yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] EarlZ:
Then try to use a 000 black, Ive been down that image test way back during the first generation SAMOLED. Lit blacks.
[Galaxy S II General] Nikotiko:
I think I should do this clean black test. Still a bit disappointed to find out that it really isn't what it looks like.
[Galaxy S II General] EarlZ:
Its not really a disappointment if its lit, whats disappointing is that some phones have white blotches on its blacks and others have a higher degree of light bleeding.
[Galaxy S II General] Logi_Ca1:
I did the test yesterday, and to my surprise it is like what the OP said: The screen is not truly black but is slightly lit.

Which really confused me because I have an experience similar to another poster of not being able to tell the screen from the border.

I wonder if this is something inherently hardware, or if it can be fixed in a future software update.
[Galaxy S II General] Nikotiko:
When there is white text or something bright enough on the screen, the border or the screen and bezel is impossible to tell apart.
[Galaxy S II General] EarlZ:
If anything else other than a black is displayed on the screen even on a dark room its quite hard to tell where the screen border is at due to the added illumination, but once its all black you are supposed to see a little illumination from the blacks, its 100% normal and expected. Again whats not normal is random patters or splotches.

This is one of the quality issues ( despite how minor to some ) should be reported to the service center so that sammy can improve their quality control on the S2.
[Galaxy S II General] mib1800:
Lucky for me, mine doesnt have white patches and yellow tint. Can it be those patches are caused by burn-in effect?
[Galaxy S II General] TML1504:
due to the way how amoleds work there has to be a VERY SMALL amount of current when the screen is on. if you do not see the VERY SMALL amount of light then i would begin to feel worry about your eyes if i were you, especially if you are a graphics designer... ;)

when the screen is on all amoled cells are on "standby", and emit a very small amount of light which can only be seen when in complete darkness, with nothing else displayed on the screen. even a small amount of pixels "lit" will accomodate your eyes and you wouldn't be able to see the standby-emitted amount of light.

this could be calibrated down to a level almost zero, but it never can be actually zero!

about contrast ratio:

sorry, but what you say about this is also wrong:

tinting has nothing to do with contrast ratio (in this case):

if black would be absolute black (light amount emitted=0), then even the slightest amount of light displayed

when "lit" would lead to an infinite contrast, because even 0,1/0=oo

got that?
[Galaxy S II General] seshmaru:
Your not getting the point of the tinting, the screen has a different tint than the rest of the bezel, any miniscule source of light in the room can affect the look of your display, unless you are testing this in absolute darkness you can't make any claims.

Besides that even with every pixel on "standby" an AMOLED and SAMOLED screen should have 100% uniform lighting across all cells. And even if it doesn't have 100% uniform lighting across all cells it should be within bounds the human eye cannot notice.

If yours does not display a 100% uniform lighting then it's a defect, now not a defect in my case I would worry about too much, it's like looking for a backlight bleed on a backlit panel in a pitchdark room, chances are you'll find a tiny bit somewhere.
[Galaxy S II General] EarlZ:
Im not sure, one XDA member speculates that its a finger print/smudges behind the screen. As for the yellow tint, as always we would like to see samples of your screen with the required conditions for easier sorting and identification via photo so we can tell if samsung has changed anything manufacturing or quality control related, please post picutres on the other thread. Thanks!

Putting the numbers game aside, he cant see determine the lit blacks from a screen lock so his credibility of a self proclaimed graphics designer doesnt mean anything and his equipments are not sensitive enough to see the changes or he just pretended to test them ;)

So you initially claim putting your profession and equipment at state for what its worth then you recant your statement a few posts after:

And now you say that it should have 100% uniform lightning??

Now the 2nd time around you are actually correct, there is a noticeable difference between displaying a 000 wallpaper and a locked sceeen (screen is off) in a total darkness room.

Yes it should be uniform enough that your eyes cant tell if there is a variance in lighting, my first 2 SAMOLED based phones had uniform blacks, the first 2 S2's I had also had uniform blacks, the 3rd one is a bummer.. The intensity of this "lightbleed" differs from phones affected and even the form/pattern is different. Mine is visible when Im viewing movies in a dark room, most prominent is the edges looks like they have backlight bleeding on dark scenes.
[Galaxy S II General] EarlZ:
-please delete-
[Galaxy S II General] ZhuraYuk:
LOL people, there is touch screen up on display, it has some current runing through it and it's create electromagnetic field which interferes with organic material in pixel and they emitting light. You need to power off touch screen to get full blacks.
[Galaxy S II General] safeelhd2:
If i want to see an all black screen, i turn the screen off.

