue and its settings menu background fades nearly entirely to black at the bottom.
*Edit: So far it sounds like this is an anomaly. You would expect places like Anandtech to report on it if they'd seen that amount of variation. I'm going to have a good time trying to convince someone at BB that this is a real defect though.

Erica Griffin talks about this issue in her Note 4 review, around the 20 min mark: https://www.youtube.com/watch?v=-OyNWrQJzMY

I got a replacement and it's perfect. No pink tint.
So, if you have the tint return it. Not all Note 4s are like that.

msk said:
Erica Griffin talks about this issue in her Note 4 review, around the 20 min mark: https://www.youtube.com/watch?v=-OyNWrQJzMY
Click to expand...
Click to collapse
Thanks, that was quite helpful. I think in general it's easier to trust reviews on retail-purchased devices over mainstream reviews with PR department selected units.
I went to BB today and looked at the display units. All perfect, but then that's not surprising (every company gives their display/review units a second QC pass, even Apple). I'll probably head to the only BB in the area that has units tomorrow and see if I can do an exchange. As long as they don't make me sign one of those "no more returns" agreements I've heard about I'm willing to take another shot in the display lottery.
TapperP said:
I got a replacement and it's perfect. No pink tint.
So, if you have the tint return it. Not all Note 4s are like that.
Click to expand...
Click to collapse
Good to hear! I'll post my results after my exchange attempt tomorrow. Aside from the gradient I am impressed with the display. Not as bright as LCD in daylight, but I was drawing on a black BG last night and noticed that it has deeper blacks than my Pioneer plasma.

Atomic Walrus said:
Good to hear! I'll post my results after my exchange attempt tomorrow. Aside from the gradient I am impressed with the display. Not as bright as LCD in daylight, but I was drawing on a black BG last night and noticed that it has deeper blacks than my Pioneer plasma.
Click to expand...
Click to collapse
Fingers crossed for you to get a nice one like mine.
Yeah, the blacks and colors are amazing on the Note 4. The whites are not as bright as the iPhone 6+, but they are fine and way better than whites on my Note 2. In all other respects the Note 4 screen is overall better than even iPhone 6+'s excellent LCD.
One minor disappointment is the very high resolution has made some emulators dog slow as they attempt to render at full resolution, i.e. PPSSPP and ePSXe using ogle renderer. Hoping the devs find a workaround, maybe rendering at half or quarter rest instead - that would still be higher rest than my Note 2 at full rest. :laugh:

What's the color of your device? Anyone have this problem in the white version?

my note 4 has pink tint
I have the same problem on my Verizon white note 4 but on top half of display. Replacement should arrive by Friday :/

You can replicate this by looking at the screen at an extreme angle, obviously the ones that see green and purple straight on are screen defects.

I have a white version and whites are perfect and too bright at high setting. I keep mine half way. The whites are better IMHO than the iphones. The colors more vibrant and, the sharpness is ridiculously sharp. I dont see how they can improve it. I only thing there should be a waynto adjust the color saturation, because basic mode doesnt do much on mine.

My Note 4 has the same issue. It almost looks like the while balance differs from top to bottom, but it is really the brightness that is different.
This is a photo of my Note 4 showing a solid colored image at #030303 (very close to black). It shows how different the pixels in the bottom and in the top emit light.
Image can be seen at 1x.com/tmp/uniformity_note4.jpg
Looks like crap.
/ j

I though i had ocd with phones but that just doesnt bother me in the slightest. Cant really tell unless you force yourself

http://forum.xda-developers.com/showthread.php?p=56562683

similar problem
I have a similar issue, though mine is brighter on the right side than it is on the left. Very noticeable with dark background in lower light situations as someone else mentioned.

Display color

HI, my display is darker on the right side if I put a gray color in fullscreen with low brightness. I'm using swift dark substratum. OnePlus told me that it is a defect of all amoled. Does it happen to you too? sorry for my English. See attachments. Thank you.

Mine is noticably darker in the lower part of the screen. I've read tons of reviews and stopped worrying about it -- the AMOLED displays can't show consistent color by nature.

I had this problem on my OP3 but I left it too long thinking I'd get used to it so I couldn't return for a refund or exchange. Don't leave it too long and get yourself a refund or exchange if possible. That's cleary a defective screen.
Fortunately my new 5T is so much better. And is pretty even with the screen uniformity.

I have this issue but only at certain brightness levels, fortunately it's very minor to the point where I can't notice it unless I'm actively looking for it

I've had 4. All the same uneven tints. But but different from left from right which is off putting when reading or looking at content with white or grey backgrounds. Sending it back trying something else