Screen color calibration - Nexus 7 Q&A, Help & Troubleshooting

Hey guys,
I just got the nexus 7 for Christmas and so far it's a super awesome device. The only thing I don't like is the screen. If I compare it to the LCD of my Sensation the colors seem plain and washed. Is there any way to recalibrate the display or something of that kind?
Thank you in advance.
Sent from the back of my unicorn

I recommend u to use the app "Filter Your Screen". With changing alpha, blue and red, u can have better coloring.
Or if your device is rooted, to disable PRISM is easier and perfect way to improve coloring. pls refer to the folloing thread.
http://forum.xda-developers.com/showthread.php?t=1815414

Unfortunately it didn't change anything for me.
Sent from the back of my unicorn

Related

White notification bar for sense ROM?

Is there a theme that is like the minamal black but in white? I use Leedroid ROM and I cant seem to locate one at all.
Anyone have any ideas?
the ginger god said:
Is there a theme that is like the minamal black but in white? I use Leedroid ROM and I cant seem to locate one at all.
Anyone have any ideas?
Click to expand...
Click to collapse
I think the white bar would be the easy bit, changing the font colour for clock and notifications could be the hard be as .xml files in the framework would have to be edited. That is beyond the scope of what I could do. There might be someone here who knows where they are kept.
Unfortunately i too can't help you in this case, but i have something to think of for you if you have an AMOLED display...
AMOLED uses nearly no energy for black parts of the screen which is superior to LCD displays. But when showing white pixels, i heard AMOLED uses 3 x more energy compared to LCD.
So, as a sideeffect, the dark sense gui is perfect for energy saving too! ...i also use a dark background!
Thanks for that info
I do have an amold screen. I will revert back to black.
Sent from my HTC Desire using Tapatalk

Black Level Color Depth not Deep Enough ?????

