Adjusting screen color balance - Galaxy S I9000 General

The screen is beautiful with its deep blacks, but unfortunately the color temperature is way off. It's evident just looking at it, and comparing side by side with my calibrated monitor it shows quite clearly that it's way too blue.
I've googled around, but couldn't find a way to adjust the color. However, I noticed that the video player app gives you the option "Color Tone", providing you with Normal, Warm and Cold. Warm isn't perfect but it's a whole lot better than the default. The interesting thing is that choosing a different color tone not only changes the color for the video playing, but for all the ui elements as well, including the notification bar...
Of course once you exit the video player color goes back to normal... so is it possible to make an app that can apply this color tone change to the entire system?

actually that's the way it supposed to be, more blueish / redish something like that, there was a Documentary somewhere here in the forum that explains why.
it is just the way how the AMOLED screen is designed.
to me, it's perfect!
some people that are used to LCD or other similar screens are not used to it.

Color temp is color temp, no matter the tech. If you like the way it is that's great, but I'd like to know if it's possible to modify it. As demonstrated by Samsung's video player it appears to be so.
Oleds have a ridiculous gamut, while not "proper", I actually like, and maybe that's what you're referring to when you say it was designed that way.

AllGamer said:
actually that's the way it supposed to be, more blueish / redish something like that, there was a Documentary somewhere here in the forum that explains why.
it is just the way how the AMOLED screen is designed.
to me, it's perfect!
some people that are used to LCD or other similar screens are not used to it.
Click to expand...
Click to collapse
You're talking about the Desire/Nexus One screen being red/pinkish? Well the Samsung is the opposite; it is slightly too green/blue. It's not too far off though, but I'm not aware of how to recalibrate it.

Did a little digging into the source code. Looks like this is controlled by Samsung's "mDNIe" code, see s3cfb_mdnie. As far as I can tell there's several hardcoded modes like "mDNIe_VIDEO_WARM_MODE" or "mDNIe_UI_MODE", etc... I think this is what the video player is using to adjust the screen color.
Unfortunately I don't know anything about android development... anyone has any idea if we can use this in our own apps?

lolzerlol said:
Did a little digging into the source code. Looks like this is controlled by Samsung's "mDNIe" code, see s3cfb_mdnie. As far as I can tell there's several hardcoded modes like "mDNIe_VIDEO_WARM_MODE" or "mDNIe_UI_MODE", etc... I think this is what the video player is using to adjust the screen color.
Unfortunately I don't know anything about android development... anyone has any idea if we can use this in our own apps?
Click to expand...
Click to collapse
Interesting...maybe in a short while someone will come out with an app to be able to adjust the settings?
I took some pictures of my four Vibrants and was surprised to see how blue my screen was compared to the other three. To be honest, I actually like it. My phones #4 to the far right, which is obvious from the pictures.
Either way...the screens are amazing!

lolzerlol said:
Did a little digging into the source code. Looks like this is controlled by Samsung's "mDNIe" code, see s3cfb_mdnie. As far as I can tell there's several hardcoded modes like "mDNIe_VIDEO_WARM_MODE" or "mDNIe_UI_MODE", etc... I think this is what the video player is using to adjust the screen color.
Unfortunately I don't know anything about android development... anyone has any idea if we can use this in our own apps?
Click to expand...
Click to collapse
any new updates on why some of these phones have a blue tint and others don't. Still wondering if I chould exchange it, I've put my Vibrant side by side next to Epics, Fascinates, and Captivates, some have blue tints, some don't
Really odd, I can't figure out if I like it or not, my eyes are so trained over the years to more warm and yellow toned whites, this blue thing is throwing me for a loop.

supercurio is currently implementing a color correction fix in his Voodoo kernel, but it is still not finished. The color correction is active only at 100% brightness at the moment.
For more info http://project-voodoo.org or you can find the voodoo thread here in the android development forum.

Related

Nexus one display not as advertised?

