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[Q] Galaxy Mini 2 camera - dead, or half dead pixel?

Hi XDA, I have a few questions about the camera sensor problem on my Galaxy Mini 2.
Yeah, I know it's a low-end phone with a weak camera (and it would seem that I'm making a big deal out of this), but I'm not asking this because I'm annoyed by it - I just wish to know if it's a completely dead pixel, and if such thing as "half dead" pixel exists. Such things can happen on high-end devices too.
So, what's this all about? There's a very small dark dot on my photos, especially photos of the sky and other uniformly lit objects. It's most visible on lower ISO values - although you can't manually set ISO on this phone, the value shows up in IrfanView's info box.
The problem is, I don't know if it's a completely dead pixel. You see, the dark dot and its surrounding area never read HTML color #000000 (full black) in any photo viewer on my PC. So could it be a "half dead" pixel, if such thing exists (a pixel that's not dead but simply can't sense light correctly)? No, it's not a dirty lens or dust, I checked.
If I take some indoor photos (higher ISO values, more light to camera sensor) the dark dot becomes brighter, more like light-gray. And on completely exposured (extremely bright) photos, the dark dot is almost gone. Another thing, indoor photos on Mini 2 are usually blurrier (lack of autofocus), and the dark dot on them is also blurred - it's not sharp independent of its surroundings, which would indicate a damaged camera sensor.
Finally, do such dead (or half dead) pixels have a tendency of growing in size (expanding) over time? If not, I can live with it.

Screen Filter (Twilight) and AMOLED Issues

Hello friends,
Recently I came across this article regarding burn-in issues in AMOLED and according to the article it seems that screen filter apps can cause irreversible damage (burn-in) on AMOLED. I'm quoting few lines form the articles below,
Some screen filters can turn the screen to another color — for example the app Twilight can make all images red-hued. However, this was reported to intensify screen burn-in. While red-shifted colors will decay less rapidly than blue or green, overusing any particular hue will eventually create a noticeable impact on the color accuracy of your screen.
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Personally I use red filter at 15-35% varyingly.
My question, How fast could the burn-in occur since I use Twilight every night?

How is the DC dimming? Does it make the screen look noticely worse?

I have read articles that said using DC brightness on OLED/AMOLED screens can effect colors, particularly at low brightness. How are people finding it? I dont really care if it makes colours "less accurate" as long as they dont look weird

Looks fine to me. Barely can tell the difference.

Working well as described, couldn't tell the difference.

Can someone try to port it to OnePlus 3 / 3t?..

anz563 said:
Can someone try to port it to OnePlus 3 / 3t?..
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What makes you think the 3 / 3T screen is capable of DC dimming? Can every AMOLED screen support it?

First off, I don't notice any flickering when the screen brightness is low so maybe DC dimming isn't for me. I'm sure someone with a fancy color monitor device will probably post a technical breakdown of how it affects the screen, but I don't see any difference except in one scenario.
In bed I tend to set the brightness settings on the lowest and then turn on nightmode to dim the screen even further. If you have small white text with a black background such as the settings menu or Youtube in dark mode, some of the text fades into the blackness and is unreadable. Images with dark colors or areas will look weird because you won't be able to distinguish them apart.
I tried to take pictures to show a comparison, but the screen is so dim that it doesn't work.

I have a display issue. Please someone confirm me that is normal or not?

Hey there, I recently bought the OP8. Sadly, my display have an issue.
Get a dark grey image. I used a dark grey image from google image search.
Set brightness at 20-30%, auto brightness off, DC dimming off, screen calibration to natural.
Display the dark grey image, make sure it cover fullscreen.
The issue is, which can be seen more easily inside a dark room:
The under-screen fingerprint sensor is visible as 2 overlapping rectangles
Photo attached ..
Please someone confirm me that is normal or not. Can i continue using the phone? Everything else is great. Just this issue. Should i keep the phone? I Got it from online unofficial , so It's gonna be difficult to claim warranty. Thank you

This is normal. All fingerprint readers for all phones that sits under the display are visible if you just find the extreme colour setting, light setting, angle, sun light or whatever far-fetched, never used setting needed.

sukanto69 said:
Hey there, I recently bought the OP8. Sadly, my display have an issue.
Get a dark grey image. I used a dark grey image from google image search.
Set brightness at 20-30%, auto brightness off, DC dimming off, screen calibration to natural.
Display the dark grey image, make sure it cover fullscreen.
The issue is, which can be seen more easily inside a dark room:
The under-screen fingerprint sensor is visible as 2 overlapping rectangles
Photo attached ..
Please someone confirm me that is normal or not. Can i continue using the phone? Everything else is great. Just this issue. Should i keep the phone? I Got it from online unofficial , so It's gonna be difficult to claim warranty. Thank you
Click to expand...
Click to collapse
This is normal, the rectangular portion will be translicent so that the reader behind the screen can register your finger print. for the reader to see your screen it needs that window.
Congratulations you have a FingerPrint reader.

