Database Develop

[Q] display problem

Hi I have a small problem with my galaxy and I wonder if it is a common thing or is it a sporadic case. I recently took my galaxy in assistance for the replacement of the screen (between lcd and capacitive glass had a hair) Once again after a while 'I realized (I think that there is a problem from the beginning) that appeared on the display strange signs. Initially I thought it was a lcd problem then I tried to shift the LCD image and saw that signs remained fixed as if they were between display and glass. I brought the phone back in service but they said there were no defects. For sureness (they were very nice) they showed me another galaxy just out of the box and presented the same peculiarities. It seems to me (but I'm not sure) that the first galaxy that I had not had this feature.
If you want to help me try to manually set the display brightness to low and pull down the curtain of the notification bar, or choose a dark gray background and gimme an answer.
thank you

i attach a photo

anyone?
I saw that many people have downloaded the image.
thank you

Can you explain what is so peculiar about it ? I dont see anything wrong with that image . Is it the three orange color curved lines ?? (though that looks to me like a reflection of something).

Are you talking about the red haloing effect around the white text?
Apart from the orange claw 'reflection' in the top right there is nothing discernible about that image.

orange signs are camera lens reflection. I talk about grey zones of images. If you watch closely you notice that some grey pixel zones are different from other. With a kind of green blur.
thank you for your answers

Is this what you are concerning about?
http://forum.xda-developers.com/showpost.php?p=8766267&postcount=12

Screen brightness uneven -- anyone else?

Folks,
Got a question for you -- as per the title. To give you a little background, I bought an S2 8.0, loved it, and then decided that I really ought to replace my existing "data plan" tablet from the S 8.4 to the S2 9.7. So, good-bye to the S2 8.0, and I've got a new S2 9.7 LTE.
All is well, EXCEPT for some screen oddness. I'll have to post some pictures, but I think I can describe it well enough. To begin with, I don't really like "busy" wallpaper -- I just use a solid-color, medium-to-dark blue wallpaper as my background. What I really notice, both in portrait and landscape orientation, is a darker band at the top of the screen -- again, it happens in both portrait and landscape orientation. It seems to be a "viewing angle" thing, as the dark "top" in landscape orientation doesn't turn into a dark "side" in portrait orientation. Instead, when I move to portrait orientation, then the top of the screen has this dark band, and the sides are just fine.
But I don't notice quite the same thing happening when I get into some apps -- for instance, the yellow/orange top band in the "Memo" application doesn't turn noticeably darker. But the green top band in the "Evernote" application shows it IN SPADES, though it's a really thin band at the very edge of the screen. And, again, it's always at the top, no matter which orientation I'm in, that I see the dark band.
Anyway, that's the most obvious stuff. However, when you back up and take the whole screen in view, what I'm really seeing is A LOT OF COLOR CHANGE as I angle the tablet towards me (more vertical) and away from me (more horizontal). Again, just go into the Memo application, and lay your tablet flat on a table, then grab it and tilt it up towards you -- do you get a big change in color, or does it stay the same? I guess I would say that the "white" color "turns bluish" as I raise the tablet towards me (making it more vertical), and it goes more to a normal white when I lay it flat.
I can understand changes in screen quality due to viewing angles, but that's not something that I associate with OLED screens. I sure didn't see anything like this at all with the S2 8.0 that I had. And I've started looking at S2 9.7 tablets in stores, and I really haven't seen anything like it in the stores. Thus, I'm definitely thinking about returning the thing -- unless it's really a case of "they all do it."
So, if you guys could check out your tablets and let me know if you see anything like this, I would appreciate it. It's not worth taking the thing back and asking for an exchange if what I'm seeing is common, but I'm definitely a bit disappointed in the screen quality that I've got with this tablet.
Thanks in advance for checking this out for me, and for any thoughts you'd like to send my way!
thoots