Secrets of the Nexus One's screen: science, color, and hacks
http://arstechnica.com/gadgets/news/2010/03/secrets-of-the-nexus-ones-screen-science-color-and-hacks.ars/
short version
Thoughts
*puts on flame suit*
either way i still love my NX-1
i will say this... every droid user has envy of my N1's screen.... ive yet to find someone who liked their droid screen better and i agree with every single one of them
by the way, this was posted in another thread already
I don't know.
My Nexus one screen looks pretty darned sharp to me.
true. delete this thread pls.
resinous said:
Secrets of the Nexus One's screen: science, color, and hacks
http://arstechnica.com/gadgets/news/2010/03/secrets-of-the-nexus-ones-screen-science-color-and-hacks.ars/
short version
Thoughts
*puts on flame suit*
either way i still love my NX-1
Click to expand...
Click to collapse
It's a moronic comparison of two entirely different technologies.
Google isn't paying anything to the big techno blogs sites so what do you expect?
I've seen articles ranging from explaining how Google steals all your dataz and kills your dog to how google is bribing carriers and phone manufacturers to adapt android. The only thing you should do is to utilize your own judgement and get used to tech sites being like this. This isn't going to change anytime soon.
As I understand it the phone has the pixels it says it does it just doesn't utilize them properly, it also doesn't utilize RAM properly, I think it could also utilize the 5mp camera and 1ghz processor better.
The point is that the phone seems like it was rushed to the market and I believe a lot of the problems can be addressed with software updates. I just hope Google finishes whatever is taking all of their time so that the issues can be addressed. But I do think that so many of the issues can be resolved and this phone can truly become a "superphone". The nexus is taking a lot of well deserved criticism lately but Android has the ability to respond and improve the nexus/android experience without hardware overhaul, and I believe that's very shiny silver lining...
There's always some problem with every device. The only problem with nexus one is that it has no major issues, just minor ones which are being highlighted by iPhone lovers. AMOLED is a new technology, so things are different.
so he created some stippled greyscale pictures that produce artifacts because of the way the pixels are arranged on the N1 screen.
so what? like who looks at stippled greyscale pictures using their N1 anyway?
I also took a picture of some of the status bar icons using a digital camera in macro mode and my screen does not look like his picture of the 3g icon at all.
Its all about how the eye perceives images, forget that pseudo science. The AMOLED screen on the N1 is the best screen I have seen on any phone, black levels are incredible and contrast is good.
text is readable at a smaller font size than other phones.
If the N1s screen does have faults in the implementation of AMOLED then we can expect even better screens in the future using that technology, but as of today it is the best IMHO
Ha!
"You think your Nexus has a beautiful sharp display? It really doesn't. let me tell you why..."
classic
Beautiful display I could care less how the 480x800 res comes about. Everything looks amazing
scote said:
so he created some stippled greyscale pictures that produce artifacts because of the way the pixels are arranged on the N1 screen.
so what? like who looks at stippled greyscale pictures using their N1 anyway?
I also took a picture of some of the status bar icons using a digital camera in macro mode and my screen does not look like his picture of the 3g icon at all.
Its all about how the eye perceives images, forget that pseudo science. The AMOLED screen on the N1 is the best screen I have seen on any phone, black levels are incredible and contrast is good.
text is readable at a smaller font size than other phones.
If the N1s screen does have faults in the implementation of AMOLED then we can expect even better screens in the future using that technology, but as of today it is the best IMHO
Click to expand...
Click to collapse
Can you post up the picture?
And still the UI isn't taking advantage of even that resolution, since the UI is only running at 320x533.
Matt-Helm said:
Ha!
"You think your Nexus has a beautiful sharp display? It really doesn't. let me tell you why..."
classic
Click to expand...
Click to collapse
To be fair, many of us do recognize the fuzziness of the text and the article explains why that is happening. Perhaps a better statement (whether or not the tone of the article supports it) would have been "Your N1 has a beautiful sharp display that wows people, but the text seems a little fuzzier than you would expect for such a nice screen. Why the difference?"
I think the text can look a lot better with the right tweaks to the text rendering code, but either they tried and didn't get it right or they simply haven't created AMOLED-specific text rendering routines yet.
I'm sorry, but I'm not seeing this fuzzines of which ye speak.
I don't see the fuzzyness either.... and I got the best vision a human has... I read the bottom smallest lines at the eye doctor....
But whatever
Edit... after closely looking at it I see on the right of words a little fuzzy look, all I got to say is.... Bwahahahaha lame, I don't give a ****... nexus one is beautiful Lmaooo picky people...
Haters gonna hate.
This is so funny. I work in a design oriented field. While I do not plan on designing on the phone (probably would if the right apps come out!), I do use it to show and review design work. This phone does everything I need it to do. If it's good enough for me and my clients I'm guessing it is good enough for most. Hate on.