Hey There..
just got my s3 a few days ago, pebble blue vietnam june batch..
Ok now there has been a lot of discussion regarding screen issues like:
1. Tints
2. Ink spots/blothces
3. Black Crush
4. Black/other color Clipping
5. Depth of Black level
I dont have problem 1... Just 2-3 tiny ink spots, so even problem 2 is negligble....i dont have problem 3 and its can be tweaked with software even if one has it..problem 4 i dont care about much...
So, my area of concern is the 5th problem, i.e when compared to an sgs2 or sgs1 , i find that the black levels are not as deep and super black as the former two phones !
Its not really noticable in normal lighting..please check the following in a very dark room or completely dark room...
Using a pure black wallpaper (attached below or use ur own true black wallpaper) , just open it in gallery, it seems extremely dark grey (almost black) and u can tell where the display meets the bezel...
well, even on sgs2 n sgs1 on pure black background, u could see a little backlight, so not perfect black, which is understandable....so here is where the main problem comes...read below..
on a sgs2 or sgs1, When there is text or icons or other stuff over a pure black backgorund, this time the blacks appear black (obviously its due to contrast difference producing the illusion of super black) and one cannot tell where the screen border ends n the bezel starts, it just blends due to the super blacks! This is what i love and want !!
However, this is not the case with my sgs3, the damned blacks still are not perfect black & i can see where the screen borders end and distinguish the bezel & the screen , they dont blend beautifully!
to experience this, in a dark room, on any brightness level, preferably test at 30% screen brightness cause thats what we normally tend to use indoors, atleast i do...
please use this video: http://www.youtube.com/watch?v=KJO88Qhxwv4
(Thanks Tinderbox UK for the link)
or
play and high quality Dexter(Serial) video and see the part right before the intro theme where it says “SHOWTIME presents” (in white text) over a black blackground...
or
In youtube app when any video loads n the black screen comes with loading circle
or
use the pure black wallpaper with few icons on ur homescreen...
in the above cases, u should see pure black and u should not be able to tell where the screen n bezel borders meet..which is what u get on sgs1 n sgs2 screens..and i dont get this result on my sgs3 :-(
On sgs3, its almost black, but u can notice its very slightly gray ! so this is annoying to me since im so used to it appearing deeep black on the sgs1 n sgs2 !
--- So now what i need u guys to tell me is whether most sgs3 panels have this issue or is it just me ???
--- Will software tweaks like Supercurios upcoming “Display Expert” solve it by adding some black color depth adjustment ??
--- Should i take this to the Service Center? but prob is how will i show them the problem in a bright environment ?? and what if they tell me that the super amoled HD variant for the sgs3 is a new tech n differnt from the sgs1 n sgs2 screens and hence not as deep blacks ??
I WANT BLACK man !! i LOVED SuperAmoled cause if JET BLACK !! Help please!
this has been already experienced by many and so far none of the display experts has answered it or havent found the answer yet. in pitch dark environment the screen will look greyish black rather than pure black. i had the same on my s2 too but with a lesser margin.
bala_gamer said:
this has been already experienced by many and so far none of the display experts has answered it or havent found the answer yet. in pitch dark environment the screen will look greyish black rather than pure black. i had the same on my s2 too but with a lesser margin.
Click to expand...
Click to collapse
hey Bala thnx fr replying, but wht im saying is tht, in ur gs3, dont u think its more grayish ?? iv listed the different conditions ...can u check n see?? im not talking about a plain pure black bckground which i agree is a lil grayish n is normal, but im talking bout black with other content on the screen....due to contrast differences n other colors from the non-black content, the black appears actual black as i had in sgs1 n sgs2, but in sgs3, it still does not Appear deep black
i dont thinks so mate, apart from the overall greyishness in full black conditions, i feel the blacks are good enough in images,video etc.
One more thing ,the feel of greyish black in pitch dark conditions may also be due to the fact that the screen border is dead black which makes us feel that the screen is not black enough. sgs2 didnt had this screen border afaik.
Are you looking at your phone the right way. You should be looking it at like this:
bala_gamer said:
i dont thinks so mate, apart from the overall greyishness in full black conditions, i feel the blacks are good enough in images,video etc.
One more thing ,the feel of greyish black in pitch dark conditions may also be due to the fact that the screen border is dead black which makes us feel that the screen is not black enough. sgs2 didnt had this screen border afaik.
Click to expand...
Click to collapse
Yes it is good enuf, but after seeing it much more black on sgs1 n 2, i just cant seem to ignore this trivial issue....hmmm, maybe u have a point there about tht black border, its present all the time right ?
eggman89 said:
Are you looking at your phone the right way. You should be looking it at like this:
Click to expand...
Click to collapse
