yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] RogerPodacter:
Unfortunately this phone will never be available in USA unlocked like it is in the UK, so I'll likely never have the chance to inspect a unit in person. Carriers will cripple this device so I avoid those variants.

Normally the percentage of dead pixels is low enough to not matter but it seems very high chance with this screen.

Guess I could take a shot though.
[Galaxy S II General] RyanZA:
I wouldn't assume that without some real evidence first...
[Galaxy S II General] tmj12:
Just checked mine and glad to report mine is ok..that was worrying indeed.
[Galaxy S II General] ankydu:
Can someone with a dead pixel please post a pic of his sgs2's screen.
[Galaxy S II General] ccrows:
That's probably gonna need to be taken with an external camera, since the dead pixel is gonna show up better in test mode...
[Galaxy S II General] ll_l_x_l_ll:
i actully posted something like this in this thread:

http://xdaforums.com/showthread.php?t=1070447

i will copy paste what i said as i also find it annoying

"ok so here in KSA, some dude imported the phone from UK. which would cost 475£ if it was ordered online from any website " tax not included since it not shipped within UK "

anyway, the next day the dude sells it. the phone box is opened. but the phone is new. no scratches, stickers still on it. and the price is.....370 £

i checked the phone. No piss poor yellow screen on high brightness. no dead pixels. everything is perfect BUT one.

the grid pattern on the screen. " which you can see if you turn the brightness low on a dark gray background " is abit visible. granted on normal use you cant see anything. but if you are in dark room and happens to have dark gray wallpaper, you will notice it.

now i honestly really like SG2. i think its the best phone out there. and this is the first time in my life that i said to my self " wow. an android phone that doesnt need roms to make things better "

but this grid thing bothers me abit. i mean. i am saying to my self that i can get this one and enjoy it. and in the future when there are plenty of this phone used in the market. i can always go check the one with better screen and grab it. but what do you guys think ?

please note that the phone is not available yet here. and if its, its imported as well from outside and its closed. no warranty. costs around 530 £ " because its new, popular, and the owner who imported needs to make money "

honestly. the moeny isnt the issue for me. the only reason i dont buy new Items because cases like this. yesterday my friend bought a new one. opened it and horrayyy ... a dead pixel. ofcourse i saw it he didnt, i didnt tell him about it so it doesnt bother him. because there is nothing he can do but sell it. and then he will lose lots of money. this is why i like to buy used " but almost new condition "

and if i have to wait for samsung to release it here, i might end up with super LCD and tegra 2. and i want neither of those.

now, my other question. on the display sittings, there is something called background effect. if i put it to " Dynamic " will that harm the super amoled screen in anyway ?

my current phone is the optimus 2x. which is a great phone. but honestly doesnt hold a candle in terms of screen and smoothness. " even though i really like Nvidia games alot. "

"
[Galaxy S II General] kreoXDA:
^^^ I do not have dead pixels or banding, just checked again. I MAY have them but I do not SEE them, so to me that means I do not have them :)

I think those dynamic/standard/movie settings are just color temperatures, nothing else. I doubt they would do make anything bad to the screen, but they could, because any light emitting electronic thing loses the intensity of emitting with time. The more it is stressed the more it loses of its lifetime.

Plasma screens and OLED screens have same problems. LCD have same problems too, but in them the whole backlight (the light emitting device) loses intensity.

I try not to leave a static picture on the screen for too long. Why? Either because I love my SGS2 too much, or because I love my Nintendo DS and want it to have some work too :)
[Galaxy S II General] ll_l_x_l_ll:
There is no single super Amoled display without banding. its the structure of the screen. its just less obvious on screens . BUT its always there.

But live walpapers kill the battery :/
[Galaxy S II General] kreoXDA:
Can you point me to a shot of banding so I can know for sure what to look for? I lowered brightness and can't see sh1t (or bands of sh1t) on a gray screen. Need an example, may be I am not looking for the right thing.
[Galaxy S II General] ll_l_x_l_ll:
ok. i will try my best.

download this wallpaper on your phone

http://www.yourfilebin.com/files/images/4ac99359a28aa2592x1944-Mac-Apple-Wallpaper-Dark-Gray.jpg

put the brightness on 10% +or -

maximize the left side of the picture " not the stupid apple it self " and check the screen. dont put your eyes close to it, you wont see anything. just look at the screen like you normally do. you should see " lines" on the screen. or at least SOME part of the screen. these lines vary between screen to another. some very visible. some not that much
[Galaxy S II General] kreoXDA:
Thanks!

