Loss of contrast - Xperia Z4/Z3+ Q&A, Help & Troubleshooting

Anybody else who is kind of experiencing loss of contrast in the Z3+? Mine is Z3+ Dual.

What do you mean?
Sent from my E6533 using XDA Free mobile app

angvil said:
What do you mean?
Sent from my E6533 using XDA Free mobile app
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The screen. Mine is sometimes losing contrast. Well, I can say it's contrast not brightness as the brightness level isn't changing.?

Yes there is a lot of white on display you'll notice especially if you have black icons on home screen

Patricmac said:
Yes there is a lot of white on display you'll notice especially if you have black icons on home screen
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So it's just normal?

Me too my black levels are more like grey

ermond012 said:
The screen. Mine is sometimes losing contrast. Well, I can say it's contrast not brightness as the brightness level isn't changing.
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From what I have experienced, it only happens when in very bright areas, for example direct sunlight or offices. The phone boosts the image brightness in the darker areas for better visibility in bright situations. This is a kernel thingy, and I thought it could be a part of the X-Reality engine too, but "disabling" it in the settings doesn't disable the contrast change. Is this your experience, too?

As I know, it is something related to Qualcomm technology, known as Assertive Display. Maybe this can help you understand. https://www.qualcomm.com/news/snapd...ay-power-efficient-technology-thats-easy-eyes

2minuutes said:
From what I have experienced, it only happens when in very bright areas, for example direct sunlight or offices. The phone boosts the image brightness in the darker areas for better visibility in bright situations. This is a kernel thingy, and I thought it could be a part of the X-Reality engine too, but "disabling" it in the settings doesn't disable the contrast change. Is this your experience, too?
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I have experienced exactly what you described too!

It's the assertive display playing up. I disabled it at one point but reverted back as it works so well apart from these instances.

Related

Screen too bright for use in the dark?

