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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.

Anyone worried about stuck pixels?

Hallo,
I'm coming from an HTC One, of which I had 5 as every single one had stuck pixels. As minute as they are in a screen this sharp, they still make a device feel 'tainted' out of the box and I couldn't put up with them. I have much more faith in Samsung, but can't help but feel a little apprehensive that my bad luck will continue!
Now, I have seen conflicting reports about whether AMOLED can get stuck pixels or not, or whether it is just dead pixels that can occur. Can anyone shed some light on this for me?
Also, I had a SGS3 but never noticed any display flaws at all. Has anyone had any issues with Galaxy products in the past?

As I know, AMOLED it's not LCD, there is no backlight and the composition is organic. LCD use more energy, doesn't have black background and have problem with the pixels just like every LCD tv. AMOLED screens are different construction, so there would be no dead pixels. However, you can have black spots with black screen in darker rooms (I know sounds awful, but yes...most amoled have this issue but can't be seen in normal conditions) and the pixels can burn and lose intensity (never happened to my phones). So, amoled is much safer than lcd and the colors are more natural

^What has Exynos got to do with anything? :/
Well, I haven't had the dead/stuck pixel issue with the Note II, which I had with every single LCD phones to varying degrees. And seems like AMOLEDs tend to suffer from this a bit less too, relatively speaking. But AMOLEDs are not immune from stuck/dead pixels. And I'm not sure about this, but I'm thinking stuck/dead pixel would not be as visible in AMOLED.
But you should already be aware of the black blotches that you'll see on screen - that's pretty much standard with all AMOLED screens. Not a big issue, you wouldn't even notice it unless you crank up your brightness on a pitch black background in a dark room. For me that's a fair trade off for the superior quality and battery life that AMOLED offers.

Wasn't aware of the blotches, thanks for that. Just had a google and considering I never noticed it at all on my S3 can't see it being a prob. I have seen people claim that it is "mechanically" (or some similar word) impossible for an AMOLED pixel to get stuck, was just interested if anyone knew the details of such a claim if it is true.
Either way, judging how happy I was with the S3 screen I cannot see there being any problem on this one.

Sorry, corrected....I mean Amoled, not Exynos.

mattlovell90 said:
Hallo,
I'm coming from an HTC One, of which I had 5 as every single one had stuck pixels. As minute as they are in a screen this sharp, they still make a device feel 'tainted' out of the box and I couldn't put up with them. I have much more faith in Samsung, but can't help but feel a little apprehensive that my bad luck will continue!
Now, I have seen conflicting reports about whether AMOLED can get stuck pixels or not, or whether it is just dead pixels that can occur. Can anyone shed some light on this for me?
Also, I had a SGS3 but never noticed any display flaws at all. Has anyone had any issues with Galaxy products in the past?
Click to expand...
Click to collapse
LCD uses two transparent panels with liquid crystals between them. When light is flashed, the lens twist to allow the light to be pass/blocked to produce different colours. When this doesn't work like being clogged/stuck or something then you get a stuck pixel, but it's possible to make it better or fix by using pixel apps that flash light on the screen to make it refresh.
AMOLED is OLED pixels that each generate its own light. No moving parts. It is possible to get a stuck pixel but less prone than LCD. But if you do get a stuck pixel displaying wrong colour, it's pretty much defective I think.

OK.
So I just got my s4 from tmoblie and it almost seems I have a stuck blue pixel. I noticed it when I first plugged it in to charge it up before using. On the charging screen I can see a clear blue dot where there shouldn't be one. I can also see it briefly when my screen goes to sleep and I hit the home button to turn it on. I ran through some color screens but it doesn't seem to show up. Not sure if this is just some OS / device issue, or if its an actual defect of the screen.
Anyone ever run into something like that?

Sounds like a stuck pixel to me if it's blue.
https://play.google.com/store/apps/details?id=com.htc.chris.blackspotdetect&hl=en
Try this and see if you can see it to confirm.

WhiskeyHero said:
OK.
So I just got my s4 from tmoblie and it almost seems I have a stuck blue pixel. I noticed it when I first plugged it in to charge it up before using. On the charging screen I can see a clear blue dot where there shouldn't be one. I can also see it briefly when my screen goes to sleep and I hit the home button to turn it on. I ran through some color screens but it doesn't seem to show up. Not sure if this is just some OS / device issue, or if its an actual defect of the screen.
Anyone ever run into something like that?
Click to expand...
Click to collapse
Same here - just got my s4 from t-mobile, except my stuck pixel is red. Can only see it when screen is on, but black (on boot up or phone wake). Using the detectors from the market help to show it (if I set the screen to all black). Doesn't show up in a screenshot, so definitely hardware. Debating whether it's worth it to return for the one stuck pixel that I can't see most of the time. From what I've read, on AMOLED screens, it won't just go away eventually.

