Database Users

New Galaxy S2 Batch Better Screen

I have bought 2 Galaxy S From the first batch for me and my.
Now I just purchased one for my father.
And his screen is much better, may be it is just the calibration
But the color seem more bright, vivid and white.
the color of mine is more yellow.
Just a thought
May be Samy improve for the last batch

No pictures and it didnt happen..
Sent from my GT-I9100 using Tapatalk

mine is very white as well, I have seen the ones with yellowing and mine doesn't have it.

May be is only that i don't have chance and the 2 first i get is like that.
In fact i don't see a band like other thread mention, it just like calibration thing.
But it is ok, if i haven't see my dad's one i would never notice
i don't think picture would reveal that small details, and will send his phone to the dad day.
Thx

Have you checked the Settings>display> Background Effects to verify both are on the same setting, and yours isn't on movie?

I read somewhere that some specific models have a yellowish colour problem on the screen..
This really shouldn't be normal, so my best answer is to send it in for repair

No yellowing on mine all looks good.

Are both phones using the same brightness settings?
On my phone, when the brightness is low, whites have a yellow cast, but on full brightness, they look very good.

Mine is white as well. No yellowish color or pink spots on camera shots.
Sent from my GT-I9100 using XDA Premium App

Stonos said:
Are both phones using the same brightness settings?
On my phone, when the brightness is low, whites have a yellow cast, but on full brightness, they look very good.
Click to expand...
Click to collapse
I'm sorry to tell you, but you have the problem
Engadget: "Affected users are reporting that the left side of their Super AMOLED Plus displays have a yellow discoloration, viewable mainly with low brightness -- especially on white and grey backgrounds."
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Source: http://mobile.engadget.com/2011/05/30/is-your-galaxy-s-iis-display-yellow-on-the-left/

bruflot said:
I'm sorry to tell you, but you have the problem
Engadget: "Affected users are reporting that the left side of their Super AMOLED Plus displays have a yellow discoloration, viewable mainly with low brightness -- especially on white and grey backgrounds."
Source: http://mobile.engadget.com/2011/05/30/is-your-galaxy-s-iis-display-yellow-on-the-left/
Click to expand...
Click to collapse
What he described is not the problem that people are facing.
BTW Engadget are simply repeating what people are saying here. They have no information of their own and it was people here mailing them that alerted them to the problem in the first place.

Blue1k said:
Mine is white as well. No yellowish color or pink spots on camera shots.
Sent from my GT-I9100 using XDA Premium App
Click to expand...
Click to collapse
Photos?
Sent from my GT-I9100 using XDA Premium App

I've noticed on mine that the colour temperature gets warmer at lower brightnesses. Also dark grey takes on a brown cast. On full brightness it's perfect though. No left hand side yellow cast either that I can see.

There's 60 pages of discussion on this already and the points you're making have been made there a dozen times. Do we really need another 60 page thread on the exact same issue? In the other thread there's also a code to tell what version of screen you have. It would be interesting to see if the claimed "new batch" has a different version.
http://forum.xda-developers.com/showthread.php?t=1079444

Interresting, Once at home i will check that

Serav said:
I've noticed on mine that the colour temperature gets warmer at lower brightnesses. Also dark grey takes on a brown cast. On full brightness it's perfect though. No left hand side yellow cast either that I can see.
Click to expand...
Click to collapse
May be with time the screen degrade.

My Sgs2 seems a bit too green. But i can't notice too much yellow..
Btw the samoled+ is just awesome..
Sent from my GT-I9100 using XDA App

Just checked my screen first batch from handtech and no discoloration in any brightness setting, might be a bad batch?
Sent from my GT-I9100 using XDA Premium App

The main question arises....HAS THE BANDING issue been rectified...so i can FINALLY go head with my S2 purchase ? I'm hesitant to purchase such an expensive device..KNOWING it has a very obvious banding defect...and it seems samsung is unaware of its existence!

I had to ask this question, when I had my S8500 I always set the Brightness to 0, still the screen was enough bright with vivid colors and good contrast looked very sharp and there was no Bluish tint on the screen. But here with S-AMOLED+ if I set the Brightness to mid level or higher then the screen performs well and probably beat the former screen. But when it's set to Auto brightness it seems that the screen has a bluish effect and the whites are not perfectly white, the pictures are not that crisp like it was on the former one, in this case I'd easily say that former screen was better. Now is this a feature of S-AMOLED+ or problem? In low or 0 brightness it is the S-AMOLED which perform much better but not S-AMOLED+ !