Am I alone here when I say i'd like to be able to dim this thing a lot more, occasionally?
Thus far I can't find a way to do so. Does anyone know of a way to dim the screen beyond the limitations of the brightness settings?
Sent from my GT-N7000 using xda premium
you are not alone, I run at 0% brightness all day and God knows i want even darker at night
Same here. At night i sometimes think the brightness has been turned up. I use at it around 10% during the day and it feels it is way too bright at night
Sent from my GT-N7000 using xda premium
download "screen filter" from the market.
Sent from my GT-N7000 using xda premium
bendoe91z28 said:
download "screen filter" from the market.
Sent from my GT-N7000 using xda premium
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You got there before me Bendoe, yep, Screen Filter works a treat people, just be sure not to set it too low when you first use it, else you won't "see" anything if you do lol.
Sent from my GT-N7000 using Tapatalk
Also I recommend running a program with a 'night mode'
- Frank
bendoe91z28 said:
download "screen filter" from the market.
Sent from my GT-N7000 using xda premium
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totally worked!
I am still awaiting my Galaxy Note, but perhaps the following could offer a solution.....
[MOD]Lower Auto-Brightness levels to save battery
This is a mod for the Galaxy S 2 but in theory the method should be ok to apply to the Note. However that said, I have not tried it on the Note (or successfully on my S2 as I always have trouble recompiling the apk) but hopefully it could help some as by applying the mod you can change the default 'lowest value' of auto-brightness from something from around 35 to 5 (on a scale from 0-255) making it light up less in dim environments.
cd993 said:
I am still awaiting my Galaxy Note, but perhaps the following could offer a solution.....
[MOD]Lower Auto-Brightness levels to save battery
This is a mod for the Galaxy S 2 but in theory the method should be ok to apply to the Note. However that said, I have not tried it on the Note (or successfully on my S2 as I always have trouble recompiling the apk) but hopefully it could help some as by applying the mod you can change the default 'lowest value' of auto-brightness from something from around 35 to 5 (on a scale from 0-255) making it light up less in dim environments.
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Click to collapse
That worked on my NOTE with my KKA ROM! My auto brightness is MUCH better now. Thanks!
ookba said:
That worked! My auto brightness is MUCH better now. Thanks!
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Glad to of helped out!
So to anyone else reading this with the same issue.......follow suit!
The native web browser has 3 energy saving settings that make the screen even darker than 0 brightness, but there's no such setting for the screen in general. I agree that the screen in this device is incredibly bright, and in complete dark you could turn it down a lot more. I'm typing this by daylight with screen brightness at minimum and I find it enough. Of course you need more if the screen is directly on the sun light, but no screen can compete with a nuclear furnace 1 million km wide.
I don't see why people would want to have such a dim screen on their phone, 10% and below also...
What is the point in having a gorgeous nice and bright Amoled screen only using it at 0% brightness?
It's like me buying a Lamborghini and never going any quicker than 50mph...
The Note has such a wonderful screen and it's such a waste when it's dim most of the time...
My screen is on 90% brightness 24/7 and I get 2-3 days use out the phone.
Running my Note with 10 or 20% will get me an extra day or two out the battery but then it means looking at an ugly, dark & very dim screen...
kanej2006 said:
I don't see why people would want to have such a dim screen on their phone, 10% and below also...
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Maybe because it IS subjectively too bright in certain scenarios? Like at night for example? (The key work being subjectively.)
And for some, the battery life is more important than somewhat nicer looking screen - I find the screen good enough even at low brightness. The colour rendering naturally suffers, but it's not too bad.
kanej2006 said:
My screen is on 90% brightness 24/7 and I get 2-3 days use out the phone.
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Even at night...? I can't imagine looking into this 5.3" flashlight at night I feel sorry for your eyes
Pete
kanej2006 said:
I don't see why people would want to have such a dim screen on their phone, 10% and below also...
What is the point in having a gorgeous nice and bright Amoled screen only using it at 0% brightness?
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Well I use it at lowest stock setting 24/7 and it is too bright to my eyes for most situations.
It's like me buying a Lamborghini and never going any quicker than 50mph...
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I didn't buy the note for its screen only
My screen is on 90% brightness 24/7 and I get 2-3 days use out the phone.
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Sounds like you don't use it enough I can't get 1 full day (16 hours) with mine at minimal brightness (and no it is not a wakelog or something I use it a lot)
Running my Note with 10 or 20% will get me an extra day or two out the battery but then it means looking at an ugly, dark & very dim screen...
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A dim screen is not ugly, at least not to my eyes
Haha, I love the screen and even at night I love the colours/brightness to be STRONG.
Any less than 50% brightness is too dark for me..
Maybe it's coz I sit a few feet away from my 32'' LED IPS TV & therefore I'm used to bright screens...
I just tried the screen brightness on 0% and it looks terrible, weak and washed out colours, I dunno how others are saying it's still too bright...
How do you guys do it?
kanej2006 said:
I don't see why people would want to have such a dim screen on their phone, 10% and below also...
What is the point in having a gorgeous nice and bright Amoled screen only using it at 0% brightness?
It's like me buying a Lamborghini and never going any quicker than 50mph...
The Note has such a wonderful screen and it's such a waste when it's dim most of the time...
My screen is on 90% brightness 24/7 and I get 2-3 days use out the phone.
Running my Note with 10 or 20% will get me an extra day or two out the battery but then it means looking at an ugly, dark & very dim screen...
Click to expand...
Click to collapse
in complete darkness, at 0% this screen is way too bright. it is absolutely terrible for your eyes to look into it when the lights are out and one absolutely needs some way to dim it further. i can tell you that if you think otherwise, you are damaging your eyes and might want to reconsider how you view screens in general.
best,
jason
I sometimes use my phone in bed at night and on the lowest setting the screen is too bright. It lights up the room and makes it difficult for my girlfriend to sleep. So I found some screen dimming apps and I'll use one or more of them at the same time to significantly dim the screen to an acceptable level.
The main one I use is adjustable: BackLightFilter
Others: Screen Filter, Dimmer (Night Mode)
I really wish CyanogenMod was available for the Note. It contains a Render Effect which lets you turn off red, green, blue, or a combination of those from your screen. I'd leave only red on for good night viewing. Anyone know of an apk or other way to implement this function without having it baked into a ROM?
kanej2006 said:
I just tried the screen brightness on 0% and it looks terrible, weak and washed out colours, I dunno how others are saying it's still too bright...
How do you guys do it?
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If you are just reading, a book, or xda, it really doesn't matter what the colors are. It is annoying for many to read on a brightly lit screen. This is why the original kindle continues to sell well.
I did the white on black mod for opera and its my preferred browser now.
maxh said:
I really wish CyanogenMod was available for the Note. It contains a Render Effect which lets you turn off red, green, blue, or a combination of those from your screen. I'd leave only red on for good night viewing. Anyone know of an apk or other way to implement this function without having it baked into a ROM?
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Chainfire 3d.. do it custom as well.. he even has an add on to do auto switching..
fards said:
Chainfire 3d.. do it custom as well.. he even has an add on to do auto switching..
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Excellent, thanks! I even have a home screen toggle for it now, something I wished for on CM7.

