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2 Nexus Ones Side by Side: Significant Difference in Screens!

I found a dead pixel in my first nexus one so I decided to swap it. The new one arrived today and I played with them side by side. The screens are very clearly different between the two. With everything set up identical and the same brightness setting, the one with the dead pixel is very clearly washed out looking with a greenish bluish tint to it. I actually noticed this somewhat before receiving the swap but thought it might be my imagination (the screen didn't seem as clear as my previous t-mobile version.) However, with them next to each other the difference was night and day.
I tried to get a good pic of it, but my photography skills are lacking and this is the best I could get. In person the one on the left (new one) is way better looking. The one on the right (sending back for dead pixel) has nowhere near the contrast and feels washed out, greenish, and unsharp.
So to conclude, if you think your screen might not be as as good as it should be, you may be right. I can't help but wonder if the dead pixel was just a symptom of a larger problem with the screen; perhaps the significantly reduced battery life I experience (compared to the t-mobile version I originally had) is also related to a screen issue. Time will tell...
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Update: Here's a better pic. Especially note the green tint and washed out look at the top right where the time is displayed. Look back and forth between them. I edited the color slightly so that what you see more closely resembles what I see. In person the brightness appears the same for both even though the right one looks brighter in the pic.

I agree that the dead pixel could of been part of a bigger problem, but the way the picture came out it appears as if the one on the right is alot sharper.
You should try turning the brightness down on the phones before taking the picture. Also did you lose a flash, or is this effect just from it being at 100%brightness?

I know it looks that way, but it's just a crappy pic. I'll try again later today before I send the phone back. I didn't use flash, and screen brightness had no effect on the difference between the phones.

I actually prefer the the one on the right. The one on the left looks way too reddish/pink. Have you done a side-by-side comparison on the lowest brightness setting and going to a white screen page like Google?

the one on the right kind of looks like the color on a droid screen

The one on the right is far more color accurate. The one on the left looks like my T-mo launch N1, which has blown out reds and makes everyone's faces red in pictures that I take until I move them to a PC with a proper screen.
Color accuracy should be preferred over "pop" and "vibrance", IMO

bradsh1 said:
The one on the right is far more color accurate. The one on the left looks like my T-mo launch N1, which has blown out reds and makes everyone's faces red in pictures that I take until I move them to a PC with a proper screen.
Color accuracy should be preferred over "pop" and "vibrance", IMO
Click to expand...
Click to collapse
Agreed, I wonder if HTC received a delivery of defective AMOLEDs from Samsung and just decided to use them rather than return them...

I had a similar issue. My old Tmobile N1 had a the blueish tint (like the picture on the right) but I had a dead pixel.
My new Tmobile N1 has the purple tint (like pic on left) and has no dead pixels yet. I've had them equal amount of time now.
I wonder if perhaps the old screens were having dead pixel issues and HTC decided to go with some different screens?

It could also just be the backlighting. The LED that's being used probably just emits at a higher temperature, eg more bluish-white.

erikikaz said:
It could also just be the backlighting. The LED that's being used probably just emits at a higher temperature, eg more bluish-white.
Click to expand...
Click to collapse
With AMOLED there is no backlighting. Each pixel is its own LED, red green and blue ones, emitting its own light.

I've taken more pics at different light levels. Here's one with the brightness set all the way down. I edited the colors slightly so that what you see more closely resembles what I see in person. The left one does not have a purple or red tint; its colors are correct. The right one definitely has a green tint and is washed out looking. Also, in person the brightness of the two appears the same even though my camera picked up the green tint of the right one making it appear brighter in the photo.
Look at the top right where the clock is displayed to really notice the green tint and washed out look. Look back and forth quickly at the time...

My phone had the same effect of the left one, that is when I first got it. Over time, it starter to slowly lose that red/purple like tint, and the colors became more sharp and correct.

i think amoled screens are somewhat of an organism

I just got my replacement phone from HTC due to dust under the screen on my original N1 (purchased second day of release).
I noticed that the newer phone had quite a few differences, including the quality of the screen. See my post about my observations here: http://forum.xda-developers.com/showthread.php?t=655966

INTERESTINg..How much more battery life did you get with the new one?