Display problem/yellowish left side

Just got my new SGS2 3 days ago, really liking it but stumbled into a screen problem and would like to know if it's just me/it's normal/I need to change a setting to fix the problem.
Just like the title says, the left side (about 1/3) of my screen changes the colour of the image to a more yellowish tint. This seems to happen just when the brightness is quite low, and tends to disappear when close to 100%.
It is rather subtle, but can be seen where there's white text on a darker background (white characters become darker the closer they are to the left border), or when looking at an uniform colour.
I created this test page to make the problem more apparent: http://fiddle.jshell.net/qFxsC/1/show/
When visiting it on the S2 browser and setting browser brightness to around 20%, it becomes quite visible.
Anybody else with the same problem?
EDIT:
We still DO NOT have pictures of a phone WITHOUT the problem described above!
If you believe your SGS2 has a perfect screen, please post pics of the notification area taken in the dark at both 0-20% brightness and 100% brightness!
UPDATE
Various websites have started to talk about this problem, linking to this thread:
- http://mobile.engadget.com/2011/05/30/is-your-galaxy-s-iis-display-yellow-on-the-left/
- http://pocketnow.com/android/samsung-galaxy-s-ii-screen-problems-trouble-in-paradise
- http://www.onlinesocialmedia.net/20...2-s-ii-screen-problems-users-en-masse-report/
- http://gsmarena.com/samsung_galaxy_...y_uneven_brightness_yellow_tint-news-2719.php
I have just sent an email to GSMarena asking if they could check the unit they reviewed to see if it has the same problem. Of all the phone reviews I have seen, theirs seems to be the most focused on image quality, I'm sure that if their unit doesn't have this problem, they would be able to take clear shots of a flawless screen.
EDIT:
GSMarena took screens of their unit using the above test link, and while so far I believe theirs is the best looking display that we have seen so far, it *STILL* has the problem.
I am going to link this thread to samsung UK next, in the hopes they will give an official answer acknowledging the problem.
EDIT:
latest firmwares seem to fix this problem or at least make it much less noticeable.
Take it straight back and swap it. Seems to be a growing amount of people on here, including myself, with various dodgy screen issues.
B
The screen doesn't look perfect if you look at a uniform color on the whole screen + low brightness, but... well I don't tend to use it much for that. Could be a limitation in OLED production-technology getting all the pixels to have exactly the same brightness/color etc.
edit:
To answer directly to the question here, no I don't have a yellowish left side. It's just not completely uniform across the whole screen.
I've got this same thing. I first noticed it when using Estrongs file explorer. I always have my screen turned down to 0% to save battery, but didn't notice this anywhere else yet (at least I didn't think about it).
Your posted image does show it clear.
What to do? Could you others comment whether you've seen this? Go to the OP's posted link and set your brightness down to 0%.
Quist said:
I've got this same thing. I first noticed it when using Estrongs file explorer. I always have my screen turned down to 0% to save battery, but didn't notice this anywhere else yet (at least I didn't think about it).
Your posted image does show it clear.
What to do? Could you others comment whether you've seen this? Go to the OP's posted link and set your brightness down to 0%.
Click to expand...
Click to collapse
I tried to mess around with settings such as auto adjust screen power etc, but the only thing that seems to fix it is crank up the brightness.
We obviously can't keep it anywhere close to 100% tho, this phone sucks battery down quickly already at 0%!
Another thing you can do to check if you have this screen problem is call *#*#0*#*#*
This will make the phone go in the diagnostic program, and if you try the white diagnostic, you can somewhat see the problem, although not quite as clearly as in the test web page I posted above.
I'm considering to return the phone, as it doesn't seem to be getting better, despite having read that some screen problems might go away after a few days.
Mine is exactly the same. It's noticeable at the lowest brightness setting, however if I increase the brightness even slightly it pretty much disappears for general use. It's still there but not really enough to bother me.
On the OP's link I changed the brightness through several settings and at certain brightness levels the whole screen gets a yellow tint. Not necessarily related to the left side of the screen having a yellow tint, apart from I guess a lack of brightness of the blue subpixels relative to the red and green.
I'm not sure if I'm imagining it but I think it has improved slightly on mine over the past week. However if it gets any worse I think a warranty claim will be in order.
Hhrrmm, I'm in a catch-22 here. There's generally a grace period for any manufacturing errors like this where you can quickly get a replacement just by returning it to the vendor. Problem is, my vendor won't be getting any new units in for another two weeks.
Quist said:
I've got this same thing. I first noticed it when using Estrongs file explorer. I always have my screen turned down to 0% to save battery, but didn't notice this anywhere else yet (at least I didn't think about it).
Your posted image does show it clear.
What to do? Could you others comment whether you've seen this? Go to the OP's posted link and set your brightness down to 0%.
Click to expand...
Click to collapse
I don't see it clearly on the link he posted.
But i do see it in the notification screen. The grey area is slightly darker/yellow tint on the left site. Even when i put it on maximum brightness you could see it. Especially when you first concentrate your eyes on the right side for 5 seconds and than on the left side.
I do seem to notice it on the notification grey slider where your finger is on when you pull it down, on the left side the grey is a little bit "darker" than on the right side of mt finger.
I tend to think I can also see it on the keyboard, whereas the Q has different grey than P on the opposite of the screen...
Anybody could check this out on their phone??
Thanks in advance!
As time goes by, it feels like my problem is getting worse, although it may only be due to me being aware of it.
Also began noticing it in the pull-down message field. Now I see it against white backgrounds as well, almost like a faint green-grey shadow.
I've contacted my vendor and requested an RMA and replacement. They're sending me a shipping slip to send it to them "for control" then they'll contact me on my options from there. Can only hope they see it as clearly as I do and that they send me a new phone as a replacement rather than repair/refurb crap.
Think this is the last time I buy electronics online. I saved 20% off retail on this one, but having the option to do a walk-in replacement at a brick-n-mortar store would have been worth the higher price. <sigh>