[Request]how to regulate white and black

Hi, I read about an application or a .zip to change black and white on XZ, where can I find?
EmeraldTimer said:
Hi, I read about an application or a .zip to change black and white on XZ, where can I find?
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Are you talking about a screen calibration app?
If so, see this thread
White Balance APK
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alnikki25k said:
Are you talking about a screen calibration app?
If so, see this thread
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Thanks! is usefull?
EmeraldTimer said:
Thanks! is usefull?
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Yes it is! My screen's white doesn't turn a bit yellow anymore
EmeraldTimer said:
Thanks! is usefull?
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It is useful for color calibration, but not for the contrast. So the blacks will stay the same. The whites on the other hand, can be changed.
exmatproton said:
It is useful for color calibration, but not for the contrast. So the blacks will stay the same. The whites on the other hand, can be changed.
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So, is there an application to make the black more black than black?
EmeraldTimer said:
So, is there an application to make the black more black than black?
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No. The screen is a TFT LCD. The light blacks are caused by the leakage of the light behind the crystals. So there is no way to get darker blacks. That's why Amoled screens have the dark blacks. It's all about technique
exmatproton said:
No. The screen is a TFT LCD. The light blacks are caused by the leakage of the light behind the crystals. So there is no way to get darker blacks. That's why Amoled screens have the dark blacks. It's all about technique
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uhm thanks you ^^
exmatproton said:
No. The screen is a TFT LCD. The light blacks are caused by the leakage of the light behind the crystals. So there is no way to get darker blacks. That's why Amoled screens have the dark blacks. It's all about technique
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The only thing you can do is to set a lower backlight level. In my impression the auto settings for backlight is not working to good, especially in low ambient light conditions. Install a third party backlight controller, like Lux Pro from the market. Then you can fin tune your backlight settings for all lighting conditions.
Black will then become more "black" due to lower backlight level in most conditions.