Omnia 7 - strange vertical lines on display

Hello,
I have noticed when I look to my display in more detail I can see strange vertical lines through it. It is not very visible but I can see it better when there is white color for example in mail application, or if I setup blue color for lock screen. I wonder if it's just caused by AMOLED technology or my HW is not ok. Is it same on your devices?
Thanks

emkovicz said:
Hello,
I have noticed when I look to my display in more detail I can see strange vertical lines through it. It is not very visible but I can see it better when there is white color for example in mail application, or if I setup blue color for lock screen. I wonder if it's just caused by AMOLED technology or my HW is not ok. Is it same on your devices?
Thanks
Click to expand...
Click to collapse
what colour are the vertical lines? samsungs OLED screens have pentile technology which kinda sucks in my opinion. basicaly it simplifys the pixel structure quite a lot so that it has the same number if pixels but rather than each one being split into a red, blue, green section they have 2 parts each alternating between red green and blue green. i think advantages are that this makes the screen brighter and colours stronger but it also reduces sharpness and seems to make the pixels more visible. i might be wrong for your case but I didnt realise this when i got the phone. still would choose it for the amazing blacks, just a shame they done have normal pixel structure.
hope that helps

NikD1 said:
what colour are the vertical lines? samsungs OLED screens have pentile technology which kinda sucks in my opinion. basicaly it simplifys the pixel structure quite a lot so that it has the same number if pixels but rather than each one being split into a red, blue, green section they have 2 parts each alternating between red green and blue green. i think advantages are that this makes the screen brighter and colours stronger but it also reduces sharpness and seems to make the pixels more visible. i might be wrong for your case but I didnt realise this when i got the phone. still would choose it for the amazing blacks, just a shame they done have normal pixel structure.
hope that helps
Click to expand...
Click to collapse
Thanks. But I think it's not pentile technology. It looks like tiny straight scratches more visible on top part of the display especially visible on bright color,s for example when I use green for lock screen. I will return it to my seller and hopefully they will fix it or give me a new one.

I noticed it on my Focus, as did Engadget in their Nexus S review:
http://www.engadget.com/2010/12/10/nexus-s-review/
We did see some strange issues with the display -- while it does look handsome in most settings, we noticed some troubling inconsistencies in the panel against certain colors or tones. It was particularly pronounced on solid gray backgrounds (as you can see above). We're not sure the cause of the problem (or if it was simply an issue with the device we had), but it was somewhat troubling.
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Can't decide which bothers me more though, the lines or the fact that the screen dynamically dims itself based the amount of white pixels that are displayed on screen.

I can't see those in my omnia, maybe it's only present in some of the panels?

ricep said:
I can't see those in my omnia, maybe it's only present in some of the panels?
Click to expand...
Click to collapse
It was quite visible in Game hub mostly on top part of the display. Or try to setup your lock screen to green.

I've noticed this on mine too. I'm wondering if it's just a bit of image retention from the live tiles on the home screen, much like you get on plasma screens. I've got a photo frame app which I'm using as a screen saver for a couple of mins each day to 'clean' the screen.
It may do nothing, but it's worth a try

emkovicz said:
It was quite visible in Game hub mostly on top part of the display. Or try to setup your lock screen to green.
Click to expand...
Click to collapse
cant say i can see any lines in the game hub but the green really seems to make the pixels more visible on the white 'games' writing at the top

My Guess would be that this too is due to the PenTile Matrix used by Samsungs Super AMOLED Screens. As the green occurs more often but only at half the size this might lead to this effect:
http://en.wikipedia.org/wiki/File:Nexus_one_screen_microscope.jpg
Sometimes I'm tempted to dub the Display a Super Lame-OLED but only until I see the colors next to a non OLED Display.

StevieBallz said:
My Guess would be that this too is due to the PenTile Matrix used by Samsungs Super AMOLED Screens. As the green occurs more often but only at half the size this might lead to this effect:
http://en.wikipedia.org/wiki/File:Nexus_one_screen_microscope.jpg
Sometimes I'm tempted to dub the Display a Super Lame-OLED but only until I see the colors next to a non OLED Display.
Click to expand...
Click to collapse
That's interesting. My problem looked like those tiny green vertical lines on your picture, but mine had grey colour and were very visible on top part of the display, in the center I could barely notice them. The other thing is that I should see them very close to each other but in my case they were 2-3 milimeters far away from each other, which convinced me that my HW is broken. Also when I showed it to the seller he advised me to send it back for repair.