If i want to see light, i turn the screen on.

Simplez!

:D
[Galaxy S II General] EarlZ:
To make a consistent testing why not use the *#0*# and tap the vibration test, it shows a fully black screen. The lowest it can go.
[Galaxy S II General] spiros83:
Isn't that screen the same as turning the phone off? Or is it just like locking the phone?
[Galaxy S II General] TeeJayEss:
Wow, just locked myself in the bathroom (no windows) for 5 minutes, fired up the *#0*# black test thing, and sure enough there is the tiniest amount of light coming from the whole screen - mind you, I had to wave the phone back and forth in front of my eyes to notice it.
[Galaxy S II General] lotacus:
Ifixit.com made no mention of a backlight.

Vibration test cuts power to the screen.

Screen looks completely black when there is other content because eyes are sensitive to light. (i thought this was a no brainer)
[Galaxy S II General] EarlZ:
Nope, there is still power going through the screen, its also there to check out black levels and other screen related defects when displaying blacks.

Yes there is a very faint light from the whole screen, it should be ~100% uniform and no spots or whatever random patern.

Because SAMOLED has no backlights, so a non defective screen should ONLY show a uniform lighting level, defective ones show spots and no screen power is not cut.
[Galaxy S II General] BryanNL:
I see some spots just under the earspeaker, where the samsung logo is.

It's the width and length of, let's say, the camera on the back of the phone. Another spot is right under it.

I don't see any disstortions in colours or displayed image on the phone (when it's just on, I mean.) It's only When I see a black screen, (rgb;0:0:0), in a pitch-black room, the spots turn up. Lowest brightness doesn't get rid of em, neither does max brightness.

So i'm guessing my screen is defective?

...It looks perfect while displaying colour, no spots, and LCDTest turned out great.

Is it really defective?
[Galaxy S II General] EarlZ:
What is normal and with in specifications should be a uniform lit, if its a very tiny spot and wont bother you or in your daily usage or movies then dont bother if your happy with the phone. Other phones are severely affected with spots while others are 100% flawless on the black test.

This usually bothers the people who use it as a night clock or watch movies in a dark room ( probably b4 sleeping )
[Galaxy S II General] Nikotiko:
My screen is evenly gray colored and it appears only when the screen is completely black. Why I started this topic is because I thought AMOLED screen should not be visible in the dark. As you have pointed out, that is not the case, so I thank all of you who have answered.
[Galaxy S II General] BryanNL:
That's why it bothers me.
[Galaxy S II General] Cyros:
I have this issue, too.

And I mentioned it a while back.

Here's what I posted on June 21:

"...The weirdest thing could be seen when I reached the black background in the app [talking about CheckMyPixels app]. The lights were out in my room and I could see black blotches on a faintly glowing screen all over it. There was a solid horizontal line at the bottom of the screen from edge to edge! What's that!? Try it yourself (in a dark room; give your eyes a couple of minutes to adjust to the darkness)." (http://xdaforums.com/showthread.php?p=14934431#post14934431)
[Galaxy S II General] BryanNL:
Well said, I see my case in this!
[Galaxy S II General] EarlZ:
Have your screens/phones replaced.
[Galaxy S II General] TheQuarterMile:
So coming to the conclusion... Upto a certain extent should one accept this or no? And is it considered a defect which one has to overlook?
[Galaxy S II General] SAlmighty:
when you bring the brightness down to the lowest and look at the notifications area in complete darkness, you can spot a vertical line on the left 1/3 of the screen. you need to squint hard, its really weird

also, check this, http://xdaforums.com/showthread.php?p=18804206#post18804206

and let me know what you all think

thanls
[Galaxy S II General] ChongoDroid:
The black levels on this screen are incredible
[Galaxy S II General] _gege:
Even to display just one pixel, the screen controller needs to be active and use some juice.

