So i've heard that the S-AMOLED and S-AMOLED Plus technology has "Perfect" Blacks! Like the Blacks don't even "Light-up".
Is it true? Or is it just a marketing thing? :/
Try this and tell me what do u have?
Turn off all the lights in the night and then view some BLACK picture. U'll see that the Blacks are kinda "Greyish" :/
And there are some pixels that are perfectly black.. but they're just Random... :/
known "issue" on lowest screen brightness
Ohk.. So its not "Completely Black".
theres also another problem with it aswell... When I view some pitch black picture in a completely dark room. I see some small rectangular shapes that are "Pitch Black" in that Greyish background. I cant snap a picture of that unfortunately but u kinda get the idea. Can someone try this with there own S3 and report me? :/
It'll be quite helpful
Is well known issue.
http://forum.xda-developers.com/showthread.php?t=1703086
Sent from my GT-I9300 using xda app-developers app
Mine does the same thing: darker black splotches when viewing a black picture on the dimmest screen setting in a dark room.
Fortunately I don't often find myself looking at all-black images in the dark. It's hardly a major issue.
this issue is quite common, even on iPads, Motorola etc...apparently it is the adhesive within the layers of the AMOLED that causes an "ink" mark when screen displays black images within a dark environment...nothing is actually wrong with your scren, mine has 2 very small dots...while my other friend has had his replaced because the issue was far more prominant...so there is a possibility of claiming warranty? but this will depend on the country/retailer/etc...but always worth giving it a shot if you cant stand this issue...but yes, earlier batches, the issue was far more obvious...but later ones are better but information from other XDA threads suggest that you WONT find a unit without any marks...period.
Related
Hello XDA,
I've searched around for this problem a bit, and it seems this issue hasn't been brought up anywhere. If it has, then I apologize.
The S2 has an awesome display with great colors, blacks included, but I noticed this issue one night when I was watching a film on my S2. When the display is showing black/dark images you can clearly see what appears to be glue smudges all over the screen, especially along the rims. It is only noticeable when there's little to no other light in the surrounding environement. Increasing brightness seem to worsen the problem.
It is hard to describe and very difficult to capture on camera but I made an attempt. I can't post links yet it seems but here's an imageshack url:
img842.imageshack.us/img842/5420/blotches.jpg
The image was taken with a Canon 450D with 20 sec exposure (hard to focus when it's that dark I'll tell you). Edited slightly in photoshop to cut down the size.
Here you can see the general color of the screen (gray-ish) and some of the blotches of (what I'm guessing is) glue in the back. If I had to guess I suspect the blotches might come from the capacitive touch layer of the screen. Is this an issue or is it to be expected on phones like these? It's not a major problem but it's actually quite annoying when you're watching a film/youtube clip/playing a generally dark game or whatever. Should I return my device? I've used it for just about a week and a half.
Thanks in advance for any help.
i have this too, its the AMOLED display. you can turn the screen off and on and you'll see it go off n on. not the sgs, but amoleds generally. my omnia HD had this too (1st gen AMOLED)
the blacks are not 100% black i say
Im having this too, nothing to worry about this as it doesnt disturb the beautiful display of this mobile.
There are a few threads out there that have touched on this issue but none as far as I can see that deal with it directly.
The problem comes when you display a pure black screen in low light conditions. It shows that the AMOLED screen is actually grey / blotchy / cloudy instead of being pure black. Initially I thought mine had fingerprints or smudge marks on it, until I realised they were behind the screen. I guess I might have got a phone with a screen that was replaced, but the amount of people who have also reported a similar issue leads me to believe that it might be a manufacturing default? The blotches / clouds on the screen dont change, but exhibit a random formation as one would expect from a defect. It is also possible to see a very faint outline of light running along 3 edges of the screen.
Naturally this is a situation that doesnt reveal itself very often. But I as I use my phone a lot at night, especially reading ebooks or watching films, you start to notice it more and more where you have large expanses of empty black screen.
What I would like to know is how many people have got screens that exhibit this behaviour and how many of you have sent them in for service or had them replaced?
Is it a common issue and something that is to be expected from this type of screen?
You can test if yours has this problem using 'Screen Test' (its free) from the market place. It cycles through solid colours and patterns every time you touch the screen.
