yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy Nexus] aalin13:
I'm now on my second GSM GNex and this screen really delights and frustrates me at the same time. I love the sharpness and the punchy colour, but the colour reproduction when displaying solid colour is really bizarre.

On my first GNex, the screen had a slight blue hue, but not as obvious as SGS1/2. However, I exchanged it due to a persistent blue tinge along the top of the screen. Now on my second GNex, the screen has good uniformity for colour reproduction and no streaks. However, it has very obvious grains at low brightness (<15-20%), and the colour temperature is more warm.

The colour temperature is where it gets a bit funny. Under office fluorescent lighting, the screen is slightly cold when showing plain white, whereas when outdoors under the shade, it has a slight pink hue (i.e. warmer colour temp). The pink hue is more obvious when displaying solid grey like ICS keyboard, where the grey has a slight purple colour to it. This difference in colour temp is most obvious at lower brightness, and becomes less obvious at above 40% brightness.

For comparative purpose, I loaded up Google.com to compare the the screens when showing white and headed down to a local phone store. Compared to the iPhone4S, my GNex has a very slight pink hue. Compared to a Sensation, my GNex has a cooler colour temp. Compared to SGS2, my GNex has a pink hue as well. Compared to another GNex at the local store, again, my GNex has a pink hue.

After the trip, I'm not quite confused as to whether I should ask for a 3rd GNex. It seems that compared to other SAMOLED screens (which I have been using for the past 2 years), the GNex has a visible pink hue. But compared to LCD screens, the GNex ranges from slight pink to slight blue. Prior to the GNex, I've never bothered with looking at the screen on my SGS this closely, but since getting the GNex and reading about the screen issues people are having, it is making me rather pedantic and confused if I should ask for a 3rd GNex or hold onto the current one.

PS: I'm at work now, but I'll try to take a few photos tonight of my GNex next to SGS1/2 to show the difference in colour temp.

PS2: Just wondering how do you guys measure colour temperature of the screen in a scientific way? Would using my camera and take a photo of the screen in custom WB mode be sufficient? I know on my camera, when I use custom WB, it will tell me the colour temperature selected. Cheers!

PS3: Updating the post to include links to photo of my GNex next to my SGS

http://www.flickr.com/photos/73445319@N06/

Only the first 4 photos are relevant. The rest are from my first GNex which was deemed to be faulty. With the first 3, it is obvious that SGS has a cooler colour temp, and GNex a bit warm. What is more annoying for me is the 4th photo with the toggle for WIFI and bluetooth. They appear to be a bit purple on my GNex. Any comments?

Thanks!
[Samsung Galaxy Nexus] Setito:
My third change, also has strange spots

-Right a strip of pink

-Left yellow warm

-Mild upper edge green line

-A solid blue pixel

Noticeable with low brightness and gray backgrounds.

The first had a dark horizontal line on the right.

And the second a white spot the size of a pea on the screen.

I have to settle for third

No further changes accepted: (
[Samsung Galaxy Nexus] adsamcik:
Just dont deal with screen issues that you dont notice every day and are not that big problem. If in 99.9% situations the screen is ok let i be, we are still not in age where everything will be perfect. I compared display with Iphone 4S and be happy guys. It has much better colors (not sure with white). Black is much much more black and other colors are more richer. 4.0.2 factory also increased minimal brightness so this paper pattern is no longer big deal. I was really worried about display when I bought it but now everything is ok. In the evenings I switch on the screen (to look at clock) and black merges with borders and I just see beatiful screen :). btw its just Super Amoled HD not plus. Plus should be still in development and maybe it will appear in Galaxy S3 I would rather if not (it feels better if you know there isnt better display). Some models have issues but I dont know smartphone or just phone which dont.
[Samsung Galaxy Nexus] kms108:
:p:p+1:p:p
[Samsung Galaxy Nexus] darkvice01:
I'm using auto brightness... only when I watch movie that I go 100% brightness.
[Samsung Galaxy Nexus] adsamcik:
Thats really not bad new for me, its a good news, cause I am not the only one that starting to having serious issues after about the same time. I have noticed stripes on white screens and they are pretty noticable something like 40% but you can see them on 100% also but you most probably have to know that they are there. I used auto screen brightness. btw its just HD SuperAmoled, not Plus. Plus don't use pentile and is not yet included in any device. I have also problem with 3 pins charging so I'll try to exchange the phone for new one...
[Samsung Galaxy Nexus] chrone:
On this 720p panel, i hardly see any pixelated though i try really hard.