thoots said:
Anyway, that's the most obvious stuff. However, when you back up and take the whole screen in view, what I'm really seeing is A LOT OF COLOR CHANGE as I angle the tablet towards me (more vertical) and away from me (more horizontal). Again, just go into the Memo application, and lay your tablet flat on a table, then grab it and tilt it up towards you -- do you get a big change in color, or does it stay the same? I guess I would say that the "white" color "turns bluish" as I raise the tablet towards me (making it more vertical), and it goes more to a normal white when I lay it flat.
thoots
Click to expand...
Click to collapse
I have yet to see an S2 that can display a uniform white screen. I can always see a light pink/purple tint on a white background. If all you're doing is consuming media you will never notice, but if you're reading anything with a white background it gets too distracting. I don't see any issues with uniform brightness though, it looks perfect from that standpoint.

paranoyd1 said:
I have yet to see an S2 that can display a uniform white screen. I can always see a light pink/purple tint on a white background. If all you're doing is consuming media you will never notice, but if you're reading anything with a white background it gets too distracting. I don't see any issues with uniform brightness though, it looks perfect from that standpoint.
Click to expand...
Click to collapse
Understood -- thanks. I installed a couple of screen testing apps, and they show no issues. For instance, I pulled up a full-screen blue that was very similar to the blue I'm using for my background, and it was nicely solid blue. Then I pulled up a full-screen green that was similar to the top of Evernote, and it was nicely solid blue. Then I pulled up a full-screen white, and you could see what you and I have both mentioned -- it does change colors a bit as you move the screen around.
So, it's just very strange what my S2 is doing -- it's like it must have something to do with other on-screen elements. I'll definitely take it back and exchange it for another one, but I'm just trying to get a grip on whether this is happening on any other S2 tablets. And it definitely appears that it isn't.
Thanks for your reply!
thoots

I've been checking my T815 a little while ago after noticing similar behaviour. The way I see it, the tab S2 screen is very sensitive to the viewing angle. Not so much in blue and red, but very much so in green. In fact, to get a proper green, I have to look dead on. I even notice a change in the green colour: dead on it's yellowish green, while even at a slight angle it is an uglier green. The first is clearly what the device is calibrated for, because that's when things like skin tones look perfect.
I used the *#0*# menu to test.
I compared this to my other devices. On the note4 I didn't notice this. But that may be because of the smaller screen. On my previous tab, tab77, the effect was also completely absent. But that one has a completely different oled layout.
I've already eliminated display modes and auto brightness as influences. I still have to look into the effects of ambient light, since the displays of my devices do reflect differently when turned off. In fact, under some angles the tab S2 reflects a bright white lamp as pure green. While the tab77 always reflects the same lamp as white.
I know that the tab S2 has an rgb matrix that has two Gs for every R and B. That's probably related to the effect I'm seeing.

Non-uniform intensity across screen at low-brightness settings?

Hi,
Has anyone notciced un-even brightness across the screen at low light levels (for darker colors)? I thought it was just the nature of these OLED screens, but I don't see this with Galaxy Phone with similar display type, so I'm wondering if I just have a defective unit with bad display.
To test it:
- Do this at night (when ambient light is fairly low).
- Lower brightness down to the lowest setting (turn off auto-brightness)
- Open Chrome browser, and close all tabs, so that you get a blank dark screen with just the "+" icon. This leaves a dark gray background, just enough to notice if there is any uneveness in brightness.
On my unit, I see about 3-4 inches of bands/streaks of darker areas at bottom half of the screen. If I rotate the tablet, the darker areas stay in their physical location (so these bands become vertical instead of horizontal), so I know it's not a software issue.
I have a couple of weeks left before I need to decide on whether to exchange the tab, so would appreciate if anyone can help me verify if this is normal thing with these screens.
Many thanks, Tony.