Just do it in bed with all the lights out P), give your eyes a few seconds to adjust and see what your screen looks like displaying pure black.
I'm very interested in everyone's experiences and any input or information you have.
Thanks everyone in advance!
ps: I came from a ZTE blade (OLED) which has a uniformly dark grey background when displaying pure black. I kinda expect this as it is a budget phone (albeit with a better than budget screen), but I didnt expect the SGS2 to be quite as bad.
Use "screen adjuster" from the market and set contrast to -60
i have never seen this black low light screen defect. but i am asking you people if any of you have noticed that ugly blurry shadows which are perfectly visible with low light, on white backgrounds especially. they look like marks above the actual display and make high quality images look like low resolution.. it is annoying as hell..
I have this. Noticed it one night when my phone was switched off and charging.
Sent from my GT-I9100 using XDA App
I also have this, noticed the first evening i used the phone...you can notice this during the screen wake delay, or when in a call if you cover then uncover the proximity sensor...don't know if it's a defect but sure it bugs me, i know many won't notice it and will say they don't have this...i will add that if u look carefully to the screen dimmed at lowest brightness in a low light (buy not dark) environment, like early morning, you'll see some "interferences" behind the image, also the darker/yellower left half screen is still visible in these conditions
These things shouldn't be there in a 500€ phone
Sent from my GT-I9100 using XDA App
Thanks for the feedback already.
@elmerendeiro: I have also noticed some 'interference' lines on my phone from time to time. I did a bit of research and it seems when your phone's brightness is set around 25 - 30% it picks up interference from either the wifi or 3g radio. Notch the brightness either above or below this level and you wont see it anymore.
I agree with you when you say we shouldn't be having these problems on such an expensive phone.
It bugs me too - if it wasnt for this i'd have to say it would be an amazing phone
Might give the Samsung service center a call and see if its something they're aware of and if they are replacing screens with this problem?
Having played with my S III for a day now, I've been mighty impressed by the vibrancy and contrast of the screen, however, during the evening, when the lights were off, I couldn't help but notice something peculiar.
To be clear, I have no clear dead or stuck pixels and the issue occurs when the device is on, displaying a black screen (though I first noticed it in video playback that had black borders). I'm unable to capture a shot so I'll explain this as best I can.
When on a black screen, there is a faint glow, when looking closely, there are patches of very dark segments throughout the screen that are true black, as opposed to the general glow of the device.
Does anyone else experience this? Is it normal?
Many thanks
Do they look like black splotches that can only be seen when viewing a black screen.in the dark? That sounds like the same problem all vitas have, something that is unfortunately a side effect of oled screens. My current phone, a samsung wave, doesn't have this issue though I've read that some other phones like previous galaxy s models produce the same problems. Bummer if that's it since I hated it in the vita
Scribe said:
Having played with my S III for a day now, I've been mighty impressed by the vibrancy and contrast of the screen, however, during the evening, when the lights were off, I couldn't help but notice something peculiar.
To be clear, I have no clear dead or stuck pixels and the issue occurs when the device is on, displaying a black screen (though I first noticed it in video playback that had black borders). I'm unable to capture a shot so I'll explain this as best I can.
When on a black screen, there is a faint glow, when looking closely, there are patches of very dark segments throughout the screen that are true black, as opposed to the general glow of the device.
Does anyone else experience this? Is it normal?
Many thanks
Click to expand...
Click to collapse
Yup its on all amoled devices starting from sgs 2 but its less on some and more on others but still I don't think it hinders usage of the mobile
I have this too and find it quite annoying (even though you barely see it, only when displaying a black picture and in dark environment).
Would be interesting to know whether really all S3s have that.
Arg, curses! Yeah I didn't notice it on my SII which is why it was such a shock on the SIII. It's only noticeable in a pitch black room but sadly now I know it's there I fear I'm going to be picky
I hope it's not the same problem existed on all galaxy tab 7.7 models which you could see circles and spots on a dark background in a very dark room. My nexus s and sgs2 didn't have it but it was so annoying (for me) on tab 7.7 which I returned it and never got another one. Take a look at this thread: http://forum.xda-developers.com/showthread.php?t=1463622
I hope it's not on all models of sgs3,I'm planning to get the 64gb model...