I followed these instructions to the best of my abilities. Nether in Portrait or Landscape view I can see any bands. I zoom in on the left side by double-tapping the image. I then scroll the whole left side up/down, and even left-right, and I see no bands anywhere except for those bands on top/bottom of the image itself.

I actually have troubles seeing anything on that screen but my own reflection , because it is dark grey and brightness is set to ~10%.

I did not mess around with any screen settings, I still have "analyze image and adjust power accordingly" or whatever that setting is for the display.

So either I am not seeing this, or your unit is defective.
[Galaxy S II General] ll_l_x_l_ll:
knowing i went through around 15 amoled screens in my life and all have this issue. i would say its either you are not seeing it. OR you have a perfect one that will destroy my theory . and i dont like to destroy my own theory lol.

either way. i am happy with the device. i have a lot of good friends in the mobile market where they sell mobiles. i told them if they get any, they will call me. we talk on daily bases. so they can switch one for me later down the road if i found one better than mine. all i will have to do is back up my stuff.

its not like mine is defective or anything. its just the fact i am too OCD for my own good.

i check dead pixels. stuck pixels. bleeding edges. bands. un balanced screen color " yellow white screen on high brightness vs blue blue white "

and i have came to live to the fact that there is no perfect screen of all the above. its just not possible.

now if i get a better screen with less obvious banding " not that mine is very obvious to begin with, then i will replace my phone. if not. i will keep mine. its good. doesnt over heat or anything
[Galaxy S II General] RyanZA:
Not seeing any sort of banding or anything on my phone with that image, or any other...

I did get banding on my old SGS1 of course, because of the pentile display. But nothing like that on the SGS2.

Your story about the guy selling the phone for a loss is just a story of someone with no idea what he's doing : http://shop.ebay.com/i.html?_nkw=Samsung+Galaxy+S+II

You should have bought it off him and sold it on for a good bit of change. :)
[Galaxy S II General] kreoXDA:
I was just able to reproduce this!!!!!!!!! I had to UP the brightness to more than 50% to see some "bands" of grays of different intensity or hue to them! It took me one heck of an effort to notice these, and I think a couple of negative diopters. I am not worried about this - really hard to notice.

I was going to make a shot of the bands on the phone, but then I thought my camera would not pickup those subtle differences in brightness gradations.

I would take this anytime over an LCD with crappy viewing angles and grays for blacks.
[Galaxy S II General] TML1504:
went to my store today and swapped it: i had to test 2 other (sealed) devices to find one with a perfect screen...

but now i'm very happy!!:D
[Galaxy S II General] RyanZA:
With some squinting I managed to see the same - I think? Anyway I wasn't sure what I was seeing/trying to see, so I opened up the image on my PC and zoomed in. This is a closeup of the gray:

Wouldn't be surprised that you would get funny stuff with the gray on this image... not sure if this is proving anything other than AMOLED screens pick up artifacts in images easier than LCD? Doesn't mean that's bad, means the image has artifacts. ;)
[Galaxy S II General] kreoXDA:
Thanks! I have just opened up this post on my laptop, stood back 30 feet as far as my place allowed, and yes, confirming, this is the exact banding I am seeing on the phone. :cool:
[Galaxy S II General] irenic:
has anyone experience this kind of yellow / burn mark on this SGS II screen?

*it's the one at the bottom of the screen.. below go to google.com link
[Galaxy S II General] andrej.marinic:
well, I'm joining the club. dead pixel right in the middle of the screen. returning tomorrow to three.
[Galaxy S II General] kreoXDA:
nope! unless the screen is dirty, it is a defect I think. if there is no physical damage, exchange the phone right away.
[Galaxy S II General] irenic:
yeap no physical damage.. the phone is just 1 day old when i notice this
[Galaxy S II General] intruda119:
have you guys tried lcd test from the market. Its free and helps with finding screen issues.
[Galaxy S II General] ccrows:
"Dead Pixel Detect" works too, plus I even massaged a nasty one out on my Galaxy S...
[Galaxy S II General] NatTheCat:
And another one.