tonyc1 said:
Hi,
Has anyone notciced un-even brightness across the screen at low light levels (for darker colors)? I thought it was just the nature of these OLED screens, but I don't see this with Galaxy Phone with similar display type, so I'm wondering if I just have a defective unit with bad display.
To test it:
- Do this at night (when ambient light is fairly low).
- Lower brightness down to the lowest setting (turn off auto-brightness)
- Open Chrome browser, and close all tabs, so that you get a blank dark screen with just the "+" icon. This leaves a dark gray background, just enough to notice if there is any uneveness in brightness.
On my unit, I see about 3-4 inches of bands/streaks of darker areas at bottom half of the screen. If I rotate the tablet, the darker areas stay in their physical location (so these bands become vertical instead of horizontal), so I know it's not a software issue.
I have a couple of weeks left before I need to decide on whether to exchange the tab, so would appreciate if anyone can help me verify if this is normal thing with these screens.
Many thanks, Tony.
Click to expand...
Click to collapse
I have notice a similar thing, mostly on gray - dark gray backgrounds, and not necessarily at lowest brightness (low enough though). I wanted to check about it on a couple of devices on display at retail stores but it's hard to test there.
Sent from my SM-T815 using Tapatalk

Hi tonyc1,
Having had 4 of these I can confirm that this unevenness is normal on the 9.7" screen but was not present on the 8" model.
I went through 4 to get one that was reasonably even, 2 of them were pretty awful to the point that the greyscale was all over the place.
The unit I settled on has a slightly darker band in the middle of the screen and a slight darkening at the very top.
I owned the original tab s 10.5 and have to say the screen on that was more even and detailed, I prefer the former factor and speed of this S2 but the screen is a step backwards.
Hope this info helps.
Cheers

Thanks for the notes and confirming this is a somewhat common issue. I guess I will live with it for now..

Question Avoid keyboard burn-in

Hello all, my past 3 AMOLED phones have been facing burn-in where the keyboard is displayed as I tend to chat a lot! Can anyone give me an option to avoid it? Please don't troll and say use less keyboard!

Might help if you keep the brightness on the lower side, other than that seems like catch22

Also choose a darker theme for the keyboard.

Maddmatt said:
Also choose a darker theme for the keyboard.
Click to expand...
Click to collapse
That's why it kept happening for me... The I turn it to light mode and then the burn in goes away!

Dark mode will help reduce it, but I leave my phone set to auto switch light and dark mode based on sunrise and sunset, this way whatever app I'm using also switches, so the light and dark apps, flip button colours as well so anything white on a black screen also becomes black on a white screen so it helps reverse any burnin in that sense too.
For example, texting apps usually also have white icons at the top which can burn in with dark mode, so if you switch to light mode, the same icons are now black on a white screen, so the screen burns but the icons don't, so it all slowly burns in together and nothing becomes noticeable.
Been doing this after getting burnin on my S10+ using only darkmode and light icons left burnin. And then on my S20 Ultra I did the flipping light and dark mode and never had issues but I also had the full screen settings to hide the pinhole camera so it made the entire top black, and then One UI 3.0 came out and they removed that option so now you can't hide the pinhole camera and I had a burnin bar across the top from where it was black lol.
Now on my S21 Ultra I have the light and dark mode set to flip at sun rise and sun set, and I can't hide the pin hole so maybe third phone is the charm here and I won't have any burnin at all this time haha.
Hope this helps.