Man, i tried this Leo Style already, didnt work :silly:...now tell me about ur phone...is it perfect in giving true blacks ?
zyryn said:
Yes it is good enuf, but after seeing it much more black on sgs1 n 2, i just cant seem to ignore this trivial issue....hmmm, maybe u have a point there about tht black border, its present all the time right ?
Click to expand...
Click to collapse
the black border is there always, you can see it from the home screen itself
I am having the exact same issue (or experiencing the exact same ''feature'') What i mean by this is that my SGS2 was pretty much pitch black, this one, not so much, I don't believe it's a ''problem'' though... probably made this way, although I REALLY liked the JET BLACK of the previous Super Amoleds...
simondadiamond said:
I am having the exact same issue (or experiencing the exact same ''feature'') What i mean by this is that my SGS2 was pretty much pitch black, this one, not so much, I don't believe it's a ''problem'' though... probably made this way, although I REALLY liked the JET BLACK of the previous Super Amoleds...
Click to expand...
Click to collapse
yes i really wish the previous experience was there....but some ppl are saying they have real blacks with their sgs3 panels also...so i was wondering if its only for a certain batch of phones...
I want some big name devs to comment on this..if its software related n can be improved...then i wont fret about it so much...
some users in gnex forums said that maybe the voltage levels to the the 720p HD screens are lil higher and hence maybe the blacks are not completely dim, n emitting a lil light..
dam, i want some expert analysis on this !!
Depend on your way using smartphone . With me, almost time not using in dark inviroment, so I please with S3 screen .
Of course, display poor black in dark inviroment will be like dark/black gray . S1 seem better
Zanr Zij said:
Depend on your way using smartphone . With me, almost time not using in dark inviroment, so I please with S3 screen .
Of course, display poor black in dark inviroment will be like dark/black gray . S1 seem better
Click to expand...
Click to collapse
Yeah it's no problem in normal lighting....
...dam so even you feel the difference in the dark...cool
Sent from my GT-I9300 using xda app-developers app
The fact that Samsung still have this issue on the S3 indicate that it's a bigger problem that we(the Gnote Owners) anticipated,I was thinking that this problem was only localized to N7000.it's the same sh*t with Gnote but yours is just a bit less noticeable or Samsung tried working on it but failed
Sent from my GT-N7000 using Tapatalk 2
nuramohammed26 said:
The fact that Samsung still have this issue on the S3 indicate that it's a bigger problem that we(the Gnote Owners) anticipated,I was thinking that this problem was only localized to N7000.it's the same sh*t with Gnote but yours is just a bit less noticeable or Samsung tried working on it but failed
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Damn ...so it seems llike most of Samsung's amoled HD displays have this issue...but still the poll on first page is 50-50...means some phones are perfct ...that's the annoying part...if all were with this issue I wouldn't be complaining that much...
This is true, so do you have an idea how we can tackle this problem, cos we need solution asap
Sent from my GT-N7000 using Tapatalk 2
I loved my SGS2 pure black screen...the next SGS4 will have black worse than HTC One XX of the year 2013 LOL did anybody contact author of display expert??? Maybe its possible to somehow lower the voltage of turned off pixels (black color) to do not emit to much light...
nuramohammed26 said:
This is true, so do you have an idea how we can tackle this problem, cos we need solution asap
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
kultus said:
I loved my SGS2 pure black screen...the next SGS4 will have black worse than HTC One XX of the year 2013 LOL did anybody contact author of display expert??? Maybe its possible to somehow lower the voltage of turned off pixels (black color) to do not emit to much light...
Click to expand...
Click to collapse
yes a solution needed man...i havent contacted supercurio, u know to which mode of communication he will respond? i mean so many ppl will be spamming him with issues, how do we get this to his notice??
which other devs can we contact? any idea?
Supercurio started working on the issue since last 6 month but he abruptly stoped.but we have been laying complains to samsung everyday but as you know, they are lou*y when it comes to customer care.nothing yet.
Sent from my GT-N7000 using Tapatalk 2
nuramohammed26 said:
Supercurio started working on the issue since last 6 month but he abruptly stoped.but we have been laying complains to samsung everyday but as you know, they are lou*y when it comes to customer care.nothing yet.
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Oh good to know that he working on it....are there any other display freak devs? ?
Sent from my GT-I9300 using xda app-developers app
The thread he opens about this issue is closed by him so I don't know if he is still working on it.
Sent from my GT-N7000 using Tapatalk 2
nuramohammed26 said:
The thread he opens about this issue is closed by him so I don't know if he is still working on it.
Sent from my GT-N7000 using Tapatalk 2
Click to expand...
Click to collapse
Where is that thread?
Sent from my GT-I9300 using xda app-developers app