I've got the same thing aswell, a slightly yellow/brown-tinted shade towards the left side of the display. Also visible for example in the market menues, the white areas seem to be very slightly darker towards the left side.
Not sure I am bothered about it enough to return it, doesn't bother me unless I specifically look for it. Also it really is very slight.
TechNoir said:
I've got the same thing aswell, a slightly yellow/brown-tinted shade towards the left side of the display. Also visible for example in the market menues, the white areas seem to be very slightly darker towards the left side.
Not sure I am bothered about it enough to return it, doesn't bother me unless I specifically look for it. Also it really is very slight.
Click to expand...
Click to collapse
If everybody has it, no problem for me.
But if the majority does not have it, I would like to have one without it. Do you think Samsung knows abouth it?
When you have a full grey pictuere or just the notification screen and you go into a perfect dark room. Can you also see, some white vertical en horizontal lines? Looks like hardware where the screen is build on?
Here is a photo I took of my screen with a grey background (see below - click on it to enlarge).
For me, its visibility seems to vary depending on the ambient light, but I'm definitely seeing more effects of it now.
Really hope I'm able to get a good replacement. Am reading quite a bit about this, banding, lines and dead/lit pixels.
so do you think it's a hardware issue, or maybe it will be gone??
r_a_c said:
If everybody has it, no problem for me.
But if the majority does not have it, I would like to have one without it. Do you think Samsung knows abouth it?
When you have a full grey pictuere or just the notification screen and you go into a perfect dark room. Can you also see, some white vertical en horizontal lines? Looks like hardware where the screen is build on?
Click to expand...
Click to collapse
The lines you mention are present both on my SGS and my SGS2. It seems to be patterns in the actual OLED pixels, and the patterns and lines are static even when you move pictures. Mostly visible on lower display brightness settings. I've gotten used to them and they don't bother me, and since I have the same thing on two SAMOLED-phones I'd chalk that one up to "just the way it is" aswell. Using anything over 50% brightness has them mostly fade into the display light so only really visible on the lowest brightness settings.
TechNoir said:
The lines you mention are present both on my SGS and my SGS2. It seems to be patterns in the actual OLED pixels, and the patterns and lines are static even when you move pictures. Mostly visible on lower display brightness settings. I've gotten used to them and they don't bother me, and since I have the same thing on two SAMOLED-phones I'd chalk that one up to "just the way it is" aswell. Using anything over 50% brightness has them mostly fade into the display light so only really visible on the lowest brightness settings.
Click to expand...
Click to collapse
This what you mean?
My Samsung focus and Cowon s9 (which I don't even think has a samsung oled screen) have that as well on the lowest brightness, I think its inherent to the tech.
TechNoir said:
The lines you mention are present both on my SGS and my SGS2. It seems to be patterns in the actual OLED pixels, and the patterns and lines are static even when you move pictures. Mostly visible on lower display brightness settings. I've gotten used to them and they don't bother me, and since I have the same thing on two SAMOLED-phones I'd chalk that one up to "just the way it is" aswell. Using anything over 50% brightness has them mostly fade into the display light so only really visible on the lowest brightness settings.
Click to expand...
Click to collapse
Ah ok thank you!
On a grey pick with full birghtness I can see them too.
On the post 2 post above yours(quist his post) you can see the lines, but now they are not white, but darker, can you confirm you see them and this is what you mean?
Do you also have the yellowish tint on the left side?
r_a_c said:
Ah ok thank you!
On a grey pick with full birghtness I can see them too.
On the post 2 post above yours(quist his post) you can see the lines, but now they are not white, but darker, can you confirm you see them and this is what you mean?
Do you also have the yellowish tint on the left side?
Click to expand...
Click to collapse
For both the SGS and SGS2, the dark lines are there for my devices aswell. They can seem a bit "grainy", and don't seem like perfectly defined lines, though they generally are always straight horizontal or vertical lines. I also have the Xperia Arc at hand, and if you look at a grey-ish image on either the SGS/SGS2, or the Xperia Arc (LCD), the Arc generally has a very smooth grey image, while the SGS/SGS2 has almost like a fine overlay of subtle lines or grids, generally darker in color than the image displayed, though not clearly defined and not completely symmetrical across the display.
Doesn't seem symmetrical enough to be a grid fo the digitizer layer or smtn like that, but definitely a pattern in the display itself. I still pick an AMOLED screen anytime of the day, the Arc display, while more uniform and "blemish"-free in this regard, still has that LCD backlight bleed-through which for me makes the display alot more tiring for the eyes.
Also my SGS2 has a very subtle tint towards yellow when viewing some of the grey test-images some people have posted. Never noticed it on my SGS1, so either I didn't look well enough, or it might be either hardware-related (something causing the pixels on the left side to perhaps not get the same amount of control voltage/whatever for the pixels, thus causing less blue/more yellowish color), or software. Either way, it is way too subtle for me to care at all, maybe this is even according to spec for the SAMOLED+ and some use will even the pixels out, not sure if anyone has some inside knowledge about the SAMOLED screens.
I am definitely seeing this problem getting worse, now it is getting rather obvious as long as phone is lit by artificial light or in the dark, while sunlight seems to make it really hard to spot, even if not direct.
I've been given advice from samsung call center to bring to phone to the closest assistance point, which I'm going to do tomorrow - hope to be able to report back that it is a known problem and they will change my unit.
I hate to make an iPhone reference here, since I'm *not* a fanboy, but Engadget reported when the IP4 was released that yellow spots and banding were due to glues that had not completely dissolved/disappeared and were part of the bonding process of the screen:
http://www.engadget.com/2010/06/24/iphone-4s-yellow-spot-issue-goes-away-with-a-bit-of-time/
Now - the picture above showing a completely yellow left-side display - that looks 100% abnormal and I'd RUN back to the store to swap it out. I don't think that's glue related.
Download an app from the Market called "Dead Pixel Test" and run it with the white setting to see what it looks like. Is it still yellow?
Have this same issue. Noticed it right away unfortunately. It will always bother me if I deal with it.
Sent from my GT-I9100 using XDA Premium App