There is no burn in with AMOLEDs; they have a finite lifespan and get dimmer as they age before finally failing after many 10's of thousands hours.
Don't over drive them by using them at maximum or near maximum levels.
High energy blue pixels are the most susceptible to damage, red the least because of its longer wavelength.
Use manual brightness control. Avoid going much over 50%.
Using full brightness reduces pixel lifespan as probably does high temperatures ie direct sunlight.
Limit usage at full brightness by the second*.
Using manual control ensures you're aware of it and keeps the phone from auto jacking it up on you when not really needed.
Turn it down in low light; don't burn out your retina's as they aren't replaceable.
Use dark mode whenever possible. Use dark or black wallpaper. You Good Lock to get rid of the stutus bar icons; simply use the pull down notification screen.
My 10+ gets heavy usage every day with a lot of keyboard time. At 15+ months there is no discernible weakness or dead pixels of any color at any brightness level.
*this is especially important with static images

bANONYMOUS said:
Dark mode will help reduce it, but I leave my phone set to auto switch light and dark mode based on sunrise and sunset, this way whatever app I'm using also switches, so the light and dark apps, flip button colours as well so anything white on a black screen also becomes black on a white screen so it helps reverse any burnin in that sense too.
For example, texting apps usually also have white icons at the top which can burn in with dark mode, so if you switch to light mode, the same icons are now black on a white screen, so the screen burns but the icons don't, so it all slowly burns in together and nothing becomes noticeable.
Been doing this after getting burnin on my S10+ using only darkmode and light icons left burnin. And then on my S20 Ultra I did the flipping light and dark mode and never had issues but I also had the full screen settings to hide the pinhole camera so it made the entire top black, and then One UI 3.0 came out and they removed that option so now you can't hide the pinhole camera and I had a burnin bar across the top from where it was black lol.
Now on my S21 Ultra I have the light and dark mode set to flip at sun rise and sun set, and I can't hide the pin hole so maybe third phone is the charm here and I won't have any burnin at all this time haha.
Hope this helps.
Click to expand...
Click to collapse
you say you had burn in from keeping a black bar in the area where the pinhole was?
that doesnt make any sense. If it was black those pixels were off and there wouldnt be any burn in
ಠ_ಠ

Get Gboard, And change it to a dark skin, I've never had any problems

sesnut said:
If it was black those pixels were off and there wouldnt be any burn in
Click to expand...
Click to collapse
Reverse burn in, the screen area being used has a yellowish tone to it from being worn in over time, no matter how long the display is on, it's always burning in and the colour always adjusts over time from the burn in, it's the image retention burn in that people talk about, but the entire screen is always burning the entire time it's used. So by never using the top area the pixels are fresh and have a cooler tone to them than the rest of the screen as a result of this.

VICosPhi said:
Might help if you keep the brightness on the lower side, other than that seems like catch22
Click to expand...
Click to collapse
Indeed. And to add, perhaps occasionally change from white to black keyboard to even things out.

This is a good one. Says something about fast charging and not showing this message again. Guess they forgot to check don’t show again.

No offence but:
Pay 1.2K for phone after you see super HDR, huge brightness etc. and then limit everything to minimum? Seriously?
If I see them, I will ask EE(my phone provider) to replace it. I had same issue with OP 7 Pro, screen burn ins, they have replaced phone.

joloxx9joloxx9 said:
No offence but:
Pay 1.2K for phone after you see super HDR, huge brightness etc. and then limit everything to minimum? Seriously?
If I see them, I will ask EE(my phone provider) to replace it. I had same issue with OP 7 Pro, screen burn ins, they have replaced phone.
Click to expand...
Click to collapse
Some countries like the UK have better consumer laws than others.

Sukrith said:
Hello all, my past 3 AMOLED phones have been facing burn-in where the keyboard is displayed as I tend to chat a lot! Can anyone give me an option to avoid it? Please don't troll and say use less keyboard!
Click to expand...
Click to collapse
From normal use there will be no burnin. However, if you keep your display on showing the keboard all the time it will burn in. Also pixels start to burn in once they are on

kpwnApps said:
From normal use there will be no burnin. However, if you keep your display on showing the keboard all the time it will burn in. Also pixels start to burn in once they are on
Click to expand...
Click to collapse
Mate - I had burn ins on my screen from things like clock etc, you cannot get rid of them, and it is a design flown, as long there is nothing in instruction etc.