Screen calibration?

http://www.displaymate.com/OLED_Galaxy_S123_ShootOut_1.htm
The OLED screen on the GS3 is incredible because of it's intense contrast and instant refresh time, but there a many things wrong with it out of the box, and only because Samsung marketing is driving the settings for it....
The color gamut is too high. It looks good in the store but makes the colors look cartoony, and can decrease lifetime of the display. Is there something that can get it closer to the sRGB gamut used by Android? (90-110% of the gamut)
The autobrightness is very poor in this case, as it does not go low enough in the dark, and does not go high enough in the sun. Has anyone made a mod that has proper autobrightness values, with some middle values turned slightly lower for battery savings?
The white point is very very blue! This makes the display look more white, but this is actually very bad for the display. Since the reason why Samsung needed to have PenTile is because blue pixels die quickly, why is the white so blue? Is there some way to make it properly white (daylight, about 6500k?), in order for better color accuracy and to preserve display lifespan?
At some point, supercurio released a voodoo screen application, but since then I have not seen any sort of application that can properly calibrate the screen...
My cousin has one and it is not like that.. I would return it
Sent from my HTC Velocity 4G using xda app-developers app
For a new one
Sent from my HTC Velocity 4G using xda app-developers app
Hunt3r.j2 said:
http://www.displaymate.com/OLED_Galaxy_S123_ShootOut_1.htm
The OLED screen on the GS3 is incredible because of it's intense contrast and instant refresh time, but there a many things wrong with it out of the box, and only because Samsung marketing is driving the settings for it....
The color gamut is too high. It looks good in the store but makes the colors look cartoony, and can decrease lifetime of the display. Is there something that can get it closer to the sRGB gamut used by Android? (90-110% of the gamut)
The autobrightness is very poor in this case, as it does not go low enough in the dark, and does not go high enough in the sun. Has anyone made a mod that has proper autobrightness values, with some middle values turned slightly lower for battery savings?
The white point is very very blue! This makes the display look more white, but this is actually very bad for the display. Since the reason why Samsung needed to have PenTile is because blue pixels die quickly, why is the white so blue? Is there some way to make it properly white (daylight, about 6500k?), in order for better color accuracy and to preserve display lifespan?
At some point, supercurio released a voodoo screen application, but since then I have not seen any sort of application that can properly calibrate the screen...
Click to expand...
Click to collapse
Samsung anything with a screen is this way. Just go look at this TV, they are bluer than anybody else's. They look good in the bright showroom but in your actual house? Not so much unless you just love blue.
I am guessing a fix can happen in aosp/aokp where they have the screen calibration options.
Sent from my ADR6425LVW using xda app-developers app
nosympathy said:
Samsung anything with a screen is this way. Just go look at this TV, they are bluer than anybody else's. They look good in the bright showroom but in your actual house? Not so much unless you just love blue.
I am guessing a fix can happen in aosp/aokp where they have the screen calibration options.
Sent from my ADR6425LVW using xda app-developers app
Click to expand...
Click to collapse
I just found out about Voodoo Color. Maybe we can get some kernels that work with it?
Hunt3r.j2 said:
I just found out about Voodoo Color. Maybe we can get some kernels that work with it?
Click to expand...
Click to collapse
That'd be great. I am on Verizon tho :/. No custom kernels yet.
I love OLED displays I just hate how.blue they are. Atleast this one isn't as blue per that article as some others I have seen.
Sent from my ADR6425LVW using xda app-developers app
nosympathy said:
Samsung anything with a screen is this way. Just go look at this TV, they are bluer than anybody else's. They look good in the bright showroom but in your actual house? Not so much unless you just love blue.
I am guessing a fix can happen in aosp/aokp where they have the screen calibration options.
Sent from my ADR6425LVW using xda app-developers app
Click to expand...
Click to collapse
As far as TV's go, those are way more easy to tweak display settings on than a phone display. I agree that a showroom Samsung is really really blue, but that is easily fixed in the color settings.
thebrokn said:
As far as TV's go, those are way more easy to tweak display settings on than a phone display. I agree that a showroom Samsung is really really blue, but that is easily fixed in the color settings.
Click to expand...
Click to collapse
Yeah...sorta. lol...
There is a forced level of blue in the service menu you cannot change without proper calibration equipment.
That is beside the point though. I know CM7 had a calibration setting. Does CM9/AOKP have this still? I haven't had a device that could run AOSP in a long time sadly.
Sent from my ADR6425LVW using xda app-developers app