And if deep sleep mode is incompatible with display on, you can expect battery life alike AOS bug one.

A turned off amoled pixel is by definition completly black (and yes, that would give infinite contrast ratio, no big deal).

Now, we would need a amoled guru to know if screen need to keep a minimal electric tension even on black pixels when the screen is active.

Other possible culprit is the system color adjustement (dynamic/standard/video screen modes).

It use a mathematical formula between the exact color you ask and the one displayed.

It could end up displaying not absolute black even when you ask for 0,0,0 rgb color.
[Galaxy S II General] SAlmighty:
is this normal (look at the lower left and top right of the screen and notice the paleness)?

please let me know, thank you
[Galaxy S II General] TheQuarterMile:
Should I get the screen replaced? Feels funny to use something defective... Especially when your paying for it...
[Galaxy S II General] TheQuarterMile:
If that was the case then if there was white text on the black screen the blotches would still be visible...
[Galaxy S II General] SAlmighty:
here are the areas highlighted, please check and let me know, thank you
[Galaxy S II General] Alienfreak:
No it is not normal. But you already know that.

Get it replaced already and keep us from hearing your "I have a defective screen, Samsung is so bad".

You guys never looked at any blacks at any screen or? AMOLED will not turn completely off unless you switch off the Screen completely.
[Galaxy S II General] SAlmighty:
just confirmed black blotches all over my screen. phone was manufactured sometime in august AFAIK, this is sh!t. either wait for galaxy note or return this crap completely. :mad:
[Galaxy S II General] heahmad:
i contact my dealer and they refuse to replace my phone because there is no obvious problem but they say also that this problem will not affect the screen neither in the short nor long term:mad:
[Galaxy S II General] BryanNL:
@Heahmad

I went to my dealer a week ago and as soon as I started to play around with the codes for the lcd-test and other diagnostics-tests, first thing he said was; ok, have it replaced under warranty.

I decided to hold it out.

Just play smart and act like you're pro at these phones! :)
[Galaxy S II General] rudiprinsloo:
I too can clearly see these gray shadows when looking at a black screen in a dark room. It is especially noticible around the corners of the screen. It looks exactly like some of the photos posted in this thread. I must say that I am a little disappointed.

Sent from my Samsung Galaxy S II
[Galaxy S II General] infuse4g:
Have you guys looked at any other type of display technology. The blacks are almost gray. The shadows we are seeing are invisible when their is high contrast content on the screen such as a movie.
[Galaxy S II General] infuse4g:
There.
[Galaxy S II General] seburn:
As u will see using this video it only takes a tiny amount of light on the screen to make this 'issue' completely unnoticable. That been said u do notice the issue in the beginning when the entire screen is black. http://m.youtube.com/watch?v=2TncKWs6DNc Even plasma screens have these defects but if u had an lcd u would notice its inability 2 produce black much more.
[Galaxy S II General] TheQuarterMile:
Gona go to the service centre when i get the time and demand for a replacement of the screen... Only worry is that if the replaced screen also has this defect.

Sent from my GT-I9100
[Galaxy S II General] DrunkFuX666:
I Have the same issue... so annoying... i dont only have blotches which arnt that noticable ,but also these dark LINES... which cant be missed... cant even really get it changed here under any warranty... :@
[Galaxy S II General] Ashan85:
Hello Guys!

Done a major upgrade and at the same time my firs android phone, the beast gs2 in white. I must say that I was so sure about its quality and performance that I never doubt nothing about it. BUT... It's been more than 2 weeks already, and I find myself realising that I have a real dirty display. Was searching something interesting settings at accessibility, the room was quite dark, the brightness was maybe 30percent. And I covered with my palm the parts that were on top and noticed a black spot coming. Quickly downloaded a screen test and I noticed that the all black is not black at all. :-( I have 92% greyhound display (like the op said here, lightened display) with a big likeable thumbnail very dark spot and some vertical lines of patterns. It looks like a dirty thing. It is obvious a big fault. For those of you that you didn't find out if you have thisbproblem: go to android market

Download screen test,

Getbinto a dark room

Set the brightness anyware between 60 to 0

Go to settings, display, turn off the touch keys lights

Also in setting sey the display to turn off after 60seconds

Start the test. Pass the white. Stop at black, it will show a nice black in thebfirstvsecond, now wait... It becomes grey? Do you see black spots on this grey display? Or vertical lines? That means you weren't lucky. Like me actually

I have the phone from three UK. After more than 2 weeks do you think thatvthey will exchange it?