NeXusS i9020T - Slim ICS V3.8 - Matr1x V19.5
Speculation and more speculation... for once I would enjoy if people posted some evidences when complaining about an issue with this phone..
had this uneven black and white patches in my sgs2. it didnt bothered me much frankly
I'm wondering if this is due d
To the difference between amoled plus and amoled(pentile)....pentile screens can look blotchy, more so than the amoled plus screen
From my nexus tappin the talk
<edit post successful>
What is so annoying about it ? I bet that no one is looking at a black screen for more than a few seconds in a completely dark environment.
Try this: light up a few pixels on the screen and tell me if you still see the patterns. I bet you don't! S2 has the same "problem" and the thing is that if you switch to landscape the patterns dissapear and re-align. I guess it's how the amoleds work.
LeviathanPT said:
Speculation and more speculation... for once I would enjoy if people posted some evidences when complaining about an issue with this phone..
Click to expand...
Click to collapse
If you check the pics in the thread I posted you can see many pics of the problem on tab 7.7. It needs a DSLR with good exposure abilities to make the problem viewable on a pic ( though it is noticeable with the eye in the aforementioned situation ). If the problem is as widespread as it was on tab 7.7 this thread will be explode with pictures and complaints. *fingers crossed* that's not gonna happen hopefully.
blueseeker said:
What is so annoying about it ? I bet that no one is looking at a black screen for more than a few seconds in a completely dark environment.
Try this: light up a few pixels on the screen and tell me if you still see the patterns. I bet you don't! S2 has the same "problem" and the thing is that if you switch to landscape the patterns dissapear and re-align. I guess it's how the amoleds work.
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Click to collapse
If the issue is as bad as it was on tab 7.7 it is noticeable on any "dark" background, not only completely black backgrounds, like when you're viewing a dark pic or during dark scenes in a video or movie, I could even notice it in TW Settings.
NeXusS i9020T - Slim ICS V3.8 - Matr1x V19.5
Po0yAn said:
If you check the pics in the thread I posted you can see many pics of the problem on tab 7.7. It needs a DSLR with good exposure abilities to make the problem viewable on a pic ( though it is noticeable with the eye in the aforementioned situation ). If the problem is as widespread as it was on tab 7.7 this thread will be explode with pictures and complaints. *fingers crossed* that's not gonna happen hopefully.
NeXusS i9020T - Slim ICS V3.8 - Matr1x V19.5
Click to expand...
Click to collapse
I think this is still the sgs3 forum, want I need is proof of those issues on a sgs3..
Have the black blotches on my samsung infuse
Sent from my Samsung Infuse running AOKP.
LeviathanPT said:
I think this is still the sgs3 forum, want I need is proof of those issues on a sgs3..
Click to expand...
Click to collapse
I can assure you, I have this problem on my sgs3. Will be difficult to "prove" though as making a picture of it should not be easy.
I have it too. Not too much but they are.
Sent from my GT-I9100 using Tapatalk 2
Same.. Noticed it last night in the dark. Did not have it on my s2. Guess i wasn't so lucky this time
Scribe said:
Having played with my S III for a day now, I've been mighty impressed by the vibrancy and contrast of the screen, however, during the evening, when the lights were off, I couldn't help but notice something peculiar.
To be clear, I have no clear dead or stuck pixels and the issue occurs when the device is on, displaying a black screen (though I first noticed it in video playback that had black borders). I'm unable to capture a shot so I'll explain this as best I can.
When on a black screen, there is a faint glow, when looking closely, there are patches of very dark segments throughout the screen that are true black, as opposed to the general glow of the device.
Does anyone else experience this? Is it normal?
Many thanks
Click to expand...
Click to collapse
Yes, had the same problem: http://forum.xda-developers.com/showthread.php?t=1686633
lostsoul said:
Yes, had the same problem: http://forum.xda-developers.com/showthread.php?t=1686633
Click to expand...
Click to collapse
so your exchanged model doesn't have this issue? See at least we can be sure that it's not effected all the models like it was on tab 7.7?
NeXusS i9020T - Slim ICS V3.8 - Matr1x V19.5
It's impossible to see in the light/day time.
