color change from lock screen to unlocked phone - OnePlus 7T Questions & Answers

Hello, I'm facing a sort of problem. When I look at the locked screen it has a calibration, but when I drop down the quick toggle or I unlock the screen it turns a little bit more yellowish. I don't think it's hardware related but could someone give me an explanation?

I think it's because of the FP sensor. To improve the recognition maybe.

Or it is a bug like the dark theme not being dark in some apps, Chrome, YouTube, Shelf. Top of the screen is less dark, like a little bit green. Not a hardware issue though, settings and built in apps ark dark (Dialler, Messages). I think it is something with the theme settings.

It's all normal. The lockscreen has this colder/blueish tone, like a filter, which goes away after unlocking. Nothing to worry about, not a bug or a defect. Just the way it's designed to work.

Didusieq said:
Or it is a bug like the dark theme not being dark in some apps, Chrome, YouTube, Shelf. Top of the screen is less dark, like a little bit green. Not a hardware issue though, settings and built in apps ark dark (Dialler, Messages). I think it is something with the theme settings.
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I don't think so.
With every app that request fingerprint authentication the color of the screen changes.
It must be something related to improve fingerprint accuracy

I am not talking about the screen with FP scanner active. Just check the dark themed Chrome, Shelf, YT. Especially on the dimmed screen. Upper part is a little greenish. Cannot make a screenshot as it looks ok on it. It has to be sth with theme, as on some apps (dialler, messages, settings) the whole screen is dark (black).
Something like this:
Picture

Didusieq said:
I am not talking about the screen with FP scanner active. Just check the dark themed Chrome, Shelf, YT. Especially on the dimmed screen. Upper part is a little greenish. Cannot make a screenshot as it looks ok on it. It has to be sth with theme, as on some apps (dialler, messages, settings) the whole screen is dark (black).
Something like this:
Picture
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On picture we could clearly see green tint defect

Yep, and it looks like software issue to me.
Screen pics
As you can see, app is a little green, but quick settings are black when dragged down. Screen is fine, I believe.

Didusieq said:
Yep, and it looks like software issue to me.
Screen pics
As you can see, app is a little green, but quick settings are black when dragged down. Screen is fine, I believe.
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Thats because green tint is only visible on certain brightness levels at grey background. No problem on black background

The issue related to the lock screen is present any time the through screen fingerprint camera activates. You will also notice it if you have face unlock active in low light and the screen lights up to assist the front camera in recognizing you. Color spectrum is super important to cameras when they are recognizing things on our skin.

Didusieq said:
Yep, and it looks like software issue to me.
Screen pics
As you can see, app is a little green, but quick settings are black when dragged down. Screen is fine, I believe.
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That apps are not black, are grey. "Dark mode" does not mean "black".
In other way, all amoled panels have (or can have) this kind of behaviours at very low bright level and certain colours (especially grey).
Particularly, I do not see that effect in mine or I just cannot see it.
If you think that is a defect or problem, why not open a repair request to OnePlus?

Related

Another form of banding. Can you replicate?

Set wallpaper to black or go to a pure black screen with no icons on it. Bring up the "recent apps" and clear it out so that the overlay is blank. I notice heavy banding when the app is brought up over a pure black screen. Anyone else notice this?
it's hard to notice in a lighted room. go into a very dark room and you should see what I am talking about.
I've noticed this on transparencies. Could be a low quality image they used. Google has been known to limit the colors available to specific apps. Gallery and the Browser usually display crappy gradients. Perhaps this is another form of lowering the image quality so it loads faster.
As far as what your talking about, yes I can replicate it. Horizontal "sections" about equal distance apart. Hardly noticeable. I have to turn the lights off to really see it.
As long as the screen looks amazing when I'm using it and not in a dark room at weird brightnesses, I'm happy. This screen is super vibrant and bright. Who cares about a little banding on an almost black transparency that is requires a pitch black room to see.