They're policy states 7 days. And the handset must. Be as new... What should I do? This is not to bad, but it sucksbto, because other phones could be OK. I put an all black wallpaper, and I could see even with some icons on the page this ugly sight? So anybody from UK with a good story aboutbr eplacement?
[Galaxy S II General] timonoj:
I've read several times on other forums that white galaxies have rather ****ty displays, with a lot of color faints, yellowish bandings and other issues...
[Galaxy S II General] Ashan85:
Thanks for the info man, could you please send me some links? It is funny because I had a big dilemma on choosing the colour, I liked the white one first, got it then seeing giutube videos with the black one I liked the stealth look, like on single black display, after that started to like the white after getting it out of my pocket in the daylight it is just awesome and sexy looking. But now... I feel bad... Is it true? I read that the US versions have this issues too. Could anyone tell me if this falls under the warranty offered by samsung or the provider, three, will replace it? I have seen so many offers online with refurbished phones at a cheaper contract that in stores so maybe that's how the dealers are doing. I just say that I don't have problem wit the colours, they are OK, only the black part is. Frustrating. For example hen a movie starts at first seconds it has a blank black screen, and I don't see it black at all after my eyes get used wit it.
[Galaxy S II General] joefez:
Just to let you know I have created a specific thread to deal with the cloudy/dirty/blotchy screen issue when displaying a pure black screen.

http://xdaforums.com/showthread.php?t=1507144

I realise there are some good examples dotted through this thread, but I thought it might be a bit more useful to have something specific to see how many people have this exact problem (rather than general tint / colouration issues)
[Galaxy S II General] yay101:
Can everyone please try fluxxi kernel and the different batch color corrections?

I don't have the issues some have noticed with the sgs2 on the latest revision display
[Galaxy S II General] arial.black:
just wanted to ask,

why is the SGS2 screen looks jaggies (not really smooth) when I set a gradient picture.

example, when I set a wallpaper of the sea with blue sky background, I can see the blue sky gradient looked so jaggies.

(if you guys understand what I mean)

when I put the wallpaper on my iphone, they looked smoth, no jaggies at all.

why is the SGS2 looked like that? is it the differ between AMOLED screen vs IPS?

oh and another question,

all AMOLED screen will degrade and leave a burn mark when static picture shown for quite a long time right.

does that affect on other AMOLED devices? such as galaxy note, galaxy nexus, nokia lumia 800, htc AMOLED phones & other phones who's using the AMOLED screen?
[Galaxy S II General] kelah:
It's a bug on stock ROMs went from 2.3 where is 16bit color not 24bit. On AOSP ROMs everything is ok.
[Galaxy S II General] arial.black:
waoow, thanks for the info man :good:

currently I'm still using the stocks 2.3.3 ROM

oh, what about samsung base 2.3.6 and ICS 4.0.3 ROMs, are they already fix the bug? (and the AOKP Roms too?)
[Galaxy S II General] kelah:
Samsung used a lot of 2.3 code in 4.0.3. So on official ROMs bug still here.

On AOSP roms this bug was fixed.
[Galaxy S II General] arial.black:
ow ok,

I'll remember that, thanks a lot man :)
[Galaxy S II General] kelah:
You're welcome. :)
[Galaxy S II General] FrankNorton:
The real reason why you batt discharged is because when screen is on your cpu do not go into sleep mode.

my screen also is not completely black, with screen adjuster I found that up to 15 the pixel are still black so I have a contrast fixed to 15, this returns much better clarity without any issue especially when seeing movies.