1 dead pixel on green screen. The problem i have is that i purchased the phone on ebay via paypal. Should i contact samsung as ive only had the phone 3 days.

Im so mad i love the phone the bits already but i know its there and not going to stand for it considering the price these phone are atm.

Any help much appreciated
[Galaxy S II General] PsychodelEKS:
I have one dead also, mid-right bottom of the screen. Pink-red seen on white/light grey.

Not much of a problem for me, but disappointing of course.

But well, it was 1.5 time cheaper (with delivery) ordered from UK then bought locally.

May be I would've tried to exchange it, if was bought locally, but sending it back (17 days to UK) to order another one (17 days more to RU), possibly, with the same problem - not a good deal anyway =)

It would also be good if those, who are unlucky, post country of origin (where the device was bought). There may be problems with batches to certain countries/resellers only.

My is from Clove UK.
[Galaxy S II General] redgreenlaser:
I hope this samoled plus won't have burn in like the older samoled
[Galaxy S II General] TML1504:
some amount of burn in is technology related and can't be avoided! because samoled+ is relatively new there is not enough experience gathered how good or worse it would be, we'll see that after few months of operation! but as i said, all amoled's suffer from burn in (or more precise: degradation in relation to usage)!
[Galaxy S II General] astma:
Yep .. i got my S2 last week (thursday). And i had not one, but approx 10 pixel errors, 2 - 3 very sharp, and 6 - 7 semi sharp. They were all red, and not located in a specific spot, but scattered around the screen.

I returned it to the shop saturday, and awaiting a new one!

Now i´ve got a nokia ......... :mad:

/Astma
[Galaxy S II General] AngelAbaddon:
Got one, but I only notice when I do the test, not noticed it in normal use even though I know its there, so going to live with it. Mind I might still swap out the phone depending on whether the CPU heat issue is general or a sign of a faulty unit.
[Galaxy S II General] jonny_ftm:
Yep, that background make it evident, also the darker left gradient

By the way, I find it hard to spot subpixels defect. In red, it seems like some discreet micro spots, that I also see in the SGS i9000. More discrete on green and absent in blue.

My SGS 1 and 2 don't have dead pixels, but I can't be sure of subpixels in red. Unless someone have a very good photo technique to take shots of them so I can compare. But definitely, red is not as uniform as blue, and that's even on my SGS 1
[Galaxy S II General] jassingh:
ive got a dead pixel to but doesnt show up on the screen test, the only time i can spot it clearly is on a grey background, then i can see the green dot

also downloaded dead pixel detect and only spotted it on one colour and they was the greyish colour, where it dims the screen.

in 2 minds about asking for an exchange just the hassle of posting it of and waiting for another and the fact that the technician might just do the screen test and say nothing is there
[Galaxy S II General] BinaryKhaos:
Hi guys.

Unfortunately this is a "me too". Got my phone yesterday and it has at least a dead green subpixel. It's actually only visible on a white background where I see a constant red dot which means the blue one must be defective too (?).

Nevertheless I am now considering the two options my dealer gave me: Keep it and get a 15% discount or get an exchange (that's an XOR btw). The problem is, I've found numerous reports of the "red pixel defect" and I'd bite my own *** if I get the exchange phone and it had dead pixels too. I'd have to keep either one of those two (or return both) but I'd have voided my chance for a 15% discount.

Is it all that common with Super AMOLED+ to have defective subpixels? I don't wanna start a neverending back and forth with my dealer until I get a proper phone. But if it's really a exception, chances are I'd get a subpixel free phone.

Hard decision. I'd really appreciate some good thoughts on this. Thanks. :-)

So long,

matt

PS. The dead subpixel is in the right part of the centre area.
[Galaxy S II General] robin73.:
Well maybe I'm just unlucky but I exchanged mine because of the blue screen thing and a dead pixel and now I got one with again a red spot in the center right of the screen. So I'm a bit discouraged to exchange it again now fearing it is just inherent in the screen.
[Galaxy S II General] Beefheart:
No, that's just bad luck.
[Galaxy S II General] diehard2222:
thanks guys not getting this phone.
[Galaxy S II General] TML1504:
same here - and i did already 2 exchanges.

as you mentioned - only visible on grey, which means that the green sub-pixel "fires" to strong.

but i can live with that, it's almost not noticeable... before i had one dead green sub-pixel (which is the worst - because the human eye is most sensitive with green colors), then in the shop when i went for a replace the dealer had to open two brand new boxed devices, the first one had a red one directly in the center of the screen!
[Galaxy S II General] BinaryKhaos:
That is actually not the first time I read this. I've seen this elsewhere also that people went to the shop and had to open more than one box to get a phone without a pixel error. This really has me worried because imho the odds are rather slim to get several phones in a row that have one or more defective pixels.