Display getting darker when scrolling

Hello!
I recently got the Arc S and I love it, but there's something about the screen that freaks me out. It's hard to describe, but let me try.
When I scroll through menus, objects get darker while they move. Most notibly when there's white text on black background. I don't know many of you know it, but it's like applying the "inner shadow" filter to the fonts in photoshop.
I made a video to demonstrate that: http://www.youtube.com/watch?v=VVRTmsr6Ppg
Hopefully you can see the effect on the text, but it's very noticable that the lines between the items disappear while scrolling.
While on a grey background, text appears yellowish while scrolling.
I get a similar effect when I scroll through pictures.
Other than that, the screen is perfectly fine. I have a Neo V here with the same rom and kernel and there is nothing like that.
Or is this just normal screen behaviour I have to get used to?
What rom are you on?
Sent from my LT15i using birds.
if you look clearly at the screen, it is not getting darker! just the lines between the selectable touch fields are getting darker. dont know why but this problem is on all roms i have tested. it happens at small text and very small lines (1-2 pixel lines i think)
@TheHaso
Super Jelly Bean, Slim Bean, Ultimate HD.. It doesn't seem to matter.
@om22
So you think this is a software issue?
I noticed when I scroll through small turqoise text, it clearly gets darker and shifts into a more blue-ish tone.
neo2k12 said:
@TheHaso
Super Jelly Bean, Slim Bean, Ultimate HD.. It doesn't seem to matter.
@om22
So you think this is a software issue?
I noticed when I scroll through small turqoise text, it clearly gets darker and shifts into a more blue-ish tone.
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no i think this is normal on tn-panel lcd screens (our arc/s). just a dark blurring effect i think.
If you want to get some information about TN displays vs IPS etc just follow the link:
http://en.wikipedia.org/wiki/Liquid_crystal_display#Twisted_nematic_.28TN.29
it's normal. only the lines get darker and not the text. this is how android makes it. try to increase the brightness and you will see that the lines gets a little darker.
But this effect does not happen at all on the Neo V.
And of course the text is getting darker, too. As I said, on black background a turquoise text shifts to blue while scrolling.
neo2k12 said:
But this effect does not happen at all on the Neo V.
And of course the text is getting darker, too. As I said, on black background a turquoise text shifts to blue while scrolling.
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maybe because the neo v has built in another display? Our display also is very blurry in my opinion (high response time)