joloxx9joloxx9 said:
Mate - I had burn ins on my screen from things like clock etc, you cannot get rid of them, and it is a design flown, as long there is nothing in instruction etc.
Click to expand...
Click to collapse
Samsung shifts the AOD clock to help prevent this. However I use only tap on AOD now.
Perps know the deal, organic LEDs have a finite lifespan. Yeah you can drive your car as fast as it will go but you probably don't because you know it wouldn't last very long.
You wonder why the price tag keeps going up?
Freebies are never free.
Using in direct sunlight or at 80+% is just asking for it. In most cases completely avoidable. One can at least limit the time of use at full brightness and not have a homescreen that looks like a Vegas billboard.

blackhawk said:
Samsung shifts the AOD clock to help prevent this. However I use only tap on AOD now.
Perps know the deal, organic LEDs have a finite lifespan. Yeah you can drive your car as fast as it will go but you probably don't because you know it wouldn't last very long.
You wonder why the price tag keeps going up?
Freebies are never free.
Using in direct sunlight or at 80+% is just asking for it. In most cases completely avoidable. One can at least limit the time of use at full brightness and not have a homescreen that looks like a Vegas billboard.
Click to expand...
Click to collapse
So they should not sell them in countries like Spain etc as there is too much sun

joloxx9joloxx9 said:
So they should not sell them in countries like Spain etc as there is too much sun
Click to expand...
Click to collapse
I live in Texas desert, the sun here is intense.
It burns out LED traffic lights all the time; OLEDs are far less tolerant.
Simply use in the shade.
The individual pixels are microscopic. That they work at all is amazing let alone being capable of high lumen output with extremely excellent color/gamma rendering.
The AMOLED matrix has 10's of thousands of active solid state components not just the OLED pixels themselves. All are hest sensitive plus the fact the display is helping to dissipate mobo heat while producing heat of it's own. The most heat sensitive component, the OLED is smack on top of this glass heatsink*.
Direct sunlight in especially high ambient temperatures is a real bad plan. You can fry any display like this.
Know, understand and respect their limitations. You will be rewarded with a long lived gorgeous display.
*glass is a good thermal insulator. Do tempered glass protective screens increase the thermal burden? Most likely. If cool at first the added mass will be protective but once the device (or the sun) heats that mass up things will go down hill from there and the display temperature will rapidly climb.

joloxx9joloxx9 said:
So they should not sell them in countries like Spain etc as there is too much sun
Click to expand...
Click to collapse
Common sense should prevail I guess. I live in a place hotter than Spain. If I were to use my device in the middle of the day in bright sun light it’ll cook after 15mins. Hence why I don’t. But then would any other device.

blackhawk said:
I live in Texas desert, the sun here is intense.
It burns out LED traffic lights all the time; OLEDs are far less tolerant.
Simply use in the shade.
The individual pixels are microscopic. That they work at all is amazing let alone being capable of high lumen output with extremely excellent color/gamma rendering.
The AMOLED matrix has 10's of thousands of active solid state components not just the OLED pixels themselves. All are hest sensitive plus the fact the display is helping to dissipate mobo heat while producing heat of it's own. The most heat sensitive component, the OLED is smack on top of this glass heatsink*.
Direct sunlight in especially high ambient temperatures is a real bad plan. You can fry any display like this.
Know, understand and respect their limitations. You will be rewarded with a long lived gorgeous display.
*glass is a good thermal insulator. Do tempered glass protective screens increase the thermal burden? Most likely. If cool at first the added mass will be protective but once the device (or the sun) heats that mass up things will go down hill from there and the display temperature will rapidly climb.
Click to expand...
Click to collapse
And this was me think you lived in the Mojave desert.