boardwak said:
Same here - just got my s4 from t-mobile, except my stuck pixel is red. Can only see it when screen is on, but black (on boot up or phone wake). Using the detectors from the market help to show it (if I set the screen to all black). Doesn't show up in a screenshot, so definitely hardware. Debating whether it's worth it to return for the one stuck pixel that I can't see most of the time. From what I've read, on AMOLED screens, it won't just go away eventually.
Click to expand...
Click to collapse
I've got the same problem..also a red one.its visible in the dark.when ther's daylight you hardly notice it but only knowing its there drives me crazy -_-
Sent from my GT-I9505 using xda premium

It dissapeared out of nothing!! Yesssss!!!!
Sent from my GT-I9505 using xda premium

Got a stuck pixel over the weekend. Luckily just barely within the 14 day window Doing a return/replace
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Yeah.. pink green tint is still here

After having gone through s6s s6 edges edges + and now my s7 edge and we are talking about a lot of devices I am not surprised to find pink green discolorations at part of my screen anymore.
All of them had it save for one. One device out of 20+. I will probably keep this because everything else seems fine but I can't believe we are still plagued by tints. Mine is an invariable pink and green on whites and greys.

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Are you talking about this tint problem? I see that all the edge have this and the s7 normal won't.

Braulio00 said:
View attachment 3675526
Are you talking about this tint problem? I see that all the edge have this and the s7 normal won't.
Click to expand...
Click to collapse
More or less. Bottom right corner of my screen is pinkish then mid is more yellow green then upper more pink. Non uniform whites

evak2979 said:
More or less. Bottom right corner of my screen is pinkish then mid is more yellow green then upper more pink. Non uniform whites
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Click to collapse
I know what you are talking about, almost every amoled screen have this uniform tint, Erica show in her YouTube channel.

Braulio00 said:
I know what you are talking about, almost every amoled screen have this uniform tint, Erica show in her YouTube channel.
Click to expand...
Click to collapse
If it was uniform I would be OK with it but mine is pink at places and green at others

evak2979 said:
If it was uniform I would be OK with it but mine is pink at places and green at others
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Click to collapse
And when you put in settings and do what I show in picture? The whites don't change the color?

Braulio00 said:
And when you put in settings and do what I show in picture? The whites don't change the color?
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Click to collapse
They do change on an angle but face first there are a few pink spots and a few green spots.it is not a rainbow on angle effect.

I noticed one edge is a bit pinkish than other. I had issues like this with LG and moto it's most likely a qhd display issue as I only had the issue on them types, it don't bother me that much but no phone will be perfect as long it's not standing out alot
Sent from my SAMSUNG-SM-G935A using Tapatalk

Braulio00 said:
View attachment 3675526
Are you talking about this tint problem? I see that all the edge have this and the s7 normal won't.
Click to expand...
Click to collapse
My edge doesn't have this issue

AngioNicholai said:
My edge doesn't have this issue
Click to expand...
Click to collapse
Nor mine

Mine does and here is a picture.
https://drive.google.com/file/d/0BydA4N8zkhqpbHJqRmFiYXM3Yzg/view?usp=docslist_api
Bottom, more pronounced at bottom right corner. No biggy but t since none else suffers from this I will ask for a replacement

I'm well aware of the issue ( I went through 7 Galaxy S6s last year and never found a perfect one), but my S7 edge is perfect, or at least close enough to perfect that I can't see any tints without going looking for them with a microscope, which I won't do.

neither does mine

I went through 3 s6s on this issue. My s7e does not have it. Pretty uniform. Was the first thing I checked.

I swear I am not going through a microscope. There is a big pink blotch on my phones bottom.
Also the phone arrived dead on battery. Wondering if that is the only one with that? Ordered straight from Samsung.

Either mine doesn't have it, or its so low for me to notice

I'm sure there will still be a few unlucky ones who have it this year, but by and large it seems Samsung has really improved the uniformity of their displays this year. Finally. Of course next year they will probably up the resolution to 4k and reintroduce the tint issues.

evak2979 said:
I swear I am not going through a microscope. There is a big pink blotch on my phones bottom.
Also the phone arrived dead on battery. Wondering if that is the only one with that? Ordered straight from Samsung.
Click to expand...
Click to collapse
No one doubts you I'm sure. Just doesn't seem to be as wide spread as last year.

zathus said:
No one doubts you I'm sure. Just doesn't seem to be as wide spread as last year.
Click to expand...
Click to collapse
Listen 3:38 minute this video, why all edge have discoloration on the edge? Because when you see the screen in the front the edge are the side, all edge have this problem and s7 don't.
http://youtu.be/R1GrWDMQFsM
3:38m

well known problem, and it drove me nuts in the past too:
read here:
http://forum.xda-developers.com/note-4/general/note4-amoled-screen-quality-t2906365
and here:
http://forum.xda-developers.com/showthread.php?t=2463786
as far as i can say its a "luck of the draw" if your screen is perfect or not. chances are high you get no "center cut" panel, so you will have non-uniform screens...