GT 7.7 AMOLED producing similar issues as the SGS2 and SGN

Here we go again, looks like Samsung hasn't really fixed any of the 'issues' with the AMOLED display.
I can clearly see the bottom half of my 7.7 has a heavy yellow tint compared to the top half which is whiteish.
Anyone else noticing the same?
Crazy CS said:
I can clearly see the bottom half of my 7.7 has a heavy yellow tint compared to the top half which is whiteish.
Click to expand...
Click to collapse
Do you can attach a photo?
Crazy CS said:
Here we go again, looks like Samsung hasn't really fixed any of the 'issues' with the AMOLED display.
I can clearly see the bottom half of my 7.7 has a heavy yellow tint compared to the top half which is whiteish.
Anyone else noticing the same?
Click to expand...
Click to collapse
My screen has no issues whatsoever, so far as I can tell. I just checked on a grey background to see if I could detect the yellow tint, and nope, it was clean and uniformly grey for me.
screen
Mine is okay too. No issues.
Crazy CS said:
Here we go again, looks like Samsung hasn't really fixed any of the 'issues' with the AMOLED display.
I can clearly see the bottom half of my 7.7 has a heavy yellow tint compared to the top half which is whiteish.
Anyone else noticing the same?
Click to expand...
Click to collapse
This being my first amoled display - I was blissfully unaware of "limitations" of this new technology. So I had mine on full brightness ( 70 -90%) for the first week I would say
Then I read some other posts like ths - then realised this was not a good thing to be doing. Its like plasma technology (although much better than lcd/led in terms of picture quality) it still suffers with the "image burn in" with static content. It took about 9 generations of plasmas to "cope" with this issue.
SO i would not recommend high brightness for the first week to two weeks to allow the screen to "bed-in" but I am not sure of how oleds function or they even need this.
I do have a very faint yellow hue that matches exactly with the system bar at the bottom. But off course the system bar is static and hides this all together. The problem is when you change oreintations - mine is 99% in landscape so not noticeable for my use.
However in portrait, this again is only really visible on a minimum brightness setting and against dull grey background. If I put up the brightness up to 25% it is really difficult to make out & any brighter I cant see it.
If it bothers you enough then to minimise static content:
1) Screen timeout from 1 - 15 minutes
2) I also now use "hidebar.apk" to hide the system bar. Can be a bit buggy but works on the whole and is free. Use it mainly when browsing for a long periods of time.
3) in the default browser you can change to full screen mode, in settings go to Labs -> select quick controls. This gets rid of the bar at the top.
Finally, full screen web browsing !! Also the quick controls are slick, once you get the hang of it. Just press on the extreme edges of the screen to bring it up.
Or just get a replacement. In your case it sounds bad enough.
For me I cant notice any issue 99% of the time. Even If I knew about the issue beforehand, I think the screen is just way better than anything out there for at least a year or two. You cant fault the rest of the tab - its pretty mint
just so people are aware, this screens "issues" are only for the neat pickers, they are not visible under normal usage condition when the screen is set to auto or manual
the only way to see those is when you set the brightness all the way to Zero
as long as you keep brightness at 20% or more you wont see any of that
Is this the same issue with the Galaxy S1?
On the bottom half I have an area that is yellowish on white pages. And when you look at a black image in a dark room the black on that area is more dark.
When you turn the display off and look against the sun or similar bright light source at a shallow angle you can see that the golden mesh is not flat in this area. it is bumpy
Jade Eyed Wolf said:
My screen has no issues whatsoever, so far as I can tell. I just checked on a grey background to see if I could detect the yellow tint, and nope, it was clean and uniformly grey for me.
Click to expand...
Click to collapse
mohlin said:
Mine is okay too. No issues.
Click to expand...
Click to collapse
Crazy CS said:
Here we go again, looks like Samsung hasn't really fixed any of the 'issues' with the AMOLED display.
I can clearly see the bottom half of my 7.7 has a heavy yellow tint compared to the top half which is whiteish.
Anyone else noticing the same?
Click to expand...
Click to collapse
Pictures would be nice so we can take a peak, Im not sure how well it would translate but it should visible enough.
AllGamer said:
just so people are aware, this screens "issues" are only for the neat pickers, they are not visible under normal usage condition when the screen is set to auto or manual
the only way to see those is when you set the brightness all the way to Zero
as long as you keep brightness at 20% or more you wont see any of that