Night mode isn't as dark

Lying in bed last night I turned on Night Mode. I noticed when I pulled down the notification shade, the top portion was still dimly back lit, so I could see the camera cutout and the edges of the screen, no matter how much I dim the backlight.
Well tonight I fired up my Note 9, put it on Night Mode and pulled down the notification shade, and no matter how bright or dim I have the screen, the top part is BLACK. no light. You can't see where the screen ends and the frame begins.
This isn't a huge deal except for battery savings. When an AMOLED screen is true black, those prices shut off. But since the night mode on the N10+ isn't true black those pixels are still lit up and using power.
When viewing video in Netflix or YouTube the black bars are truly black, so I know the screen is capable showing true blacks, I'm just not sure why Sammy changed Night mode so it's no longer truly black.
I have just experienced the same thing. I have a note 9 as well to compare. I'm actually deeply disappointed. I also noticed screen mode only has 2 options... vivid and natural. Where as note 9 has 4 screen modes. I'm trying to figure things out to see if I can get it to be true black.
It's probably normal since it's a night mode and not a black mode ; in which you wouldn't it to make your screen showing heavy contrasted differences that actually made more eye fatigue than the light one.
Maybe I'll finally like this mode on this new phone.
Nastrahl said:
It's probably normal since it's a night mode and not a black mode ; in which you wouldn't it to make your screen showing heavy contrasted differences that actually made more eye fatigue than the light one.
Maybe I'll finally like this mode on this new phone.
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No I understand it's a "Night mode" but I'm comparing it to the Note 9 and Note 8 Night mode where it became a true black. And I ran it in Night mode almost 24/7 for some battery savings as well. Well that doesn't work if Night Mode is just a dark grey rather than a true black.
And I'm not sure how true black and contrast made for more eye fatigue? Have you never watched a 4K movie? The whole point of high def is high contrast with true deep blacks, bright whites, and bright colors.
I also noticed on the quick access home screen in Samsung Browser on dark mode, it's not longer a true black. Now if you turn on High Contrast mode in the browser settings, then the background is a true black, so that panel is capable of turning off the pixels and going true black. This means it was an obvious design choice.
Mr. Orange 645 said:
No I understand it's a "Night mode" but I'm comparing it to the Note 9 and Note 8 Night mode where it became a true black. And I ran it in Night mode almost 24/7 for some battery savings as well. Well that doesn't work if Night Mode is just a dark grey rather than a true black.
And I'm not sure how true black and contrast made for more eye fatigue? Have you never watched a 4K movie? The whole point of high def is high contrast with true deep blacks, bright whites, and bright colors.
I also noticed on the quick access home screen in Samsung Browser on dark mode, it's not longer a true black. Now if you turn on High Contrast mode in the browser settings, then the background is a true black, so that panel is capable of turning off the pixels and going true black. This means it was an obvious design choice.
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Dark VS black doesn't make much difference battery wise on OLED screens (let me just find the test back and I'll update my post)
Because the notification panel and anywhere else that it matters contains mostly texts and it produce visual retina persistence (not sure if I translated well), plus it's more annoying to read and and eyes accommodate less than in light mode where everything is light too.
There's nothing to do with movies since it's dynamic and constantly changing from a lot of different colours while texts are more static (but going from dark to light scene still hurts)
I agree that it's absolutely a design choice, but in my opinion for the better.
Nastrahl said:
Dark VS black doesn't make much difference battery wise on OLED screens (let me just find the test back and I'll update my post)
Because the notification panel and anywhere else that it matters contains mostly texts and it produce visual retina persistence (not sure if I translated well), plus it's more annoying to read and and eyes accommodate less than in light mode where everything is light too.
There's nothing to do with movies since it's dynamic and constantly changing from a lot of different colours while texts are more static (but going from dark to light scene still hurts)
I agree that it's absolutely a design choice, but in my opinion for the better.
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I gotcha. Makes sense. I'd like to see some tests on black vs dark. I had always heard and though the battery savings was due to the pixels shutting off. It's why the AOD is black and not just dark.
Buts also weird. I'm replying to this direct from the Gmail notification of your reply. So it opened up the webpage in the webview. Well the top bar above the page that says reply to topic and has had the Gmail overflow button is true black. But the status bar right above it is dark grey.
I guess what bugs me most is it makes the camera cutout stick out, even in the dark. Because I look up an I see a true black for on a dark charcoal background. And I can see the screen edges. I preferred on the Note 9 where it all just blended away with the true black.
But yet, when I watch a movie, the status bar DOES turn off completely and you can't see the camera cutout. Just can't figure out the inconsistency.
Mr. Orange 645 said:
I gotcha. Makes sense. I'd like to see some tests on black vs dark. I had always heard and though the battery savings was due to the pixels shutting off. It's why the AOD is black and not just dark.
Buts also weird. I'm replying to this direct from the Gmail notification of your reply. So it opened up the webpage in the webview. Well the top bar above the page that says reply to topic and has had the Gmail overflow button is true black. But the status bar right above it is dark grey.