Perhaps you have a washed out colors problem with the display like my first nexus came. Got it replaced for twice and i took the first replacement, much better

color production, only stripes and ghosting on gray backgrounds.

yikes, even autobrightness didn't help with the screen life. That's why there's no SAMOLED on desktop monitor. :(

I wonder how long actually a normal HD SAMOLED display usage life span, 6 to 18 months top?? :(

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] darkvice01:
For HD samoled plus Samsung said it should last for 18 months. For this one HD samoled I really don't know how long.. but mine just lasted 4 months so I guess it has low life span,I really doubt if it will last 18 months with low led deterioration, unless you don't use your gnex for gaming or watch a movie. By the way I just checked my friends galaxy s and ask how long she had her phone,she said more than a year. Then I checked her super amoled screen.. and it has same issue but the difference is you can barely notice it. In short its better than HD samoled. Just new discovery that gray stripe line when you go to settings, some of the lining is now pinkish when before it was grey or dark grey. Surely I'm going to ask for replacement soon. I guess if you want a very good android phone. Avoid this new amoled. Just get HTC or Asus padfone since Asus uses super amoled plus which I think has no issues like the HD samoled screens.
[Samsung Galaxy Nexus] chrone:
Nice info there. Now it makes me curious what types of panel is having the best life span.

Are they TFT > S-LCD > S-LCD2 > IPS > AMOLED > SAMOLED > HD SAMOLED > SAMOLED Plus > HD SAMOLED Plus?

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] darkvice01:
S-LCD and S-LCD2 has very good life span. I had desire HD which uses S-LCD. The way I used the gnex is the same as I used the desire HD. I had it for 9 months and never have I notice that the brightness and the color deteriorate.

Only downside of S-LCD's it eats more battery but quality wise its great. I hope the next nexus won't use amoled anymore. That is if manufacturer is no longer Samsung.
[Samsung Galaxy Nexus] chrone:
totally agree on no more samsung for the next nexus. haha :D

yeah i love the s-lcd/s-lcd2, great black, great white, great gray, and great contrast to all colors, makes picture more alive than real life.

i don't know much about ips, but somehow anandtech wrote that ips also has this gray issues.
[Samsung Galaxy Nexus] i n f a m o u s:
I had issues with having black 'spots' that were only noticeable in black backgrounds on two different Galaxy Nexus phones. My GNex from the Play Store doesn't have that issue but I'm starting to notice some ghosting on grey backgrounds.T_T

I always use my phone on minimal brightness setting to preserve the screen, do you guys think this screen will last three years?
[Samsung Galaxy Nexus] darkvice01:
Yes but not the quality of the screen it self.
[Samsung Galaxy Nexus] RevengeFNF:
You can send it to warranty.
[Samsung Galaxy Nexus] thegtfusion:
I have some small black dots... if it gets more, I'll get a replacement. They are barely visible. Not that much either but they are there.
[Samsung Galaxy Nexus] darkvice01:
Almost all gnex has that... if the black dots is on visible is dark room or place then just use and live with it for now.. mine has it too.
[Samsung Galaxy Nexus] thegtfusion:
:eek::eek: omg really? So that means if i would get a replacement, it can also have the black dots? :eek::confused:

Wtff
[Samsung Galaxy Nexus] darkvice01:
Or worst. Coz I ask my LCD to be replaced and black dots are more worst than the original LCD. It will take 3 or more replacement before you can get an LCD that has no black dots even if you get an LCD has no black dots for sure it will different issue. So if your LCD is just having black dots then just keep that and before your warranty expire ask Samsung to replace the LCD. At least you will new LCD.
[Samsung Galaxy Nexus] nadera:
blining cursor

how doese it work? :confused:
[Samsung Galaxy Nexus] kms108:
Are you referring the black dots as the black splotches only visible in a dark room with black screen on, if that is the case the warranty does not cover it, samsung will say it's normal with all samoled screen, it's there because samsung reduced the QC in the production line for faster production to cope with the demand, all models with amoled or phones before the i9000 does not have them, those phone also has the complete black screen without light coming through.