Nexus S 4G screen accuracy

So I took the time tonight to measure the color accuracy of my Nexus S 4G with my equipment. So without further a due:
Luminance
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Color Temperature
Gamma
RBG balance and DeltaE
(All measures used against the Rec709 standard. Using Nexus S with a slightly modified voodoo colors profile)

Cool, looks like the Nexus did pretty well
btw the images aren't loading from me, I have to right click them and open them in a new window to see them.

Pictures should be fixed, or at least showing up as more than just links now.

I have no idea what this means.

Its usually a test done for TVs to see how close your TV is to the reference standards.
In the first picture it tells you how uniform the brightness of the image increases.
The second one is how close the color is to pure white (equal balance between red, blue, and green) at every 10% increase in brightness.
The third graph is gamma. A little harder to explain but this basically shows if the display will appear darker or brighter as a whole.
The final shows the actual outputs of red, blue, and green at each brightness. The lower portion shows how much it deviates from reference.
(Any HT junkies out there, yes I know I'm using the term brightness incorrectly here only to make this more accessible)
Sent from my Nexus S 4G using XDA App

so, do you think you can make a color profile that is in every way perfect?

Not with the kernels I have seen. Most only have one point of change (ie color multipliers in Voodoo). Something perfect would take quite a bit of battery use I would imagine as most image processors that can create "perfect" picture are usually stand alone units costing $1000 plus.
I can also tell you each screen is not the same so what might be a perfect profile on my screen would be different for you. Depending on plenty of things including screen age.
Heres my Voodoo settings I used for the measurements I took
Color profile: Voodoo v1
RGB multiplier:
R=1769117440
G=199667
B=216805280
I did not touch the Gamma settings for the measurements but there is room for change there.

wingman1659 said:
Not with the kernels I have seen. Most only have one point of change (ie color multipliers in Voodoo). Something perfect would take quite a bit of battery use I would imagine as most image processors that can create "perfect" picture are usually stand alone units costing $1000 plus.
I can also tell you each screen is not the same so what might be a perfect profile on my screen would be different for you. Depending on plenty of things including screen age.
Heres my Voodoo settings I used for the measurements I took
Color profile: Voodoo v1
RGB multiplier:
R=1769117440
G=199667
B=216805280
I did not touch the Gamma settings for the measurements but there is room for change there.
Click to expand...
Click to collapse
curious wingman how do i optimize my screen. i would like to learn

Any chance you could do this on a SLCD Nexus?

devmonster86 said:
Any chance you could do this on a SLCD Nexus?
Click to expand...
Click to collapse
Joking right? Lol.
Sent from my Nexus S 4G using XDA App

wingman1659 said:
Heres my Voodoo settings I used for the measurements I took
Color profile: Voodoo v1
RGB multiplier:
R=1769117440
G=199667
B=216805280
I did not touch the Gamma settings for the measurements but there is room for change there.
Click to expand...
Click to collapse
Do you have a specific set of numbers you believe are the best for what is available currently through Voodoo?
Thanks for the great work.

Does the screen have a bluish tint in the whites similar to galaxy s3?

have they improved it? I can't find any close picture comparisons.. Thanks.

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Looks better, but still there. I guess they're doing it to increase screen life or something, but absolutely hate that.
Once I installed Perseus on my Note II, I could hardly believe I'm looking at the same screen. Looks even better than iPhone 5 after calibration

yeah, but note 2 doesn't have pentile, doesn't it have a superior screen?

It does, yeah. But you can still see the bluish tint there. SIII/IV it's more greenish isn't it?
I have no idea why Samsung doesn't use RGB instead, is it because it isn't yet available for high PPI full HD screens?

tuxonhtc said:
It does, yeah. But you can still see the bluish tint there. SIII/IV it's more greenish isn't it?
I have no idea why Samsung doesn't use RGB instead, is it because it isn't yet available for high PPI full HD screens?
Click to expand...
Click to collapse
I believe posters on here claimed cost reasons. too bad.. I prefer the overall design and build, screensize to handset ratio of the s4, but like the htc one screen..

That might not be apparent in normal vision though. S3 has noticeable graininess, but the pixel density on S4 should pretty much settle that IMO.
And I don't know if they took the screenshot with adobe RGB mode or saturated standard mode.
I love SAMOLED, but just wish if they could switch entirely to RGB. Wouldn't mind paying a few extra bucks either tbh if they implemented that on Note 3.

tuxonhtc said:
It does, yeah. But you can still see the bluish tint there. SIII/IV it's more greenish isn't it?
I have no idea why Samsung doesn't use RGB instead, is it because it isn't yet available for high PPI full HD screens?
Click to expand...
Click to collapse
I don't think they can manufacture FHD 1080p yet. At least not in the amounts that the GS4 would demand at a reasonable price.