You need a pitch black room, with screen test app turn to black screen,,,slowly the wriggly lines and patches will show up. It is annoying yes - 2 phones were exactly the same defects. Each phone had it's own wriggly lines etc.
Tried to take a picture but it's nearly impossible.
Hello
I'm new to android and just bought my s3 so forgive me if it's a stupid question
Whenever I watch a movie, there are two or three black spots. I feel like they are dead pixels. It doesn't show up on a white background nor on my ics inspired background but now I notice it a lot during a movie especially if it's a dark colored movie(darkness and all). Are these dead pixels? Is there a display app which I can use to display pure different colors and find out?
Thanks in advance
Sent from my GT-I9300 using XDA
Spots? If what you are describing look like smears on the screen then no, I think this is an unfortunate defect with oled devices when black is viewed in really dark environments. My phone (not an s3 but uses amoled) exhibits the same problem and my PS Vita shows it very prominently.
A dead pixels is just a pixel (pretty much a dot on the screen) that is stuck in 1 color no matter what's being displayed onscreen.
There's a test screen, just dial *#0*#
However the black spots on dark background when your screen is on minimum brightness (e.g. in darkened rooms) are well-known issues plaguing AMOLED.
There are several threads around here describing them and their possible cause, and at least one developer has announced working on a screen tweak solving this and other typical AMOLED issues.
Yeah it's only noticeable on dark backgrounds with low brightness. I downloaded display tester and ran the dead pixel test and the smears were only noticeable if I looked super hard during a black background, not in blue or red or yellow nor gray. So no dead pixels right ?
Also thank you so much !
Sent from my GT-I9300 using XDA
omgbuffguy said:
Yeah it's only noticeable on dark backgrounds with low brightness. I downloaded display tester and ran the dead pixel test and the smears were only noticeable if I looked super hard during a black background, not in blue or red or yellow nor gray. So no dead pixels right ?
Also thank you so much !
Sent from my GT-I9300 using XDA
Click to expand...
Click to collapse
If you didn't notice any stuck dots, then your phone is good. As for the smears, pretty much everyone has them. I guess you have to be extremely lucky not to have them (that, or you just haven't noticed them yet so it doesn't bother you). The software solution pointed out above sounds interesting though. Will be watching that
About Dead/Stuck pixel on OLED Device Display
I have a S3 GT-9300 that I use daily, the other day I dropped it on a hard surface and a single shiny green stuck pixel appeared on the bottom left corner of the display, it was a bit of an eye sore really, But I'll share my simple FIX if its a related problem like mine was
I thought if the drop caused it, then a related solution may fix it, so I simple activated display and went to the home page.
then I turned the display facing my palm and held the device carefully at the top end and slapped it several times hard into the palm of my hand where the pixel problem area was. then stuck pixel went away...
I hope this works for you too :good:
Hello,
Im Using Amoled Smartphones since the Galaxy (i7500). They all were always showing at 100% Brightness for Black parts of a picture a true Black like the Display is OFF.
If you put the Brightness to 100% and go to an complete Dark Room and open an Black Picture you see some Gray/Yellow Tint on the Screen. You can compare this good by locking the phone to see the Screen OFF and than unlock it to view the Black Picture again. You should see a huge difference. Hope to hear from your experiences.
I've seen that already on the S1 when abusing it a a nightstand clock.
Best guess I've heard is that the (AMO)LED screen leaks some luminosity to other pixels in the background which is then visible as a very faint glow.
However I rather believe that the AMOLED are not truely off but rather get some leak voltage and thus have a very-very-very faint glow (like one photon per second xD )
That would explain the black spots most people seem to mind on AMOLED when on minimum brightness with a black screen; they are truely off or without insufficient leak voltagage (LED's requie a minimum voltage to work).
AMOLED production is somewhat complicated (very thin layer of silver as a power source and a control-layer) so I wouldn't be surprised if the above is true.
Nothing is perfect, especially not a rather new technology.
What else did you expect from a backlit display.
jbadboy2007 said:
What else did you expect from a backlit display.
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Click to collapse
It's not backlit is the point.
Correct me if im wrong here but amoled is, by design, not backlit.