Click to expand...
Click to collapse
For me there is a huge difference between not having any of those screen issues and saying 'its only visible when X is done'. I prefer to have a flawless screen If I decide to purchase, the money back guarantee / refunds are there for a reason.
I use autobrightness as well and it does drop to 0% when Im using my device in the bed room with the lights off. of course I dont have a Tab 7.7 yet but this is how its been since my Galaxy S days and I've never had to do certain things to prevent flaws from surfacing, it was just flawless to begin with aside from the Pentile limitations on the text.
Then again your opinion, my opinion. I hope to see a flawless screen on the Tab 7.7 though but Im not expecting much.
But we shall see once its locally available.
EarlZ said:
Then again your opinion, my opinion. I hope to see a flawless screen on the Tab 7.7 though but Im not expecting much.
Click to expand...
Click to collapse
Dude, the 7.0+ is probably better option for you. Save some money and headache because the technology is samoled+ not ++ or whatever the next generation is going to be called in 12 months.
I would say "normal" usage patterns and many will have flawless screens. Blast it at 100% brightness with a static image for a week - you will not be a happy bunny
ezynow said:
Dude, the 7.0+ is probably better option for you. Save some money and headache because the technology is samoled+ not ++ or whatever the next generation is going to be called in 12 months.
I would say "normal" usage patterns and many will have flawless screens. Blast it at 100% brightness with a static image for a week - you will not be a happy bunny
Click to expand...
Click to collapse
Many will have flawless screens but you advise against it
I'll just have to wait for one that is flawless and purchase it, putting the stock keyboard in landscape mode easily shows this issue. For what its worth this yellow tint no matter how slight will show up in HD movies
Even with my phones Im more of an indoors user so my brightness stays either auto or probably fixed at 20% and I usally drop to 0% when web browsing in bed.
But I'll have to see it in person.. or its another refund process.
EDIT:
Believe it or not some review reviews on the Galaxy S2 and Galaxy Note in HD format actually shows a noticeable hint of yellow tinting.. I've seen 2 HD reviews/previews so far and it looks good. Hopefully it translates well in real life.
i wemt to this site http://www.checkpixels.com/test.html/ fullscreen landscape actually i didnt notice it i had brightness set to zero.
murymury said:
i wemt to this site http://www.checkpixels.com/test.html/ fullscreen landscape actually i didnt notice it i had brightness set to zero.
Click to expand...
Click to collapse
Broken link?
If you click here http://www.checkpixels.com just click on "Check pixels on my LCD!"
Then you get here http://www.checkpixels.com/test.html/
Polarfuchs said:
If you click here http://www.checkpixels.com just click on "Check pixels on my LCD!"
Then you get here http://www.checkpixels.com/test.html/
Click to expand...
Click to collapse
Nope, Chuck Testa...
DNS isn't resolving that URL. Tried several different DNS servers too. No luck. What's the site's IP?
its working fine here
EarlZ said:
Many will have flawless screens but you advise against it
Click to expand...
Click to collapse
dont get me wrong. all i am saying that for me i have to go through the following to see something.
1) reduce brightness to 0%.
2) use third party app to dim screen below normal brightness threshold.
3) use third party app to remove system bar
4) change background to a dull grey
so it all depends on ur definition of flawless.
as i say under normal circumstances it is a non issue.
jade eyed wolf said:
nope, chuck testa...
Dns isn't resolving that url. Tried several different dns servers too. No luck. What's the site's ip?
Click to expand...
Click to collapse
98.131.55.167
Thanks, that works!
ezynow said:
dont get me wrong. all i am saying that for me i have to go through the following to see something.
1) reduce brightness to 0%.
2) use third party app to dim screen below normal brightness threshold.
3) use third party app to remove system bar
4) change background to a dull grey
so it all depends on ur definition of flawless.
as i say under normal circumstances it is a non issue.
Click to expand...
Click to collapse
For me its just a 3 step process
1.) set the brightness to 0%
2.) pop out the stock keyboard which is already grey
3.) check for color uniformity
Heres an example on my Galaxy Note: I've cropped the pictures and its a little misaligned be the judge if Im nitpicking or not.
My 'normal' conditions involve using the tab at 0% brightness in about 85% of the time. But I'll have to see it in person to judge but going with that you said then maybe the RGB stripe handles discolorations a bit better.
What am I supposed to see?
I can see that the left part looks "normal" and the right half has yellowish gray colors.