tuxonhtc said:
That might not be apparent in normal vision though. S3 has noticeable graininess, but the pixel density on S4 should pretty much settle that IMO.
And I don't know if they took the screenshot with adobe RGB mode or saturated standard mode.
I love SAMOLED, but just wish if they could switch entirely to RGB. Wouldn't mind paying a few extra bucks either tbh if they implemented that on Note 3.
Click to expand...
Click to collapse
Yup, two issues: sharpness and color. It looks like the higher resolution overcame the less sharp drawback of pentile, but color tint looks is still there. need to verify what color mode the phone was in though.

welll, just got back from store. htc one's have multiple dipslay with different WB. but the s4 definitely had better WB in my eyes.
http://forum.xda-developers.com/showpost.php?p=40903338&postcount=225

Why is this thread even open ? Amoleds will always have a bluish tint. LCDs always have better whites but suffer on black levels.

KillaHurtz said:
Why is this thread even open ? Amoleds will always have a bluish tint. LCDs always have better whites but suffer on black levels.
Click to expand...
Click to collapse
if you read my response, you'll see that the One has a more bluish tint than the S4.

[Q] Lowering actual panel brightness (below minimum)

Hey guys,
I've searched these forums quite thoroughly, and I haven't found any kernels/ROMs that allow for the display brightness to go past its minimum brightness settings. If you've had an iPhone, you'll know that the iPhone's minimum brightness is so much lower than the Nexus 4's. It makes using it at night so much easier on the eyes.
In all the threads I've come across, people just suggest to use Lux, or any of the other apps that just put a filter over the screen. These just make the screen grey, and just mute the colours - they don't actually reduce the brightness past 0.
I know that lowering the minimum brightness is possible; at least it is on other devices. On the Nexus 7, M-Kernel has a file that you can edit to change the panel's minimum brightness, and on my old Xperia Play, the RootDim app [https://play.google.com/store/apps/details?id=mobi.pruss.superdim&hl=en] allowed lowering the panel's brightness.
So, has anyone come across any kernels/ROMs that actually allow reducing of the panel's brightness past 0?
Oh, and I emailed the guy who made the RootDim app, and he mentioned something about pwm drivers. Does anyone know more about that?
Thanks!

I think I was able to do this on my old phone (HTC Wildfire) using Cyanogen. But no guarantees. Also, no idea if that is still supported or works on the N4...

If it's purely about using it at night I would recommend Screen Filter. I prefer not to mess with forcing my screen to use values outside the tried and tested boundaries set by the manufacturer.
Sent from my Nexus 4 using Tapatalk 4

For what it's worth, the "lowest" brightness by default is 5%. CM lets you adjust this down to "0%" but it seems autobrightness is a little buggy.
edit: nevermind. The range for autobrightness is 5-100 by default. When manually setting brightness, I believe "0" is possible on stock? I agree there are times a dimmer setting would do. Changing gamma settings can get you deeper colors and result in a dimmer looking display. Opposite of the graying you're referring to.

thank me later
https://play.google.com/store/apps/details?id=com.haxor

K3lthuzad said:
...or any of the other apps that just put a filter over the screen. These just make the screen grey, and just mute the colours - they don't actually reduce the brightness past 0...
Click to expand...
Click to collapse
bodom_hc said:
thank me later
https://play.google.com/store/apps/details?id=com.haxor
Click to expand...
Click to collapse
or never

I'm wondering about this too, in bed at night the screen is too bright on the eyes which makes the reading time much less,
on amoled screens its great due to no backlight which doesn't make the eyes tired,
there must be a way to reduce the backlight, but it may make the backlight flicker if undervolted, which would be worse on the eyes

republicano said:
I'm wondering about this too, in bed at night the screen is too bright on the eyes which makes the reading time much less,
on amoled screens its great due to no backlight which doesn't make the eyes tired,
there must be a way to reduce the backlight, but it may make the backlight flicker if undervolted, which would be worse on the eyes
Click to expand...
Click to collapse
Have you tried playing with the gamma settings and dropping the brightness down to 0 manually (autobrightness only goes down to 5%).
Halfbreed is pretty decent and results in a "dimmer" display without washing/graying everything. Only problem is under daylight, it's not effectively as bright.

I'll try messing with the brightness and gamma settings. It's a shame there isn't a better alternative right now.
Maybe, in the future, a developer makes a kernel with this built in (if possible). Fingers crossed! :/

For what it's worth, I think you'll find 0% brightness and halfbreed to be exactly what you're looking for.