I guess what bugs me most is it makes the camera cutout stick out, even in the dark. Because I look up an I see a true black for on a dark charcoal background. And I can see the screen edges. I preferred on the Note 9 where it all just blended away with the true black.
But yet, when I watch a movie, the status bar DOES turn off completely and you can't see the camera cutout. Just can't figure out the inconsistency.
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It may be because apps got their own night mode colour settings embedded, while all One UI apps got theirs which are different.
Like, if for Google night mode is all black, their apps will just check about system UI night mode trigger and of its on, apply their own settings.
I can only find that reason for it to be such inconsistent.
Nastrahl said:
It may be because apps got their own night mode colour settings embedded, while all One UI apps got theirs which are different.
Like, if for Google night mode is all black, their apps will just check about system UI night mode trigger and of its on, apply their own settings.
I can only find that reason for it to be such inconsistent.
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That's a good point/thought. I hadn't thought of that. Damn...I just like consistency, LOL.
Mr. Orange 645 said:
That's a good point/thought. I hadn't thought of that. Damn...I just like consistency, LOL.
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I totally understand and agree ! Especially when you like what Samsung did with their UI
In an other hand, there's some third party theme that may be of use to have a black theme : https://forum.xda-developers.com/s10-plus/themes/theme-anxious-t3921645
I don't know if it's working for the Note 10 yet but I think it's just a matter of time before it do
Nastrahl said:
I totally understand and agree ! Especially when you like what Samsung did with their UI
In an other hand, there's some third party theme that may be of use to have a black theme : https://forum.xda-developers.com/s10-plus/themes/theme-anxious-t3921645
I don't know if it's working for the Note 10 yet but I think it's just a matter of time before it do
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I'm using #hex_ and it works very well on Note10+.
Wysłane z mojego SM-N975F przy użyciu Tapatalka
I just use a theme that's mostly black everywhere. No need for night mode..
One UI notification shade isn't actually black for any of the devices on the One UI. I had an S8+ before this and it looked black but if you take a screenshot and measure the color value, you'll see that it's not black. You can do the same thing on your Note 9. Take a screenshot and extract the color value. Or take a screenshot and then transfer that screenshot to the Note 10 and view it on the Note 10. I guarantee that the Note 9 screenshot of the notification shade will look like the Note 10 notification shade. Black will cause AMOLED smearing which isn't good look.
jkgao said:
One UI notification shade isn't actually black for any of the devices on the One UI. I had an S8+ before this and it looked black but if you take a screenshot and measure the color value, you'll see that it's not black. You can do the same thing on your Note 9. Take a screenshot and extract the color value. Or take a screenshot and then transfer that screenshot to the Note 10 and view it on the Note 10. I guarantee that the Note 9 screenshot of the notification shade will look like the Note 10 notification shade. Black will cause AMOLED smearing which isn't good look.
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So I tried this. Set my Note 9 to Night Mode and took a screen shot. Sent it to my N10+. Guess what? The notification shade in my Note 9 screen shot is pure black when viewed on my N10+ screen.
So I did the opposite. Took a screen shot of N10+ notification shade and sent it to my Note 9, and it appears dark grey.
So I'm not saying you're WRONG, but this is proof that the notification shade on Night Mode on the Note 9 (and the Note 8) was SIGNIFICANTLY darker than the N10+. If they aren't true black, then they are so close at to be indistinguishable from it, whereas the N10+ is definitely lighter than black.
I also just used an app to do a color value sample on my screenshots. Note 9 notification shade is #00000. I believe that is true black?
See my attached screenshots. War Machine is Note 9 (The one with the true black notification shade) and the Darth Vader is the Note 10+ (the one with the dark grey notification shade)
To see what I'm talking about, you may need to turn brightness up on your phone or go in a dark room.
Screenshots of color picker showing Note 9 notification shade is #00000 (true black) and Note 10+ is #080808 (not true black).
koppee1 said:
I just use a theme that's mostly black everywhere. No need for night mode..
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I tried this. The notification shade was still dark grey, not black.
Samsung doesn't use black on the N10, it's that simple. They use a form of grey that's fairly close to pure black, however. The avg person probably uses white themes, so I doubt many will take notice.
Mr. Orange 645 said:
I tried this. The notification shade was still dark grey, not black.
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Look for a different theme. There are black ones. I'd post mine but I can't seem to post screenshots here.
koppee1 said:
Look for a different theme. There are black ones. I'd post mine but I can't seem to post screenshots here.
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It's all good. I fixed it with GoodLock. I have my stock theme and a true black notification shade again.
Thanks!!
Mr. Orange 645 said:
It's all good. I fixed it with GoodLock. I have my stock theme and a true black notification shade again.
Thanks!!
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Write back when you find a solution to make samsung browser black.cheers.
As Nastrahl pointed out it the pixels don't need to be completely off to save a lot of power. I was going for total black but since I adjust brightness manually a little bit of tint to the black looks nicer and makes it easier to gauge the brightness.
You can use the Good lock app Quickstar to make the pull down notification panel any color or darkness level you want. Mine is almost black with a hint of forest green.
My wallpaper is even darker with the same green tint.
When the brightness is too high the wallpaper's green tint is noticeable otherwise it looks black.