You either get a lot or just a little, it's very rare you will get a perfect one without the splotches, I have the s3 now and I only have one dot about 1.5mm right in the center which I consider very lucky:fingers-crossed:.
[Samsung Galaxy Nexus] chrone:
If we could only sue samsung for this crappy product. :(

I wonder why google doesn't even bother with these issues? What will steve jobs do about these issues if it affects -hypothetically- apple iphone display?

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] akelino027:
I think some of the pics (the one with the black screen) are due to moist when they are inside your pocket.. got mine with this and hopefully be okay after it gets dry..
[Samsung Galaxy Nexus] imablackhat:
Okay so I finally got my fourth replacement its a Korean.09 model. Radios good. Screens not purple for once however I have another issue and people told me it would get worse and I should get another replacement but I'm not sure.

I use trinity kernel so it's -24 contrast stock which doesn't bother me. I like how it looks.

But if I turn the contrast to 0 and look closely I have horizontal bands up and down the screen.

For the two minutes I had it on stock ics with brightness all the way up i don't recall seeing it... And I don't use stock kernels. Only trinity.

Will it get worse? I figure if it does ill say I want another. And grab the screen from it and put it in this one and return the refurb.
[Samsung Galaxy Nexus] ste1164:
It's probably these issues and pentile that stopped apple using amoled in their displays. The technology isn't as advanced as LCD.
[Samsung Galaxy Nexus] darkvice01:
That's weird coz Samsung did replace mine when I told them about the black splotches. I don't know where you got your information.
[Samsung Galaxy Nexus] chrone:
well the black spots surely are not due to moist. Have been there for a whole month without any change at all.

you should try it on stock/vanilla jelly bean since trinity kernel minimizes these defects like a lot. I don't know the effect od increasing gamma to display lifespan though.

That's good news for you to have zero black spot with the replacement. :)

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] kms108:
Thats normal, the info is on paper, but different countries operate differently, and rather reject a customer regarding the problem, they just put a new screen in for you knowing that it also has the same problem, so they wont get complaint about it.
[Samsung Galaxy Nexus] darkvice01:
I do have black spots
[Samsung Galaxy Nexus] DJDB:
On my device, there is a "bleeding" on text (like motion blur) when scrolling slow and there is text on screen (more noticable with white text on black background).

Is this normal?

I do have those spots everyone talks about when there is low lighting and a black texture on screen, but that doesn't bother me. Motion blur is a problem though...
[Samsung Galaxy Nexus] chrone:
yeah i guess that's normal to have motion blur on bright text with dark background especially grays. i have those too when using tweetdeck, it has white text with gray background.

it seem this samoled display lacks and lags in producing something out of white and especially gray backgrounds. it's like a temporary ghosting for static images, but since you're scrolling, it feels like a motion blur though it will fade away in time. :)
[Samsung Galaxy Nexus] mongkeboy:
Awesome

Great guide, checked my phone, ready to void warranty!! :)
[Samsung Galaxy Nexus] jean71:
Nice thread
[Samsung Galaxy Nexus] donsalieri4:
Hi to everyone. I have the GNexus from one week, I checked and it has the problem of black spot but this issue is visible only in dark room and with very low brightness. So until now for me is not too annoying.

However there is someone who solve it with the warranty in ITALY?

Because I prefer avoid to stay one or two months without my GN only for having new one with the same problems. I have read several posts but it seems that sometimes reparied GN works fine, sometimes has the same or worst problems. :confused:

Thanks and sorry for my English
[Samsung Galaxy Nexus] chrone:
I guess the black spot you're talking about is inevitable. Majority of us have this problem.

I remembered even kms108 have this too on two of his samsung galaxy s3, but the newest one is only having one tiny black spot at the center. Perhaps samsung galaxy s3 display has much better quality than samsung galaxy nexus after all. :)

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] kms108:
correct

my gnexus also had them, but it was along the side and none in the middle.

my gnexus is gone now:(
[Samsung Galaxy Nexus] imablackhat:
Okay so I have some horizontal banding across my screen even in my top bar. Its hard to see in the photos I've turned up contrast all the way to get it to stick out as much as I could.

It occurs on stock ICS

Mrom jelly bean stock

And sourcery jelly bean

However it doesn't occur on paranoid android. I don't know whats different...

Trinity kernel to adjust contrast to get it to show up more.