android is very primitive in color proofing (you can't tell the system to send level 256 to the screen when image is say on 220, in my device the green is saturated at 220 so to have better contrast I should send 256 when is 220 but no way, I only fixed the 15 problem, from 0 to 15 there is no difference), very sad about that.
[HTC Sensation] marcos600rr:
Ive juste get s=off and flash honey 3d everything was good so far but didint like the 3g at status bar the ive had flash the crustal piramyd and got isues with toch screen sensitivity like look ring not responsive and no carousel???is my phone having problems or is the software?can somebodie help me with this?
[HTC Sensation] stevejau:
Did you do a complete wipe before switching ROMs? Installing a new rom over another will cause problems.
[HTC Sensation] marcos600rr:
Yep 2 times and nothing im thinking to flash the honey sense 3d again to see if problems persist tnx
[HTC Sensation] dcwiker05:
Ok So there was a thread somewhere here in the Sensation section that had a whole long list of build.prop edits and stuff. It appered to have been taken from a Samsung Galaxy S forums. I cant seem to find the tread anymore I've seached all over the place for it and coming up fruitless. I need it for the hacks it had that sped up data and saved a bit of battery life they worked very well but since I flashed a new ROM I've lost them :( Any help locating this thead would be much appreciated. I don't understand what happened to it. Unless I'm blind....
[HTC Sensation] stevejau:
not sure if this is what you are looking for...

http://xdaforums.com/showthread.php?t=771232

good luck
[HTC Sensation] dcwiker05:
Close that one doens't have the right changes for the internet since it's a CDMA phone instead of GSM. That had some of what I as looking for though. There was one here in the Sensation forums though that seemed taken from the galaxy or maybe DInc forums. It had some weird title seemed to be the persons username that orginally posted it.
[HTC Sensation] stevejau:
I think from memory you are referring to master&slave. They had a whole list.
[HTC Sensation] dcwiker05:
YES!!!!!!!!!!!!!!!!! Thank you! Any idea what happened to that thread?
[HTC Sensation] stevejau:
no i don't sorry, but i did find yet another article, may be of value to you. http://xdaforums.com/showthread.php?t=1210341
[HTC Sensation] dcwiker05:
Yup that looks like the same exact list actually so that will work! Thanks very much I'll be sure to hit the button whe I get home and am using a real web browser not this IE6 crap I have to deal with at work :(

Weird how that thread just vanished though
[HTC Sensation] stevejau:
your welcome
[HTC Sensation] itzsnookums:
try this site to....

http://blog.naver.com/PostView.nhn?...20136001333&redirect=Dlog&widgetTypeCall=true
[HTC Sensation] dcwiker05:
That would be the one my friend! Thank you very much
[G2 and Desire Z General] papeshfoo:
Title says it all...Finally thinking about rooting, but I dont know it its possible yet since I got the 2.3.4 update. Can someone point me in the right direction please? All the posts I found are kind of old.
[G2 and Desire Z General] slufoot69:
Root http://xdaforums.com/showthread.php?t=1206930 must have S-OFF before you update to 2.3.4 or you will have to downgrade to 2.2 turn S-OFF then patch again to 2.3.4 then root...
[G2 and Desire Z General] papeshfoo:
Damn, no other way huh? I don't feel like downgrading, guess I'll wait till there is another way...lol. Thanks for the response!
[G2 and Desire Z General] Tine17:
Desire Z 2.3.3 ROOT

Hi,

I am using EU version of G2 (desire Z) with htc official gingerbread 2.3.3 ROM. I am also new in this so downgrading to 2.2 isn't option for me. Does anybody knows if there will be some simplyfied way to root desire z 2.3.3 (one click root or something like that) somwhere in near future.

Thanks for reply!

Tine
[G2 and Desire Z General] fredcorp6:
I'm in the exact same position as u! I second this question
[G2 and Desire Z General] martonikaj:
Well considering that there isn't even a reliable one-click root for the 2.2 release (and even farther from one-click for the European version) I'd highly doubt that you're going to see a one-click for the 2.3 release any time soon, if at all.

Just because you're new doesn't mean that downgrading isn't an option for you! Just do your research and follow the detailed guides and you'll be fine. It may take some time for you to build up some confidence to do it, but when its done you'll be glad you took the time to learn a lot about the device as you learned to root it the hard way.
[G2 and Desire Z General] wayaubaskara:
i'm afraid there's no other way for now, you have to downgrade to older version which had root method already.
[G2 and Desire Z General] nidza:
Not a temproot? I think I have seen a topic for temproot of G2, but no responses from anybody who has tried, so I don't want to be first to try.

I wish only to remove annoying ADS, all the rest is fine with 2.3.4.