My guess would be that Samsung either has not yet perfected the manufacturing process and the yield is not as good as it should be, so they are letting more "defective" screens get through than they should... or it is simply (like others said earlier) that the oled technology is not yet as mature as the lcd one. I guess it's somewhat of a combination of those two... but who knows.

Usually I'd have said the same but I'm starting to think that you really are more likely to get a defective pixel with the SGSII than usual. There is a thread over at the german amazon which also deals with this. And there are reports in other forums as well which I found while googling the net.

Oh well. I guess I should either return the unit and get a different device altogether or take the 15% discount and name my little red dot Charlie and make him my personal friend like someone did earlier here. ;-) And it has a nice learning effect too for a perfectionist like me that not all things need to be perfect and one can indeed live with things like that... :)
[Galaxy S II General] djet:
You guys must be lucky with having ones of dead pixels. Mine beats them all with a deadly black-on-blue scar:

http://imageshack.us/photo/my-images/821/sgs2deadpixels.jpg/

(the shot is blurry, in reality the stripe looks rather sharp).
[Galaxy S II General] mur76:
get it changed
[Galaxy S II General] TML1504:
:D:D:D

btw, wise words about "perfect things", in my honest opinion
[Galaxy S II General] Jmarley:
A word of advice Guys !

Their is barely any lcd type displays out there that will be 100% prefect in this instance we are talking about 1,152,000 sub pixels for them all to be 100% correct in intensity and function realistically just isn't gonna happen!

I would recommend testing with a full white and black and if there are no glaring faults call that it. If You have good eyes and start checking RGB and shades You stand a good chance of getting dissapointed for no good reason as You will never see the faults in normal use
[Galaxy S II General] budco2000:
had this happen a couple years ago, best buys policy was 6 dead pixels, so i instead just said the phone shut off 6 times in 2 days and i wanna another, and i don't even mention the pixel
[Galaxy S II General] Cantor2011:
DEAD PIXEL! Man, I'm so upset that I had to register and share my frustation! I just bought a galaxy sII from CWH in UK and the first thing I noticed when I plug it to charge? A f****** dead pixel. A blue dot right of the screen 1.5cm down. I don't care about their policy on dead pixels. It coud be 1, 2 a whole row I will have my phone replaced and they better have another one in stock. I've paid for 1,152,000 pixels and I want all off them!
[Galaxy S II General] BinaryKhaos:
So, received my replacement today and I was lucky, it's perfect- at least in/with my eyes. :-)

Unfortunately the screen guards I tried: not so much. Currently it is running bare and I am actually considering keeping it that way- which would be a first for me. But that's off-topic I guess... so...

Hope things clear up for everyone...
[Galaxy S II General] downwiththebanksters:
I agree with cybermessiah...wait until it comes to your country. Don't leave the shop until you've tested it. I bought my Pre from a grey market dealer in Spain. WHen it got here I found 2 dead pixels right in the center. Not earth shattering, but a pain in the Pigu for sure! My research today says the SGS2 will come to Taiwan only to Samsung dealers, not carriers (or at least Chunghwa) on June 15. The Samsung dealer didn't even know about the 2 potential different tegra or exenyos, so couldn't say...but showed me a Chinese website (undated) showing exenyos.
[Galaxy S II General] ams84:
I found the same in my device and I've got another one

Sent from my GT-I9100
[Galaxy S II General] hyperX-:
I got also 2 dead pixels on video recording/taking a photo, you see that on low light conditions. :-(
[Galaxy S II General] RogerPodacter:
the rate of dead pixels on this phone appears to be extremely higher than other devices. must be the new fab process for the new pixel layout being harder to produce.
[Galaxy S II General] Limpperi:
green dead pixel here... very annoying :( just got the phone and i'd return it but finland is sold out of gs2
[Galaxy S II General] shaevy:
I got an answer from Samung(Germany/Austria) today regarding their stuck/dead pixel policy.