Thoughts? Why on every ROM but pa
[Samsung Galaxy Nexus] alangrig:
Doh, you have heavy purple tint!!! Your screen is definitely defect one.
[Samsung Galaxy Nexus] imablackhat:
it only shows up purple because contrast maxed. it doesnt normally look like this. my grays are actually gray, even with brightness all the way down (first screen ive had that colors are correct).

however i have horizontal banding in all roms except paranoid android. go figure? even stock roms and stock kernel with just max brightness. however i like trinity.

id like to have more options then just paranoid android to work around this horrible sight
[Samsung Galaxy Nexus] Lesicnik1:
He turned up the contrast to the max, to show his banding issues probably.
[Samsung Galaxy Nexus] alangrig:
I see. Just being blind.
[Samsung Galaxy Nexus] chrone:
weird, somehow i double posted. :confused:
[Samsung Galaxy Nexus] imablackhat:
This is my seventh replacement. They are getting sick of me calling and now I have to wait for my other three to get back to them before I can get another. They also say I soon have to go into the Verizon store so they can mark it on my account because they aren't believing me anymore. What I've been doing now is I get the replacement. And I crack it open and switch screens and see if its better. Heh...

Also my strange thing is why do these annoying lines show up with the contrast higher on every ROM but paranoid.
[Samsung Galaxy Nexus] chrone:
If you don't mine with the time and energy you spent for the warranty thing, then never give up!! :)

Since I maxed out my replace warranty from a local store, I'm also in a process of getting my display replaced with one made in Korea after emailed them with tons of complaints. Hehehe.

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] darkvice01:
What website did you made your email complaint? coz I'm in the process of replacing my LCD also. Coz for sure the LCD I will have will be made from china. I ask the technician if the LCD will be pentile version unfortunately they don't know anything about it.
[Samsung Galaxy Nexus] alangrig:
So, finally I've bought best Galaxy Nexus I've ever seen from observed 50 units in total. My Galaxy Nexus has no: purple tint issue, graininess, bandings, major black ink marks, renetion. In simple words it's amazing. Battery fits very tightly. Rear speaker produces very clear sound as well internal one. It is C7 and clearly stated on the sticker of the phone under the battery: Made in China by Samsung.

Now my fight is over with victory. Has to admit patience is vital.

Good luck to everyone! Photos will be submitted later by the end of the week.

---------- Post added at 07:44 AM ---------- Previous post was at 07:41 AM ----------

http://www.lagom.nl/lcd-test/black.php

Best test for purple tint issue.
[Samsung Galaxy Nexus] chrone:
Samsung USA, China, South Korea, and Hong Kong. Go to the Contact Us section and email them.

I used Chrome with Translate extention to translate South Korea & China sites. Hehe.

Congratz dude! :)

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] chronophase1:
My Nexus S has those black spots as well. Just like my GNex, only seen in total darkness, like in my room at night. Meh. As long as it doesn't interfere with my daily use, I can deal with it.
[Samsung Galaxy Nexus] chrone:
Totally agree, the black spots are acceptable at some level.:)

Jus curious, is Nexus S quite fast as Nexus in Jelly Bean?

I've been tempted to downgrade this Nexus on a S-LCD display of Nexus S.:P

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] chronophase1:
Its quick for what it is. Not sure if I would downgrade from this baby though. Haha.
[Samsung Galaxy Nexus] planeteclipse:
took my three phones to get the best screen. but with the last phone the vibrator is weaker than the first two
[Samsung Galaxy Nexus] aeoveu:
I tested a Nexus S with Jellybean yesterday - and while it was smooth for the greater part, it still did jerk a bit here and there.

Didn't test opening apps; I just wanted to test if it was as smooth as the GNex was w/ Jellybean.
[Samsung Galaxy Nexus] chrone:
Thanks for testing it out, dude. :)

Sent from my Galaxy Nexus
[Samsung Galaxy Nexus] venom_762:
So my new Gnex has some slight banding, is it normal? None of my NS had it.
[Samsung Galaxy Nexus] i n f a m o u s:
Will Google replace the device entirely or just the defective screen?
[Samsung Galaxy Nexus] mkouk:
Samsung replaced my screen due to a burn-in issue at the bottom of the screen where the navigation buttons are. The screen i have now is much worse! From the middle of the screen there is a gradient blue tint that is becoming darker as towards the top edge on white background and low brightness.