Download twilight and try it. It has an option to lower the screen brightness further...
Sent from my Nexus 7 using xda app-developers app

Bumping my own thread:
I talked to the Nexus 7 (2012) kernel dev who managed to lower the panel minimum brightness, and he pointed me toward this:
https://github.com/CyanogenMod/lge-...ch/arm/mach-msm/lge/mako/board-mako-display.c
I'm hoping a Nexus 4 kernel dev will see this (or someone who knows what to do with it). He said it might be possible to do on our displays. Also, go check out M-Kernel if you still have a 2012 Nexus 7.

So, we just need to chance it and compile the kernel?
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Sent from my Nexus 4

We can try. I just don't know how to 1. Change it and 2. Compile a kernel LOL

I will try to do it, will post here if it works
Sent from my Nexus 4

screen brightness

Got the phone for my wife and were both coming from a galaxy s5 and it just seems like the screen is not bright on the highest settings. I cant compare it to another phone because its not sold it store yet where I could play with a demo unit. She says its fine for her but its bugging me thinking I got a defective device.

Really, I actually think its too bright...I want the ability to lower the brightness from its lowest stock setting...

It seems pretty dark to me at the lowest setting. Try turning adaptive brightness off and then lower it yourself.

It gets a lot brighter then the s5. Try turning off adaptive brightness in the display settings. While adaptive is on, the brightness slider is the brightest it will get, not necessarily where it will be set in that lighting. With adaptive off, it actually sets it where the slider is.
Sent from my XT1575 using XDA Premium HD app

annoyingduck said:
Really, I actually think its too bright...I want the ability to lower the brightness from its lowest stock setting...
Click to expand...
Click to collapse
Agreed, 10% is what I use for indoors and that is plenty bright for me, download lux and you can go darker than stock.
Sent from my Moto XPE

The screen on this phone is the brightest I've ever seen. It's downright blinding anything above about 1/3 for me
Sent from my XT1575

Low sensitive eyes? I have brightness set to 20% and find full brightness to be ludicrous speed bright. Jeepers. White on the S5 seems dimmer to me in comparison.

Seems I either have a defective unit or maybe the screen protector she put on is blocking some light. Its a zagg antiglare I believe. I did order a tempered glass one to replace it with. Ill have to take it off and see.

the mxpe display is 715 nits vs 442 on the s5, the mxpe should be one of the brightest displays on market

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This is plenty bright for me... The highest setting is blinding!
Sent from my XT1572 using Tapatalk

Gotta agree with everyone here. The display on this thing is insanely bright.
Sent from my XT1575 using Tapatalk

Pretty sure u have adaptive display on. Turn that thing off and you'll see how bright it actually is.

I have adaptive display off. Side by side the s5 is a tad brighter. Wont take the antiglare screen protector off till the new one gets here. If its still dim I'm going to call moto for a replacement. Droid-lifes reveiw unit seemed to have a dim display too they mentioned it in the reveiw

I must say I have to agree with what everyone else is saying--the display is very bright, too bright for most indoor usage at even 50% imo.

sh33z0r said:
the mxpe display is 715 nits vs 442 on the s5, the mxpe should be one of the brightest displays on market
Click to expand...
Click to collapse
Where did you find the MXPE is 715 nits? I have been searching for any review talking about realistic nits but haven't found anything.
The S5 gets way brighter than 442 when using the Auto Brightness feature. The S5 actually gets up into the 700 range in nits.
http://www.displaymate.com/Galaxy_S5_ShootOut_1.htm

CZ Eddie said:
Where did you find the MXPE is 715 nits? I have been searching for any review talking about realistic nits but haven't found anything.
The S5 gets way brighter than 442 when using the Auto Brightness feature. The S5 actually gets up into the 700 range in nits.
http://www.displaymate.com/Galaxy_S5_ShootOut_1.htm
Click to expand...
Click to collapse
Phone arena just did a Pure verses 6Plus comparison and showed the Pure at that nits level. 715 nits

http://www.phonearena.com/reviews/Apple-iPhone-6s-Plus-vs-Motorola-Moto-X-Pure_id4104

chrisund123 said:
View attachment 3503811
This is plenty bright for me... The highest setting is blinding!
Sent from my XT1572 using Tapatalk
Click to expand...
Click to collapse
Mine is set at half of what yours is currently at or even a 1/4 of it.

Bright setting on LCD or Amoled is a big hit on battery life.

zer071 said:
I have adaptive display off. Side by side the s5 is a tad brighter. Wont take the antiglare screen protector off till the new one gets here. If its still dim I'm going to call moto for a replacement. Droid-lifes reveiw unit seemed to have a dim display too they mentioned it in the reveiw
Click to expand...
Click to collapse
I saw that in the review and it looked insanely dim. Idk if they had a defective device or what, because this is the brightest display I have ever used. I saw people commenting on that review saying the same thing.