[Q] Screen calibration - Amoled colors

Resource exists to calibrate the colors of the Moto X 2014 screen?
Leave the most accurate colors, such as white IPS Display. There is possibility? With which resource?
I thank for the help.
I am sure a future modified kernel will allow for color calibration.
knitler said:
I am sure a future modified kernel will allow for color calibration.
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Is this right?
I did not see this possibility in Moto X 2013.
Andreqkz said:
Is this right?
I did not see this possibility in Moto X 2013.
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Moto X never really got a whole lot of dev support like most Flagships so probably just no one cared to do it.
Sorry for reviving a thread, but I am quite interested in this subjust considering my screen has the yellow tint. I think out best hope is that faux already has a github branch opened for creating a kernel for our device which most likely will support screen calibration like his kernel for other devices, I also believe he has an app on the play store for doing so for devices that support it.
If you search for screen adjuster in the play store, you will see several apps that can adjust tint, white balance, etc. Not as good as if you were able to do at the kernel level, but...
Any developer interested in creating this resource?
The screen colors " Moto X " are horrible When I compare with other models: Galaxy S5, LG G2, Sony Z3 / Compact...
Andreqkz said:
Any developer interested in creating this resource?
The screen colors " Moto X " are horrible When I compare with other models: Galaxy S5, LG G2, Sony Z3 / Compact...
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I use CF Lumen to fix the colors. Works pretty well. I adjusted the color temp so whites are actually white now.
But it is the same thing as a kernel with this feature?
Have you used Color Control in a Kernel on another smartphone? It works the same way with this CF Lumen application?
Andreqkz said:
But it is the same thing as a kernel with this feature?
Have you used Color Control in a Kernel on another smartphone? It works the same way with this CF Lumen application?
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No. But it helps.
_MetalHead_ said:
I use CF Lumen to fix the colors. Works pretty well. I adjusted the color temp so whites are actually white now.
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Wow. Good find! This is the ONLY app I have found that actually *decrease* RGB channel levels with respect to base levels. All other apps only increase levels. By increasing channels, you wind up removing those inky black on AMOLED screens. So, when your brightness levels increase, the blackness takes on the color of the increased color channel, which of course is bad.
I do question your method of removing the yellowish whites of the Moto X. The color temp adjuster slid all the way to the right at 6500 is essentially no filter at all, as its the default color temp. Moving it to the left warms up the white balance, but doesn't result in whiter whites. What I found to improve whiteness was to keep the white balance at 6500, but in the color channels, reduce both RED and GREEN channels to 0.949 and 0.937, respectively. I just keep these settings around the clock and don't make use of all the other filters.
So, this is the only app that I've found where you can maintain your inky blacks while actually *raising* the color temp, or at least raise BLUE levels with respect to the other 2 channels.
floepie said:
Wow. Good find! This is the ONLY app I have found that actually *decrease* RGB channel levels with respect to base levels. All other apps only increase levels. By increasing channels, you wind up removing those inky black on AMOLED screens. So, when your brightness levels increase, the blackness takes on the color of the increased color channel, which of course is bad.
I do question your method of removing the yellowish whites of the Moto X. The color temp adjuster slid all the way to the right at 6500 is essentially no filter at all, as its the default color temp. Moving it to the left warms up the white balance, but doesn't result in whiter whites. What I found to improve whiteness was to keep the white balance at 6500, but in the color channels, reduce both RED and GREEN channels to 0.949 and 0.937, respectively. I just keep these settings around the clock and don't make use of all the other filters.
So, this is the only app that I've found where you can maintain your inky blacks while actually *raising* the color temp, or at least raise BLUE levels with respect to the other 2 channels.
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I misspoke, I didn't mean color temp. I adjusted the master filter, decreased red and green like you said you did. And same here, that setting stays permanently without anything else. It makes a HUGE difference, my screen is gorgeous now. I'm glad you found as much success with it as I did
Thanks @_MetalHead_ for mentioning CF Lumen. This works so much better than Screen Adjuster Pro (I had been using that until now).
sha_tan said:
Thanks @_MetalHead_ for mentioning CF Lumen. This works so much better than Screen Adjuster Pro (I had been using that until now).
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No prob happy to help!
What Motorola should do is offer screen modes, like samsung does
Chad_Petree said:
What Motorola should do is offer screen modes, like samsung does
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Try CF Lumen. It works wonders.
CF.Lumen has the nasty habit of applying its filters twice when rotating the phone and on the recent-apps screen. So if I calibrate my screen to look just nice, I get a blue tint on those occasions. So I'm constantly reminded of this workaround solution.
I'd rather stick with the yellow tint, trying to get used to it and still hope for a custom kernel to adjust the colors on hardware level. But it looks like nobody is interested in developing for the Moto X 2014... :crying:
mcg33 said:
CF.Lumen has the nasty habit of applying its filters twice when rotating the phone and on the recent-apps screen. So if I calibrate my screen to look just nice, I get a blue tint on those occasions. So I'm constantly reminded of this workaround solution.
I'd rather stick with the yellow tint, trying to get used to it and still hope for a custom kernel to adjust the colors on hardware level. But it looks like nobody is interested in developing for the Moto X 2014... :crying:
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Weird, I don't have that issue at all.
Sent from my iPhone 6 using Tapatalk
It's not an issue, it's just how the app works.
Chainfire himself confirms it in his thread about CF.Lumen:
http://forum.xda-developers.com/showpost.php?p=51827433&postcount=74
It might be less noticeable if your filter settings are very low.
Everybody talks about removing the yellow tint, but what about toning down the saturation? I find it ridiculously fake, the google music app and tapatalk app look so cartoony with the stock saturation, could I tone it down with cf lumen?