Question S22 ULTRA- GREEN SCREEN WITH BLACK BACKGROUND

MY S22 ULTRA, 5 months old, began 48 hours ago to show the background of the lock screen (active display with a black background, in a very oscillating dark green color.
It only happens when the active display is activated, and sometimes inside with a dark background when it tries to adapt the brightness to the environment, it occurs as a kind of almost imperceptible flickering.
Internally the navigation, videos, photos and others are all perfect.
Things I have already tried:
Wipe Cache
Toggle between all screen resolutions and display options etc etc
With the mobile turned off while charging, if I press the power button to see the percentage of charge, that green is also seen.
I was reading that it may be a screen failure, but I still refuse to leave the phone in repair (150GB of internal information already copied), I don't know whether to wait for an update or what else to try.
Any suggestion?
Sorry for my english

I don't have answers for your issue, but I had exactly the same issue. I damaged my screen and it started appearing right after the damage to the screen. I don't use AOD, but mine did the same thing when it was put on charge.... no black screen, just the weird green. I turned off adaptive display and it disappeared. Had 2 updates since then and put back adaptive display and now the green is still gone. Not sure if was an update or the adaptive display change that fixed the issue

paulbcn said:
MY S22 ULTRA, 5 months old, began 48 hours ago to show the background of the lock screen (active display with a black background, in a very oscillating dark green color.
It only happens when the active display is activated, and sometimes inside with a dark background when it tries to adapt the brightness to the environment, it occurs as a kind of almost imperceptible flickering.
Internally the navigation, videos, photos and others are all perfect.
Things I have already tried:
Wipe Cache
Toggle between all screen resolutions and display options etc etc
With the mobile turned off while charging, if I press the power button to see the percentage of charge, that green is also seen.
I was reading that it may be a screen failure, but I still refuse to leave the phone in repair (150GB of internal information already copied), I don't know whether to wait for an update or what else to try.
Any suggestion?
Sorry for my english
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Click to collapse
Are you have newest soft?

_GRIZZLY_ said:
Are you have newest soft?
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Click to collapse
No, only official android updates, last 1º august

I had that problem in my note 8, had to send it to warranty to replace the display circuit and the display because of burn in pixels.

burnin said:
I had that problem in my note 8, had to send it to warranty to replace the display circuit and the display because of burn in pixels.
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Click to collapse
Can it get worse or will it always stay like this?
I just replaced the screen protector and it's still the same sometimes, not always, it seems to improve things but it only appears if I force the situation with dark environments.
How do you explain if it was a screen problem, within the android there is no display problem in photos, videos etc etc
It only affects the active display and while the adaptive display is active, that's why I don't want to send it to warranty so soon, I even hope that with Android 13 it will be solved!
To those who had to change the screen, did it come under warranty and the fault has been recognized without having to pay anything?
Obviously, if it were the screen, it would have to be some sensor or sector of the screen that only acts under certain conditions and I don't know at the hardware level what it could be, if any sensor or sector of the screen is internally damaged, it is very strange.
Thanks for answering.

paulbcn said:
Can it get worse or will it always stay like this?
I just replaced the screen protector and it's still the same sometimes, not always, it seems to improve things but it only appears if I force the situation with dark environments.
How do you explain if it was a screen problem, within the android there is no display problem in photos, videos etc etc
It only affects the active display and while the adaptive display is active, that's why I don't want to send it to warranty so soon, I even hope that with Android 13 it will be solved!
To those who had to change the screen, did it come under warranty and the fault has been recognized without having to pay anything?
Obviously, if it were the screen, it would have to be some sensor or sector of the screen that only acts under certain conditions and I don't know at the hardware level what it could be, if any sensor or sector of the screen is internally damaged, it is very strange.
Thanks for answering.
Click to expand...
Click to collapse
It was everything free, they replace the display circuit controler, the display and battery (mandatory on note 8 if you replace the display they replace also the battery).
The problem was stable, no true black, allways greenish, sometimes flick and turned true black for couple of seconds and returned to that greenish black. Was horrible, my luck was i had 24 months of warrany and this happend on my 22th month!

Hi, I have same problem for 2 weeks now. Seems to occur when in low light placed and adaptive brightness is on. Did you find solution?