I do not believe a Note with a good screen exists

Please prove me wrong!
Anyone have any links to videos showing a Note rendering dark grays correctly?
watch the demovideo on your note.
The dozens of reviews which acknowledge how good the screen is proves you wrong.
Pfffff. Tests with Samsung handselected devices. Or do you think that Samsung will send defectiv devices to the testers?
The note I got from bell has no screen issues at all.
Sent from my SGH-I717M using xda premium
Sarius24 said:
The note I got from bell has no screen issues at all.
Sent from my SGH-I717M using xda premium
Click to expand...
Click to collapse
you can see down to one in gammatest??
no black clipping??
no banding??
and: no dark blotches on a complete black picture in a dark room? (you have to see whole screen lightly lit (amoled cant go completely black), and let your eyes accommodate to the darkness!
SGN sucks on screen quality, its own spen scratch the "good" screen... really disappointed.
TML1504 said:
you can see down to one in gammatest??
no black clipping??
no banding??
and: no dark blotches on a complete black picture in a dark room? (you have to see whole screen lightly lit (amoled cant go completely black), and let your eyes accommodate to the darkness!
Click to expand...
Click to collapse
I dunno looks find like all my other phones.
Sent from my SGH-I717M using xda premium
I honestly havent went out of my way to find any issues with the screen.
The videos I have watched all look awesome..I did notice on some dark images there was some banding or whatever its called but thats all I can tell..
I'm not that great with colors so I may not notice as much but it looks great to me so far.
TML1504 said:
you can see down to one in gammatest??
no black clipping??
no banding??
and: no dark blotches on a complete black picture in a dark room? (you have to see whole screen lightly lit (amoled cant go completely black), and let your eyes accommodate to the darkness!
Click to expand...
Click to collapse
Mine is fine with some tweaks. Primarily -40% contrast. I can see down to '2' on that test image. I also notice little or no blotchiness in dark videos any more, although I did before adjustment.
It's a software issue IMO.
Hirudin said:
Please prove me wrong!
Anyone have any links to videos showing a Note rendering dark grays correctly?
Click to expand...
Click to collapse
I share the same sentiment as no one with a 'perfect screen' has shared it. The best I've seen is one w/o any black clipping what so ever since his gamma test result is similar to a Galaxy S2 but I do see a few visible horizontal lines on a grey screen. Its not perfect but its with in specifications aside from the lines.
Alexanderbooth said:
Mod Edit: Quote removed.
Click to expand...
Click to collapse
To the unwise it may seem incorrect since they are only looking at the smaller picture and dont really have a clue on what this 'objective' test is for, let me give a real life example:
Using the Kindle application for reading ebooks gives you the option to use a black background now some screens have very visible blotches even if there is a text on the screen and they are become unoticeable when there is a text above them, this of course matters to someone who reads ebooks in their bedrooms w/o any external light source or to someone who watches movies like me. You see if we ask someone to open kindle and load up something and do this and do that, it makes the 'testing' more subjective rather than just test it in a pitch black room with a black image displayed.
These tests may sound silly to others but its the best way to get an objective result, remember people theres a difference between 'its not there' and 'i dont notice it with normal usage'.
here is an example that hopefully may enlighten you people with self proclaimed perfect screens so you may understand why its so difficult for others to accept such screen exists because with several replacements they havent seen one yet and people always claim that defects are the extreme minority, if its true then no one should need more than 2 replacements to get these perfect screens, correct?
It is also common for others to be dismissive of any screen related issues, you can be dismissive all you want provided you show an objective result. till then your screen is just as flawed as everyone else.
Mod Warning​
XDA Developers is about free exchange of information, everybody has there own opinion. Calling each other names is not acceptable, if you are unable to respond in a polite manner, then please dont post! This is the only warning you will get!
I have cleaned the thread!​
EarlZ said:
here is an example that hopefully may enlighten you people with self proclaimed perfect screens
Click to expand...
Click to collapse
Are those dark rings one of the issues that everyone is complaining about? If so, I'll have to look at my unit, but I suppose I've just been extremely lucky. I have yet to notice any issues. That's not to say there aren't any issues with my device (possibly), if I look really hard, in very specific conditions
I do not have any black blotches or whatever.
One of the issue I have is the gray screen. It has somesort of texture on it but it's tolerable since it looks like a texturized wallpaper. No problems with playing videos at all, everything looks crisp and clear. So far I am enjoying it.
Also, another issue is the camera. When I am around those long florescent lights, there seems to be some wavy things on my screen. Even on video. I guess I got to avoid those lights in taking pictures. Haha.
Jade Eyed Wolf said:
Are those dark rings one of the issues that everyone is complaining about? If so, I'll have to look at my unit, but I suppose I've just been extremely lucky. I have yet to notice any issues. That's not to say there aren't any issues with my device (possibly), if I look really hard, in very specific conditions
Click to expand...
Click to collapse
That Image i used came from the Tab7.7 forums which shows the issue and practical scenario at the same time. Its an example of the darker blotches in blacks, not really the main issue on the Galaxy Note but one of the many possible yet rare issue.
On my end, my first screen had some blotches but they were not visible when I watch a movie or read an ebook from the kindle app, the 2nd screen I had did have a home button sized like blotch at the bottom which was visible when reading ebooks unless a text is close to it, in movies/shows it is only visible when the entire screen goes black.
EarlZ said:
...
Using the Kindle application for reading ebooks gives you the option to use a black background now some screens have very visible blotches even if there is a text on the screen and they are become unoticeable when there is a text above them, this of course matters to someone who reads ebooks in their bedrooms w/o any external light source or to someone who watches movies like me. You see if we ask someone to open kindle and load up something and do this and do that, it makes the 'testing' more subjective rather than just test it in a pitch black room with a black image displayed.
....
Click to expand...
Click to collapse
after seeing your picture, i want to test my note. i use a small chamber without a window and close the door, so its absolute dark in there. i take a picture from the screen of my note while using kindle with background set to black. i use my lumix dmc-fx01 digicam to take the picture. am i just lucky with the screen of my note, or did i something worng while testing?
EarlZ said:
That Image i used came from the Tab7.7 forums which shows the issue and practical scenario at the same time. Its an example of the darker blotches in blacks, not really the main issue on the Galaxy Note but one of the many possible yet rare issue.
On my end, my first screen had some blotches but they were not visible when I watch a movie or read an ebook from the kindle app, the 2nd screen I had did have a home button sized like blotch at the bottom which was visible when reading ebooks unless a text is close to it, in movies/shows it is only visible when the entire screen goes black.
Click to expand...
Click to collapse
Once again, I guess I have been extremely lucky with both my Note and my 7.7, because I have yet to notice any of these issues with either
Black clipping and banding = software. Therefore, irrelevant from a hardware perspective.
The splotches that you see in the most dark of conditions are the artifacts of the manufacturing process. Under normal 0% brightness (without using additional apps like screen adjuster) you will not be able to see these things assuming you've got a good screen.
The only things you need to look out for is color unevenness and brightness unevenness and in some cases, the manufacturing process is so prominent that it seeps into the normal brightness (0% and up range) and it is visible.
The fastest way to tell if there is something wrong is to turn off all auto-lcd power management, set the brightness to 0%, and to simply pull down the notification menu and view it in a dark place. That'll reveal most of the problems that you might find in a day to day situation. If you see nothing there and the screen looks crisp, don't bother looking for more. They will not appear in normal real-world situations.
No blotches on mine. Very happy with the quality. The color profile seems nicer than on my i9100. The only screen I had with noticeable blotches (only seen at full darkness) was on my T989.
So ya, very happy with my Note's screen. White International N7000
The witch hunt started with the original sgs and continues with the note.
Im on my second note plus a screen replacement and screens are flawless. Yes there is somme banding on all of amoled screens. Its partially software because running ics alpha build, most of the banding is gone.
Sent from my GT-N7000 using xda premium

[Q] Yellow Tint & Brightness issues (again!) - Why??