[Tip] better screen color.

Okay so I been feeling unhappy with way my screen looks. The pink tint has been annoying me. I turned off the live display because it was crap IMO. I noticed in the menu of livedisplay an option called color calibration. Duh. I'm sure a lot of you know this but. I'm also sure a lot of you don't. Pink is red. Drop red to 97 and the picture looks so much more realistic and yes. Less pink.
Sent from my Nexus 6 using XDA Free mobile app
Thanks for the tip :good:
whozilla said:
Okay so I been feeling unhappy with way my screen looks. The pink tint has been annoying me. I turned off the live display because it was crap IMO. I noticed in the menu of livedisplay an option called color calibration. Duh. I'm sure a lot of you know this but. I'm also sure a lot of you don't. Pink is red. Drop red to 97 and the picture looks so much more realistic and yes. Less pink.
Sent from my Nexus 6 using XDA Free mobile app
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What and where is live display?
Is it a CM thing? That's the closest a search would lead. I ask, because I'm on stock ROM.
Evolution_Freak said:
What and where is live display?
Is it a CM thing? That's the closest a search would lead. I ask, because I'm on stock ROM.
Click to expand...
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LiveDisplay is a feature on CM roms.
zephiK said:
LiveDisplay is a feature on CM roms.
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Thanks. :good:
Thanks I applied your logic to Color Control since I am on stock rom. It was really hard to lower 1 notch from 255 to 254, the developer should make that better. Anyways I think it looks much better. I increased contrast and saturation slightly as well.

Low brightness - Screen Gamma/Calibration Performance

Does anyone else feel like there's a haze/fog over the screen when the brightness is around 20% or lower?
This seems to be more noticeable on grey backgrounds. White and pure black seem perfectly fine to the eye
It's hard to try and explain?
Could it be the same issue that*plagued the 4 when it originally came out. Gamma/software calibration*needed*possibly?
It seems fairly uniform too, which makes me think gamma issue rather than panel/HW issue?
Has anyone else noticed the same?
yes, i see the same!
Yeah, we discussed a similar behavior in this thread: https://forum.xda-developers.com/pixel-5/help/colours-bit-off-everything-bit-beige-t4179867
For me I do see this "fog" brownish tint in every brightness situation....
Melecatius said:
Yeah, we discussed a similar behavior in this thread: https://forum.xda-developers.com/pixel-5/help/colours-bit-off-everything-bit-beige-t4179867
For me I do see this "fog" brownish tint in every brightness situation....
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Not the same thing. You're on about color profiles in that thread. This is more like a contrast issue at lower brightness levels
Well... than i have both... there’s fog with loss of contrast and there is a „warm“ color calibration.
My P3 shows black areas where the P5 is grey. Plus, white is minimal brownish so i loose contrast.
I come from a Pixel 2 XL with the black crush. In terms of contrast at low brightness levels, the Pixel 5 is far superior.
Undecided whether to keep it or not.
Grey's look really weird compared to my S10e. Nice and dark on the S10 and really light/pale on the Pixel?
Here's a capture of screen uniformity too
https://ibb.co/mcWc5Lw
superleeds27 said:
Undecided whether to keep it or not.
Grey's look really weird compared to my S10e. Nice and dark on the S10 and really light/pale on the Pixel?
Here's a capture of screen uniformity too
https://ibb.co/mcWc5Lw
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Oh wow that's really bad, is it a bug?
Shady282 said:
Oh wow that's really bad, is it a bug?
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Nope. Just the garbage Google send out
Oh wow that's quite bad, mines perfectly fine no issues screen wise

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