New Galaxy S2 Batch Better Screen

I have bought 2 Galaxy S From the first batch for me and my.
Now I just purchased one for my father.
And his screen is much better, may be it is just the calibration
But the color seem more bright, vivid and white.
the color of mine is more yellow.
Just a thought
May be Samy improve for the last batch

No pictures and it didnt happen..
Sent from my GT-I9100 using Tapatalk

mine is very white as well, I have seen the ones with yellowing and mine doesn't have it.

May be is only that i don't have chance and the 2 first i get is like that.
In fact i don't see a band like other thread mention, it just like calibration thing.
But it is ok, if i haven't see my dad's one i would never notice
i don't think picture would reveal that small details, and will send his phone to the dad day.
Thx

Have you checked the Settings>display> Background Effects to verify both are on the same setting, and yours isn't on movie?

I read somewhere that some specific models have a yellowish colour problem on the screen..
This really shouldn't be normal, so my best answer is to send it in for repair

No yellowing on mine all looks good.

Are both phones using the same brightness settings?
On my phone, when the brightness is low, whites have a yellow cast, but on full brightness, they look very good.

Mine is white as well. No yellowish color or pink spots on camera shots.
Sent from my GT-I9100 using XDA Premium App

Stonos said:
Are both phones using the same brightness settings?
On my phone, when the brightness is low, whites have a yellow cast, but on full brightness, they look very good.
Click to expand...
Click to collapse
I'm sorry to tell you, but you have the problem
Engadget: "Affected users are reporting that the left side of their Super AMOLED Plus displays have a yellow discoloration, viewable mainly with low brightness -- especially on white and grey backgrounds."
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Source: http://mobile.engadget.com/2011/05/30/is-your-galaxy-s-iis-display-yellow-on-the-left/

bruflot said:
I'm sorry to tell you, but you have the problem
Engadget: "Affected users are reporting that the left side of their Super AMOLED Plus displays have a yellow discoloration, viewable mainly with low brightness -- especially on white and grey backgrounds."
Source: http://mobile.engadget.com/2011/05/30/is-your-galaxy-s-iis-display-yellow-on-the-left/
Click to expand...
Click to collapse
What he described is not the problem that people are facing.
BTW Engadget are simply repeating what people are saying here. They have no information of their own and it was people here mailing them that alerted them to the problem in the first place.

Blue1k said:
Mine is white as well. No yellowish color or pink spots on camera shots.
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
Photos?
Sent from my GT-I9100 using XDA Premium App

I've noticed on mine that the colour temperature gets warmer at lower brightnesses. Also dark grey takes on a brown cast. On full brightness it's perfect though. No left hand side yellow cast either that I can see.

There's 60 pages of discussion on this already and the points you're making have been made there a dozen times. Do we really need another 60 page thread on the exact same issue? In the other thread there's also a code to tell what version of screen you have. It would be interesting to see if the claimed "new batch" has a different version.
http://forum.xda-developers.com/showthread.php?t=1079444

Interresting, Once at home i will check that

Serav said:
I've noticed on mine that the colour temperature gets warmer at lower brightnesses. Also dark grey takes on a brown cast. On full brightness it's perfect though. No left hand side yellow cast either that I can see.
Click to expand...
Click to collapse
May be with time the screen degrade.

My Sgs2 seems a bit too green. But i can't notice too much yellow..
Btw the samoled+ is just awesome..
Sent from my GT-I9100 using XDA App

Just checked my screen first batch from handtech and no discoloration in any brightness setting, might be a bad batch?
Sent from my GT-I9100 using XDA Premium App

The main question arises....HAS THE BANDING issue been rectified...so i can FINALLY go head with my S2 purchase ? I'm hesitant to purchase such an expensive device..KNOWING it has a very obvious banding defect...and it seems samsung is unaware of its existence!