I know there are other threads that discuss this topic (somewhat) but I wanted to post this separately because what I'm asking is very specific.
I've had about 8 separate Nexus devices from Google Play in the UK and every one of them has had the same issue:
The display has had a noticeably yellow but admittedly slight (possibly slightly brighter) tint on the bottom and left edges, while the right edge has been dull/dark.
This is specific because there are other and numerous reports of a yellow "tint" across the whole screen. This is not the whole screen, this is very clearly just the bottom third and left edge of the screen.
Some think that this is a "glue" issue that will resolve itself. Some think it won't get better. Some think that it's an issue they can live with. Some can't stand the lack of uniformity.
Well I can't stand the lack of uniformity because in my opinion, on a 4.7 inch screen, I find it distracting to be reading text on a solid background or white and the "white" or background colour changes as I read right to left or top to bottom. I consider a decent amount of uniformity to be a minimum requirement for devices which will be used in the way most of us use our phones and tablets. Manufacturers, seemingly, don't care at all except in the most extreme of cases. It looks like they are churning out whatever they can get away with. In all other aspects, the N4's screen is fantastic.
There's nothing anyone here can really do to help directly but it leads me to a question I haven't been able to find the answer to anywhere by Googling or searching other forums:
What is the cause of this lack of uniformity on these LCD panels? It seems to be LCD specific. As mentioned, some think it's "glue" but then others say not and in my experience the tint issues haven't gotten any better in the time I've had the devices that have passed through my hands.
I don't think it's the LED backlighting but could it be something to do with that?
Does anyone know, from a technical point of view why LCD panels are so prone to this issue with the yellow tints across *part* of the display. It's a very widespread thing as it's been noted on most of the iPhone range and a lot of other handsets too. Is there something inherently difficult for panel manufacturers (in the N4's case, LG) to do to make the panel evenly toned and lit? Surely it can't be that hard at this stage in the development of LCD tech once the manufacturing process is "calibrated" at the factory and underway? I assume these handsets are assembled by robots, not by hand. Is that right? Why is it so widespread? Is it a cost issue? Would I have a better chance of a quality panel by buying a more expensive handset? (Although I've seen many HTC One X's with the same problem - I did see one which was almost literally "perfect" in uniformity and brightness). I'd really appreciate any feedback on this. I know that because it's the "norm", sadly, the common response is to now "accept" the panels and handsets that are out there. There doesn't even seem to be a "higher end" manufacturer where high quality uniformity is more likely - or is there?
Anyone with a good/strong knowledge of LCD tech or the manufacturing process out there that can explain this?
Thanks!
***UPDATE***
I've now attached an illustration to show what I mean. ***It's exaggerated a bit*** to show the effect but illustrates the problem clearly.
Have you tried using a custom kernel to tweak the colors of the screen? The Nexus 4 is known for it's washed out colors so using a custom kernel like Trinity or Franco kernel allows you to tweak the color of the screen to your desire. Of course you will need an application to tweak the colors.
LG is known for light bleeding and or panel uniformity issues, I had to swap 4 LG tvs before I decided to go with Panasonic , my LG ips monitor that im typing on right now for my pc has light bleeding in some areas which results in low contrast. I saw about 13 different optimus g devices before I got the nexus 4 and the screens are beautiful with good contrast, punchy colors and good black levels with no light bleeding or weird tints while my nexus 4 has slight light bleeding right where the signal bar is located. I love this phone and its seems to get the " perfect " one you maybe have to swap a few times and to me the price kind of fits the quality of the phone but then I almost have enough spare cash to buy another one lol can't complain about that.
demorik said:
LG is known for light bleeding and or panel uniformity issues, I had to swap 4 LG tvs before I decided to go with Panasonic , my LG ips monitor that im typing on right now for my pc has light bleeding in some areas which results in low contrast. I saw about 13 different optimus g devices before I got the nexus 4 and the screens are beautiful with good contrast, punchy colors and good black levels with no light bleeding or weird tints while my nexus 4 has slight light bleeding right where the signal bar is located. I love this phone and its seems to get the " perfect " one you maybe have to swap a few times and to me the price kind of fits the quality of the phone but then I almost have enough spare cash to buy another one lol can't complain about that.
Click to expand...
Click to collapse
Thanks for the reply. I've heard elsewhere that LG specifically seems to have poor quality panel uniformity. I think LG panels are used by Apple who have had many, many reports of panel yellow "tint" issues on both their iPhone and iMac range. It seems to affect screens big or small. Having said that, HTC had similar problems and their panels were manufactured by Sony. I would *love* to know what's causing this or what is the reason for the yellow "tint" issue on part of the screen.
scream4cheese said:
Have you tried using a custom kernel to tweak the colors of the screen? The Nexus 4 is known for it's washed out colors so using a custom kernel like Trinity or Franco kernel allows you to tweak the color of the screen to your desire. Of course you will need an application to tweak the colors.
Click to expand...
Click to collapse
I have done all of that and with some success with all of the handsets I've had but because the tint affects only part of the screen in a sort of gradient - the calibration cannot fix it.
I'd much prefer a screen that had a yellow "tint" evenly across the whole screen then of course I could calibrate accordingly.
alsheron said:
I've had about 8 separate Nexus devices from Google Play in the UK and every one of them has had the same issue:
Click to expand...
Click to collapse
You've had 8 different Nexus 4's?
yellow patches is from the glue used in the optical lamination process, yellow tint is from the display calibration which is often used to reduce banding and gives more saturated/warm look to colors
if your device is affected by by visible yellow patches the only cure is to re-calibrate the display to reduce the effect and don't get the device too hot as it may increase it
DynamicRam said:
yellow patches is from the glue used in the optical lamination process
Click to expand...
Click to collapse
Not that I don't believe you, but could you link me to the source of this theory?
DynamicRam said:
yellow patches is from the glue used in the optical lamination process, yellow tint is from the display calibration which is often used to reduce banding and gives more saturated/warm look to colors
if your device is affected by by visible yellow patches the only cure is to re-calibrate the display to reduce the effect and don't get the device too hot as it may increase it
Click to expand...
Click to collapse
Sorry but this is not what my OP is about. I do not have a uniform tint and therefore it cannot be to do with "calibration" of some sort unless I am mistaken. Neither do I have "patches" or "spots". This is very specifically about a gradient yellow "tint" that only affects part of the screen and trying to find out the technical reason(s) for its prevalence in a wide range of LCD screens used in mobile phones and of course the Nexus 4 in particular. I've updated my original post to include an illustration of the effect I'm asking about. Thanks!
I am pretty sure its a hardware fault and i assumed you tried to return it otherwise there is nothing else you can do so i suggested calibration to reduce the effect
I had the same issue, then flashed custom ROM and it was fixed. Go figure :silly:
stevenhw8 said:
I had the same issue, then flashed custom ROM and it was fixed. Go figure :silly:
Click to expand...
Click to collapse
hi stevenhw8, can U give me name and link to download your custom ROM? thank you.

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