Sent from my LG-P920 using xda premium
Yeah so I was wondering why it does this little/ hard noticeable yellow/gray tint on a dark room...
There is no Backlight... Unfortunely i Sold my Galaxy S2 so I cant compare it.. But im Sure it wasnt like this
I have this on my gsiii and also on the Gnote... I think is due to the pentile screen
I had this on my Fascinate but realized it wasn't a big issue. Definitely more noticeable on my Gnex but it also has more pixels so that could be why you see more light. I wouldn't call it a problem because the majority of the time it's absolutely unnoticeable. Each pixel has so have some sort of voltage to be ready to react to changes. Turning off/on completely each time light is needed might waste battery.
P.S. I'm noob at displays but that's my theory.
Zacisblack said:
I had this on my Fascinate but realized it wasn't a big issue. Definitely more noticeable on my Gnex but it also has more pixels so that could be why you see more light. I wouldn't call it a problem because the majority of the time it's absolutely unnoticeable. Each pixel has so have some sort of voltage to be ready to react to changes. Turning off/on completely each time light is needed might waste battery.
P.S. I'm noob at displays but that's my theory.
Click to expand...
Click to collapse
I was curious about this issue as well. It's my understanding that OLEDs do not produce any light in their inactive state.
Regarding your theory, I wonder if it's similar to plasma displays. Even though plasmas are capable of true black (they do not use a backlight) The individual plasma cells have better response times if they aren't fully discharged on blacks. So they have a faint glow that comes from the low power they are using to keep the pixel charged up and ready to go when a color change is needed.
This actually costs a little power though, rather than saving it. So if thats what they are doing, it is for screen quality reasons so that movies and other things look better.
Did some Googling and I couldn't find much information, but there is talk of delivering pre-charge voltage to the OLED pixels to improve response times. So it could be that they are indeed similar to plasma displays in that respect: Capable of true black, but the benefits of not using true black are too good to pass up.
Are you SURE the picture is actually true black? By that i mean pure 100% black in an uncompressed image? If not then you cant expect the phone to display true black. A JPEG of black may not be enough.
My screen it totally off when displaying true black.
I can confirm the screen showing a faint glow on S3 with a true black screen.
Use Firefox with Fullscreen extension (Chrome and the default browser don't seem to have fullscreen mode yet) and go to http://d4f.pf-control.de/black.html
That's rendered on the phone so we can expect it to be the blackest black an app can produce, however in a (very) dark room you'll see a very faint glow coming from the screen and you'll be able to see the black spots (truely black) that people keep complaining about.
The theory about it being a precharge voltage does indeed sound plausible since LED's have a certain reaction time which unfortunately cannot be compensated by e.g. Overdrive as is used in LCD screens.
Note that the S3's "black" is still far better than any LCD.
No mine is still jet black, no light at all.
Go to a COMPLETELY dark room and make sure the screen is actually turned on when on the website (not timed out).
Then take a long-exposure photograph of your phone (still make sure the screen is turned ON!).
I don't have a long exposure camera, but the room is completely dark and my eyes have adjusted, there is no light.
All sgs3 ( as sgs2) screens emit a very week glow on a black pictures ( with the screen on )
Sent from my GT-I9300 using xda premium
It would seem to me that the 'ink spots' many have are not overly dark spots at all, they are what the screen should be. My screen emits no visible light when displaying a true black image, at least nothing my eyes can see, even at the edge of my vision field where light cell are most sensitive. My screen is on maximum brightness.
My screen has no patches, no streaks, no spots, no pink or excessively blue tint. I guess i have a screen thats as near to perfect as they get.
yes there is very faint glow indeed making the screen a bit greyish instead of pitch black
Excuse me if I am being naive but where is real life use would this ever be a negative impact?
jfenton57 said:
Excuse me if I am being naive but where is real life use would this ever be a negative impact?
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Click to collapse
no negative impact, but still raises a question "why so?"
jfenton57 said:
Excuse me if I am being naive but where is real life use would this ever be a negative impact?
Click to expand...
Click to collapse
I don't think anyone is trying to paint it as an issue that needs to be resolved. It's more of an odd technical mystery rather than a real problem. The blacks are still extremely deep on an AMOLED, just like with Plasma it puts LCD to shame in that department.