**Attn Gear VR users**

Please be advised, it is entirely possiable to receive an S8 or S8+ with dead pixels that are not visiable to the naked eye!
Please learn from my experiance with my S7 Edge; I purchased my GearVR a month after I had purchased my phone from another country... It wasn't until I tried my phone with my GearVR that I realised i had many dead pixels, in fact, the dead pixels are so bad, large and distracting when using my gearvr, that this is the sole reason why I am upgrading my phone to an S8.
Do yourselves all a favor, looks for dead pixels with your gearvr as soon as possiable.
Note; I was able to locate the dead pixels without a gearvr, using a lens from a google cardboard but the task is difficult, you have to hold the lens at the propper distance because you cant see them if it is not focused (obviously)
I think its ludicrous consumers only have 14 days to evaulate the condition of the phone and its display before they have acces to a gearvr to effectively evaluate the phones display for vr use...
Easiest way to check for dead pixels with gearvr, watch a bright film in the oculus cinema.
If you guys think dead pixels are bad on a monitor, wait until you have tried it in vr!

Thank you for the heads up. Will try asap. Does it happen more with a specific version? The S8 or S8+? Or both equally screwed?

Can just get a super high rez solid white photo (larger than the screen resolution) and look for them that way with a magnifying glass I imagine.

Will the S8+ fit or work in the previous Black Gear VR? I still have that one from the Note 7.

What you can do if you dont have new gearvr, it can happen with them all, its just the luck of the draw, this will end when one day sammy can produce displays that have high enough ppi that even in vr mode you will not be able to see dead pixels even if they are present.

nosympathy said:
Can just get a super high rez solid white photo (larger than the screen resolution) and look for them that way with a magnifying glass I imagine.
Click to expand...
Click to collapse
You can try that, have to get that focus just right. White background actually does not work! The ppi is so dense and the white is so bright, the whitelight bleeds into nearby dead pixels disguising them. Try to find a solid dark green or dark blue background (but not too dark) and yes, brightness should be max.
The thing is with the magnifying glass, finding a display with 0 dead pixels, that actually may be unrealistic... but finding a display without deadpixels that are within the gearvr field of view, that might be much easier (and more reasonable) task. Now mind you, in saying all that, remeber, were talking only about dead pixels that are only visable in gear vr mode.
If you get a phone with dead pixels that are visible to the naked eye, thats really bad!! Remember these phones have high ppi so what you see is not a single dead pixel but rather a cluster of dead pixels and a cluster of dead pixels can spread...
On my S7 Edge I have at least 20 dead pixels and as hard as I have tried, not one is visable to the naked eye!
The point im also trying to make; we really need our gearvr before the clock starts ticking for the "change your mind" policy samsung offer.

LIVEFRMNYC said:
Will the S8+ fit or work in the previous Black Gear VR? I still have that one from the Note 7.
Click to expand...
Click to collapse
Don't believe it fits

Update; were all going to have to improvise and get a magnifying glass to check for dead pixels, just found out that the gear vr will not arrive for about a month after phones arrive....

I seem to remember an app that will locate and highlight dead pixels. I used it several years ago, maybe on my S3?

cantenna said:
Don't believe it fits
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Click to collapse
Does fit, just tried it..
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:good:

Cass67 said:
Does fit, just tried it..
View attachment 4119406
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Click to collapse
Yup, just tried it myself. Software runs fine. It just made the fit though.

Are those 400 x 1440 extra pixels used at all in VR? My guess is no, because the optics and software were probably designed for 2560 x 1440.

rjscott2005 said:
I seem to remember an app that will locate and highlight dead pixels. I used it several years ago, maybe on my S3?
Click to expand...
Click to collapse
How about this one:
https://play.google.com/store/apps/...spotdetect&rdid=com.htc.chris.blackspotdetect

LIVEFRMNYC said:
Will the S8+ fit or work in the previous Black Gear VR? I still have that one from the Note 7.
Click to expand...
Click to collapse
It fits and it works well.

The s8+ wont fit the VR with a case huh? Im using a spigen tough armor and had to remove my case. Kinda sucks...