Blue tint on my Galaxy m51 while using dark mode.

I've enabled dark mode on my phone. And while scrolling through Instagram or any other app I can see that when the black region in the photo moves it leaves behind a blue/navy tint. The same is true when swiping the photos in gallery and other places as well. The issue doesn't occur when using the normal light mode. Are you guys also facing this issue?*
You won't get to see it directly. But then if you notice carefully you'll observe this. It occurs mainly when there's a change in colours while using dark mode. Like when there are images, checking for wallpapers on 3rd party apps, social media, etc. Do let me know about it.*
This is really bad news. I avoided the Galaxy A71 for this reason and with your comment I'm now seeing signs that that the Galaxy M51 has those same issues.
If anything I have to avoid grey import websites now because I want to be able to refund the phone if I encounter the same problem.
shashanks_33 said:
I've enabled dark mode on my phone. And while scrolling through Instagram or any other app I can see that when the black region in the photo moves it leaves behind a blue/navy tint. The same is true when swiping the photos in gallery and other places as well. The issue doesn't occur when using the normal light mode. Are you guys also facing this issue?*
You won't get to see it directly. But then if you notice carefully you'll observe this. It occurs mainly when there's a change in colours while using dark mode. Like when there are images, checking for wallpapers on 3rd party apps, social media, etc. Do let me know about it.*
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I have the same issue, I thought that comes along with amoled displays
shashanks_33 said:
I've enabled dark mode on my phone. And while scrolling through Instagram or any other app I can see that when the black region in the photo moves it leaves behind a blue/navy tint. The same is true when swiping the photos in gallery and other places as well. The issue doesn't occur when using the normal light mode. Are you guys also facing this issue?*
You won't get to see it directly. But then if you notice carefully you'll observe this. It occurs mainly when there's a change in colours while using dark mode. Like when there are images, checking for wallpapers on 3rd party apps, social media, etc. Do let me know about it.*
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Don't have this problem on my m31s while using dark mode may because m51 uses csot amoled display?
https://www.sammobile.com/news/galaxy-m51-ditch-samsungs-oled-panels/amp/
Update.
I went to the Samsung service center in Bangalore. They checked it out too and were like it's the first time someone reported this. And they couldn't do much about it. Also they showed me a few s9's and some other samsung devices with sAmoled displays and the same blue tint issue was there but a little less. So there's nothing to worry about. But I still kinda feel bad about it. Having to look at it all the time xD
shashanks_33 said:
So there's nothing to worry about.
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There is, the fact that this issue appears on other phones doesn't make it any better for people who end up with a inferior looking display.
Especially considering that this is the most visible when using dark theme and displaying black in general and 100% black is why a lot of people go for OLED displays.
This actually makes me think I'd be better off with an LCD if AMOLED screens have issues with burn-in, color tint and smearing.
My m51 (brazilian one) have this blue tint thing, and also the screen didn't got calibrated very well, so the white seems to be a little green. So I calibrated it

Question Display issues after MIUI 12.5.2 update

Link to reddit video
After the 12.5 (Indian) update, I'm starting to notice that the colours of the display has gone weird. It doesn't look like an amoled anymore. Is anybody else experiencing this?
hrstrange said:
Link to reddit video
After the 12.5 (Indian) update, I'm starting to notice that the colours of the display has gone weird. It doesn't look like an amoled anymore. Is anybody else experiencing this?
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Also the display is perfectly fine in lock screen. The colours go weird after I unlock the phone.
While trying the latest miui build I noticed that blacks don't really turn the pixels off like an amoled should. You can notice this for example in the camera app at the top and bottom bars that should be black but in reality are slightly red, only noticable in a dim room or if you crank the brightness. I think this is their way of "fixing" gradient issues on this phone and it indeed is less present but at what cost?
akicarkralj said:
While trying the latest miui build I noticed that blacks don't really turn the pixels off like an amoled should. You can notice this for example in the camera app at the top and bottom bars that should be black but in reality are slightly red, only noticable in a dim room or if you crank the brightness. I think this is their way of "fixing" gradient issues on this phone and it indeed is less present but at what cost?
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Ah so it is indeed because of their gradient issue. I hope they completely fix this one day.

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