Their answer:

German:

English:
[Galaxy S II General] maranello69:
wow, i can't believe how many people got this issue, at first i was looking at the screen and thought it was a piece of dust under it, but i guess this too is a dead pixel...

it's just one and i can see it in all the screen test colors (red, green, blue), it looks very sharp, like its glowing or something

i got an app from the Market, Pixel Fixer, but will this work on samoled+ screens?
[Galaxy S II General] sylvesterrr:
I'm joining this club. Yesterday I noticed a stuck (?) pixel on my SGS2. It's only visible when the background is either white or green.

I've tried to fix it with Pixel Fixer from the Market, but it didn't work... I didn't expect it would work but I wanted to give it a shot anyway, so I'm not disappointed. ;)

Should I live with it, or request an exchange? The stocks are pretty low here in The Netherlands, I don't want to miss my phone for a few weeks... I bought it without a contract (and paid € 479) for this phone.
[Galaxy S II General] jonsmith709:
I had one green pixel, hardley noticeable but returned it to p4u as I purchased it sim free. Happy to say my new one is fine:)
[Galaxy S II General] :
I don't own SG2 but I would like to share my experience regarding a dead pixel I had on my handset.

I noticed a blue dead pixel on my handset and I was really annoyed by it too. I called the support line of my handset manufacturer and they told me it will take 10 days to repair it. Not being a good choice for me I decided not to send out the phone.

Later on the dead pixel magically disappeard. Two things may have contributed to self-curing. I remember I had the phone in my hand and was running very fast and I could feel the accelerometer sensor was all over the place. The other thing happened to the phone was upgrading its firmware.

Most likely the latter event was the cause of the cure. In case you cannot return your phone then from my experience I can say there is a small hope that your dead pixel is not a physical or a permanent damage.
[Galaxy S II General] naddie:
I just got mine, and found nothing using the red/green/blue/white/black tests. I did find 4 green dots when viewing dark gray.

Also, in complete darkness and just showing black (contrary to what everyone says, the screen still has some light when showing complete black), I can see dark lines and marks as if they were underneath the panel.

I'll see if I can take a photo.

I bought mine from an Amazon seller. No refunds on phones, but 14 day exchange only. I wonder if they will honor this for dead pixels.

I'm afraid to exchange it to get something worse. I don't have the yellow tint.
[Galaxy S II General] Ingvarr:
Have you thought that "everybody" says that black should be _total_ black because it this way for most of people? I myself regularly use my phone for reading at night with black screen scheme and I could 100% assert that black parts of screen should emit no light at all - they stay pitch black.
[Galaxy S II General] Harvin Dhillon:
Mine was replaced with a camera focus issue and then the replacement had a dead pixel. Replaced it with a new set and seems to be fine now.
[Galaxy S II General] naddie:
Odd. It's the same with my SGS Vibrant. Maybe I'm more sensitive.

When there is something on the screen (text for example), the blacks looks like they emit no light. If you look at a picture of something completely black and fill the entire screen, you can actually see a bit of light. Be in complete darkness and let your eyes adjust to the dark room. Then try it.

Edit: I'm not the only one who sees it. http://xdaforums.com/showthread.php?t=744271

Anyways, I spoke with someone at Worldwide Distributors, and they said they don't do exchange because they implicitly say there is no warranty. They referred me to Samsung instead.

Now I can live with it, but for a $700 phone, I was hoping I didn't have to. Let's see what Samsung has to say. I'm afraid they won't honor any warranty since the phone is out of it's intended country of release.
[Galaxy S II General] Ingvarr:
The screen is completely black as long as RGB 0,0,0 background is displayed and no text on screen at night, dunno. Maybe it happens for some people. Or they just don't test with properly true black background (like with Dead Pixel Test). Or it so low brightness that you have to sit in pitch black room for ages and even then only people with very sensitive eyes will see it ;)

But I neither see any of these "Yellow Stains". I can easily see some "scanlining" on low brightness though.
[Galaxy S II General] rj3005:
There is some light emited but any lcd is like a lighthouse compared to it. (And its below the threshold that my $1000 spectrometer can measure)