New official screen looks darker

Hello
I had my Galaxy S screen replaced 2 days ago (the new screen is a new one replaced by the Samsung centre)
However I am using CM9 with Semaphore kernel and it looks so dark, like if the colors weren't right.
Any ideas? Playing with the color settings don't have much effect..
Thanks
Did they replaced it with another Amoled screen, or with the Super LCD one? That might be the difference.
Hello
Well, it should be an Amoled, it's a GTI9000
As far as I know, the LCD screen is for I9003, isn't it?
Thanks
Maybe you have voodoo color throwing you off?
Sent from my GT-I9000 using xda app-developers app
Can you take a picture of it? On the settings menu perhaps...
I have galaxy s and s plus, the s plus is brighter than s... sorry for my bad inglish
Hello
This model is I9000 and its screen got replaced by a Samsung Centre recently
Here are the screenshots:
http://www.mediafire.com/?2552rmfow5fn4
How can I find if there's voodoo mod?
I haven't found anything like that in the phone.
Do you know what I can do with it?
I really don't understand why this screen looks darker
albertocastillo2001 said:
Do you know what I can do with it?
I really don't understand why this screen looks darker
Click to expand...
Click to collapse
What about stock rom? Same thing?
Hello
I've just flashed the stock rom yesterday and compared it with a friend who has the same ROM, well, not the same exactly, mine is 2.3.3 and his is 2.3.6
My phone seems to get better when the screen gets brighter, but when is dark, white isn't white, it looks a bit like yellow. So I guess it's the screen or the screen protector I put on it.
However, I really doubt warranty will exchange this new screen since they might not consider it a failure, but it looks extremely ugly..
Thank you.

NEXUS 6 yellow tint fix For the meantime !:D

i hope this help for people whos yelling in the screen because of display ..
Download the Screen adjuster to play store ..
And set to Red 3 green 12 Blue 24 .. now it looks bright ,, but i cant promise that this will fix the yellow tint . because we have different Phones ..
Im just helping you all out .. and i hope you'll appreciate .. this is for the meantime ..
and by the way ,, you will notice the difference color between the screen and navigation Bar ! ..
It makes the screen more cool than warm. It's a nice workaround until rgb and gamma comes.
Sent from my Nexus 6 using Tapatalk
zephiK said:
It makes the screen more cool than warm. It's a nice workaround until rgb and gamma comes.
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
so did you test it ?? is it good ?? also I noticed when you tilt your phone ?you'll see the the true brightness . but when the screen is in front of you .. it becomes tint .
I tried it but I'm still not satisfied with the screen I'm starting to think its just the type of screen that they used..if you tilt the phone to the right or the left the screen looks a lot better but soon as you look at the screen straight forward you see the ugly yellow tint on the screen.I have seen this on 4 different phones.. Thinking of going back to my G3...very disappointed with screen they used on this phone..
I don't think its the screen but rather the screen setting they used
obsanity said:
I don't think its the screen but rather the screen setting they used
Click to expand...
Click to collapse
Correct... and the viewing is subjective depending on what phones we've came from. Coming from IPS, were used to whites being whites whereas AMOLED it isnt that case since AMOLED has richer blacks.
The N6 is just a "warm" temperature when it comes to screens.
GBPackerFanForLife said:
I tried it but I'm still not satisfied with the screen I'm starting to think its just the type of screen that they used..if you tilt the phone to the right or the left the screen looks a lot better but soon as you look at the screen straight forward you see the ugly yellow tint on the screen.I have seen this on 4 different phones.. Thinking of going back to my G3...very disappointed with screen they used on this phone..
Click to expand...
Click to collapse
yeah . this is just for a meantime .. I hate it too .. also the nav bar .. youl notice the difference .. I might return this and go for g3 .. the g3 is great qd . I like the note 4 but I hate touchwizz.
Looks horrible on my screen. You lose "true blacks" with this color temp and looks washed out, which is funny because that's what IPS displays usually look like when compared to OLED tech.
I guess it's all what your accustomed to already, anything else just looks wrong after awhile.
It'll be nice when we get kernels with gamma controls.

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