I had to ask this question, when I had my S8500 I always set the Brightness to 0, still the screen was enough bright with vivid colors and good contrast looked very sharp and there was no Bluish tint on the screen. But here with S-AMOLED+ if I set the Brightness to mid level or higher then the screen performs well and probably beat the former screen. But when it's set to Auto brightness it seems that the screen has a bluish effect and the whites are not perfectly white, the pictures are not that crisp like it was on the former one, in this case I'd easily say that former screen was better. Now is this a feature of S-AMOLED+ or problem? In low or 0 brightness it is the S-AMOLED which perform much better but not S-AMOLED+ !

[Q] Black level

Searched google and couldn't find user input on the black level. According to that early test by a Chinese site they found black level to be extremely good. Here's the image
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Now as the phones reaching users can anyone confirm in pitch black the amoled output? To me that's the most impressive improvement dating back to when amoled first went HD on the galaxy nexus and lost that level of output.

Yes, it is totally black. Way better than S3 and Note 2.

The blacks are the best I've ever seen.
The pixels are completely off, as opposed to previous amoled screens where there was still a light glow.

Wanted to give this Q too I had previously SGS2 and SGS3 is it even better than SGS2 display in the case of black displaying? I was very satisfied with SGS2 blacks... THX

kultus said:
Wanted to give this Q too I had previously SGS2 and SGS3 is it even better than SGS2 display in the case of black displaying? I was very satisfied with SGS2 blacks... THX
Click to expand...
Click to collapse
It's much better., Infact it''s impossible to get better blacks as the pixels are completely off.
I was always disappointed with previous phones as in a dark room once your eyes focused the blacks would look light grey and you could see blotches and streaks.
On the s4 you see nothing at all.
If you switch your phone on in the dark all you see is the samsung logo on the screen, nothing else.

perfect THX for response I hope that will have zero stuck/dead pixels

That's amazing. It's pretty poor form that all reviews as far as I'm aware have stated the previous amoleds with that slight glow as infinite black.
Anyway the S4 finally has something I'm really jealous of now. Another question similarly relating, does the brightness go lower than the S3?
?????? Galaxy S3 ??????

I think something is wrong with mine. I have the Galaxy S3 and I would say it's a really dark gray, not quite black. But on the S4, I'd say it has a reddish tint to it when I have it all black in a dark room. I may try and take a picture of it tonight.

jasbur17 said:
I think something is wrong with mine. I have the Galaxy S3 and I would say it's a really dark gray, not quite black. But on the S4, I'd say it has a reddish tint to it when I have it all black in a dark room. I may try and take a picture of it tonight.
Click to expand...
Click to collapse
I think its every device or atleast very common, but most people havent notice it (atleast not yet) . Ive come to realize its software related so im not freaking out yet. Just posted this in the ATT forums: http://forum.xda-developers.com/showpost.php?p=40841213&postcount=104

It is honestly that black that when I was waiting on a video to buffer in my pitch black room that it looked like the blue circle was floating!! literaly no light on screen apart from the blue circle. It actually looks really cool lol

Infy_AsiX said:
That's amazing. It's pretty poor form that all reviews as far as I'm aware have stated the previous amoleds with that slight glow as infinite black.
Anyway the S4 finally has something I'm really jealous of now. Another question similarly relating, does the brightness go lower than the S3?
?????? Galaxy S3 ??????
Click to expand...
Click to collapse
It is brighter than S3. :good:

It is perfectly black unless you suffer from the bug I posted about here: http://forum.xda-developers.com/showthread.php?t=2256651 .

its pitch black, i tried finding some ink spots/ blotches and black level last night but failed miserably

suadion said:
It is perfectly black unless you suffer from the bug I posted about here: http://forum.xda-developers.com/showthread.php?t=2256651 .
Click to expand...
Click to collapse
ghosting problem I'm reading on xda sounds bad too
?????? Galaxy S3 ??????

There is a comparison between S3 and S4 black/grey scale in this video, FFW to 17:10 (or watch the whole unboxing and comparison to HTC One video if you want).
You may have seen this by now, but if not it might answer some of your questions.

[Q] Screen changes color saturation with brightness.