Question Faint White Lines with Grainy/Noise on Display

Hi,
Got a new Moto Edge 20 Pro a couple of weeks back.
The display at low brightness has very noticable Faint White Lines and the display looks grainy, like newspaper texture almost like the Kindle Display.
At darkness, when the display refresh rate is set to auto, I can see the grainy noise and the white lines change when I touch the display.
Grey and White colors arent Pure Grey and White. When I use pwmfree 1.3 or OLED SAVER app, the white lines are almost gone (not entirely gone) and the grainy texture / noise increases.
Any idea whats going on, whether it is a software or a hardware issue ?
is there a way to get this fixed ?

karikaalan0207 said:
Hi,
Got a new Moto Edge 20 Pro a couple of weeks back.
The display at low brightness has very noticable Faint White Lines and the display looks grainy, like newspaper texture almost like the Kindle Display.
At darkness, when the display refresh rate is set to auto, I can see the grainy noise and the white lines change when I touch the display.
Grey and White colors arent Pure Grey and White. When I use pwmfree 1.3 or OLED SAVER app, the white lines are almost gone (not entirely gone) and the grainy texture / noise increases.
Any idea whats going on, whether it is a software or a hardware issue ?
is there a way to get this fixed ?
Click to expand...
Click to collapse
The noise on the display is the nature of OLED displays. Or at least the one on this phone. I have a regular Edge 20, but they have the same display anyway. Same issue you pointed out: grain with certain colors and at lower brightness. And yes, I do get some vertical lines at the bottom of the screen. It's not defect, it's just the way it is.

Username: Required said:
The noise on the display is the nature of OLED displays. Or at least the one on this phone. I have a regular Edge 20, but they have the same display anyway. Same issue you pointed out: grain with certain colors and at lower brightness. And yes, I do get some vertical lines at the bottom of the screen. It's not defect, it's just the way it is.
Click to expand...
Click to collapse
I had an iPhone12 before this and that too had an OLED Panel, and I wasnt able to see anything like this.
And the Noise is not consistent. It's pretty freaking uneven and Its a total mess. To see the Noise completely, just open a 2% grey image or something and observe it. It's pretty abysmal. No way OLED displays are this bad.
I just think that Moto has crapped on its customers with a defective batch of Displays.
Also the situation gets better when you use pwmfree app.
The panel's gray uniformity is pretty bad. Im suspecting if this is a case of banding/dirty screen effect on oled screens, which is a defect and not a norm for an OLED Displays.

karikaalan0207 said:
I had an iPhone12 before this and that too had an OLED Panel, and I wasnt able to see anything like this.
And the Noise is not consistent. It's pretty freaking uneven and Its a total mess. To see the Noise completely, just open a 2% grey image or something and observe it. It's pretty abysmal. No way OLED displays are this bad.
I just think that Moto has crapped on its customers with a defective batch of Displays.
Also the situation gets better when you use pwmfree app.
The panel's gray uniformity is pretty bad. Im suspecting if this is a case of banding/dirty screen effect on oled screens, which is a defect and not a norm for an OLED Displays.
Click to expand...
Click to collapse
Ah, well, I haven't owned any expensive phones so I can't really compare to anything other than the Moto Z2 Play, which also had a grainy OLED panel. If I were you I'd be annoyed as well, but I payed a fraction of MSRP for my phone so I can't complain.

karikaalan0207 said:
I had an iPhone12 before this and that too had an OLED Panel, and I wasnt able to see anything like this.
And the Noise is not consistent. It's pretty freaking uneven and Its a total mess. To see the Noise completely, just open a 2% grey image or something and observe it. It's pretty abysmal. No way OLED displays are this bad.
I just think that Moto has crapped on its customers with a defective batch of Displays.
Also the situation gets better when you use pwmfree app.
The panel's gray uniformity is pretty bad. Im suspecting if this is a case of banding/dirty screen effect on oled screens, which is a defect and not a norm for an OLED Displays.
Click to expand...
Click to collapse
I have noticed a weird behavior with the display. forcing it to 60Hz by enabling power saving mode significantly reduces the grain and make the panel a lot more uniform.