I thought i could convince myself to keep it instead of sending it for another two weeks without my Gnex. But... i also discovered last night that it has about 30 black spots that are visible on a black background! So my Gnex goes back to Samsung for another screen replacement. Although i am not optimistic that the situation will get any better. Surely the repair centre have screens from the same batch.

Does anyone know what settings to use in a camera to take a snapshot of the black spots? I have tried but so far failed to capture the defects on a photograph.

The below photo is showing the difference of colour reproduction at the top of the screen. I have download the LCD Test app from the market and set the colour to white with low brightness. There is a clear gradient that starts from around the middle of the screen and gets darker as it gets closer to the top-edge of the screen.
[Samsung Galaxy Nexus] daniel4518:
My gnex has a very blue tint when tilted, this is my 5th phone due to different issues. Everything else works great on the phone so I haven't decided if I should send it back because of this issue. Any recommendations?
[Samsung Galaxy Nexus] chrone:
night mode or normal mode without flash in a very dark room with pure black background on your screen perhaps?

as for blue tint is not normal, but perhaps it's better for a long run. it will get better in time as the blue diode runs out.

resources:

wikipedia
[Samsung Galaxy Nexus] Joselito22:
Excelent topic.

I did the best config.

Thanks!
[Samsung Galaxy Nexus] chrone:
well i didn't have other camera beside this galaxy nexus, so can't help you much. i did have tons of black spots too when playing black backgrounds in a very dark room (watching supernatural series usually). :)
[Samsung Galaxy Nexus] mociuamin:
I have a problem with Galaxy Nexus for 40 percent charge. In this condition supply drain battery. Plz look my screenshot.

I'm tried because my phone is new and has this problem. I'm waiting for your answer ....

thanks a lot.
[Samsung Galaxy Nexus] metal571:
Let the phone completely die and charge it back up to 100% about 5 times and it should go away. If not, bad battery. Also, wrong thread.
[Samsung Galaxy Nexus] darkvice01:
I got my replacement LCD and guess what its purple screen. And i discovered something if you have a night light that has small bulb a red green and blue,its good to test the LCD for image retention and horizontal lines. Now I just have to wait again for another replacement.
[Samsung Galaxy Nexus] chrone:
dang samsung! haha, same here in Indonesia, two of my colleague replaced their displays in samsung service center and still got purple tint. their displays were made in China though.

good luck, dude! :)
[Samsung Galaxy Nexus] Mister Hat:
Is this gridlike white line pattern normal for half brightness?

http://i.imgur.com/GUVqd.jpg
[Samsung Galaxy Nexus] Eric_Eric_Eric:
Yeah, that looks fine. Also, is that ICS I see? Tisk, tisk... haha :cowboy:
[Samsung Galaxy Nexus] SirBindy:
Just got a replacement gnex today and the screen is all purple and blotchy. Called 'em back for yet another replacment.

Such a f*cking hassle...
[Samsung Galaxy Nexus] pnut22r:
I am waiting for my fourth. LOVE THE PHONE, but hate the screen problems. Still wouldn't trade it for anything else
[Samsung Galaxy Nexus] thefatalepic:
I was planning on returning mine because there's a lot more of those grid lines / bands than there were when I first bought the phone. I figured I'd search to gain a little understanding of the return process. Reading this thread has convinced me that I should just deal with what I have rather than risk having 3 more defective phones being sent to me. Thank you all.
[Samsung Galaxy Nexus] adsamcik:
Mine started burning, not literally of course :) There are pretty noticible icons when coming from something to grey even thought it has been on screen for just a second. The screen is just weird because some days its pretty nice, no problem even when I look for them and other days they are noticible even with highest brightness. I hope they will learn their lesson, make awesome OLED screen (I know its not likely to happen) or put there the screen that HTC One X has, never seen it thought but I heard that its pretty cool and colors are even better than Nexus has.
[Samsung Galaxy Nexus] chrone:
couldn't agree more, S-LCD2 is the way to go now. :)
[Samsung Galaxy Nexus] chupzz:
I bought a Gnex about 3 days ago and just got my amoled screen replaced by Samsung and it's good. No more banding. Before the banding at blue and grey color is really visible, even at 70-80% brightness. Now the banding issue is minimum, only visible at 10-15% of brightness, the viewing angle also very good.