Hello.
So I've noticed a strange thing while adjusting the screen brightness manually. When you slide the brightness slider it seems like there are individual brightness steps. And each step affects the screen colors differently.
Try it yourself. Like when you slowly slide the brightness slider, focus on the quick toggles background. It changes color slightly with each brightness step. It's very slight and you got to be in a dark room to notice it.
Does it happen on your note 3 too? Is it normal or is mine defective?
Thanks

That's called physics.
Colour is nothing more than light. The less light, the less colour.
Ever noticed how your eyes see everything in black and white in the dark? How the world becomes more monotone whenever there is less less?
Sent from my SM-N9005 using Tapatalk 2

ShadowLea said:
That's called physics.
Colour is nothing more than light. The less light, the less colour.
Ever noticed how your eyes see everything in black and white in the dark? How the world becomes more monotone whenever there is less less?
Sent from my SM-N9005 using Tapatalk 2
Click to expand...
Click to collapse
I don't mean less colour, but different colour tint with nearly each brightness step, some brightness levels got green tint, some blue and some red. It's hard to explain you have to try it yourself.
It's best noticeable when you download some 3rd party brightness slider adjuster and adjust the brightness while seeing your homescreen and not the almost black notification panel.

ongbac said:
I don't mean less colour, but different colour tint with nearly each brightness step, some brightness levels got green tint, some blue and some red. It's hard to explain you have to try it yourself.
It's best noticeable when you download some 3rd party brightness slider adjuster and adjust the brightness while seeing your homescreen and not the almost black notification panel.
Click to expand...
Click to collapse
I'm using LUX. Right now I'm at -56%(My night setting) and the hue is slightly green. It always makes my blue SwiftKey keyboard a very peculiar sea-green.
Which is still perfectly normal.
You are aware that screens are composed of Red, Green and Blue LEDs?
And that brightness is determined by how much light is emitted by each LED?
Naturally each step will have a slightly different hue.
The three don't blend their light into one, there will always be one of the three LEDs that is the dominant colour.
Sent from my SM-N9005 using Tapatalk 2

ShadowLea said:
I'm using LUX. Right now I'm at -56%(My night setting) and the hue is slightly green. It always makes my blue SwiftKey keyboard a very peculiar sea-green.
Which is still perfectly normal.
You are aware that screens are composed of Red, Green and Blue LEDs?
And that brightness is determined by how much light is emitted by each LED?
Naturally each step will have a slightly different hue.
The three don't blend their light into one, there will always be one of the three LEDs that is the dominant colour.
Sent from my SM-N9005 using Tapatalk 2
Click to expand...
Click to collapse
Yeah I know AMOLEDs are made of tiny green blue and red subpixels.
So in conclusion this is normal? Is this just another disadvantage of AMOLEDs display?
Thanks

I too have noticed this. However you will need another smartphone in order to see the difference. This is what I did and this is how I know that there is a slight tint.

ongbac said:
Yeah I know AMOLEDs are made of tiny green blue and red subpixels.
So in conclusion this is normal? Is this just another disadvantage of AMOLEDs display?
Thanks
Click to expand...
Click to collapse
Yes, it's normal.
It's more a disadvantage of the Diamond Subpixel configuration. AMOLED isn't at fault, it's the matrix configuration Samsung uses that causes this.
It features size difference in the three colours. As you change the brighness, one colour will overpower the other. The S4 and S5 have the same configuration, as does the Note 4.
Which looks like this:
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Keydas said:
I too have noticed this. However you will need another smartphone in order to see the difference. This is what I did and this is how I know that there is a slight tint.
Click to expand...
Click to collapse
Yeah. I started noticing it after I saw this problem on the samsung galaxy s3 mini. It was alot more obvious on that device.
Without that I wouldn't even notice it on My note 3.

ShadowLea said:
Yes, it's normal.
It's more a disadvantage of the Diamond Subpixel configuration. AMOLED isn't at fault, it's the matrix configuration Samsung uses that causes this.
It features size difference in the three colours. As you change the brighness, one colour will overpower the other. The S4 and S5 have the same configuration, as does the Note 4.
Which looks like this:
Sent from my SM-N9005 using Tapatalk 2
Click to expand...
Click to collapse
Okay thanks for the explanation.