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As it seems there are a few threads on auto brightness and color issues, i figure i should do the best i can to explain how it works on the S4, and mobiles in general. I work in Television/Film and have been shooting for almost a decade.
ANY QUESTIONS, feel free to PM me, i'll probably ask for very specific photo's (ISO/WB and other data) so i can help you in a professional manner, and i'll try to reply within 6-8 hours. No one should live with a bum screen!
To fully understand what im trying to express, load the attached image onto your phone, and on a bright sunny afternoon, print out the attached image on a small piece of decent photo paper, grab your phone, and find a room in your house that has only fluorescent lights and close any windows or shutters.
Look at the photo in the sunlight; note the colors. Now go inside to the fluorescent dark room, note the change in what the colors look like, and that white is still pretty white (thats your brain), then turn your camera flashlight on (LED), and note the changes in color again (some reds may look purplish or greens bluish), but white still looks kinda white (should look very light blue). Now repeat and look at the print out versus the same image on your phone screen; it should match best under 6500k lighting, but still be off (thats a printed image vs monitor thing though). Also depends on your printer ink type (dye/pigment), color space, etc etc etc. Your eyes take raw data in, but your brain does the magic, and says 'nope, thats white', so you perceive it as 'white' or 'white enough' and you 'know' it is meant to 'represent' white.
Hardware - This includes an ambient light sensor. The way these work is similar to metering systems in cameras; they measure the amount of light hitting a photodiode. Even in high end (DSLR) cameras, sometimes the light meters are junk. On cell phones, they are typically pretty crappy. The iPhone 5's have excellent ALS (ambient light sensors) and they ramp up/down smoothly; much better than any other device i've used.
The way the ALS works in most devices is simple; there are several photodiodes, each tuned for a specific spectrum of light. Say two for 3200k, two for 6500k, two for whatever else, etc, and they basically average the reading, apply a curve, and adjust the screen appropriately. They do NOT accurately measure color temperature very well, and 'see' brightness only in limited spectrums, meaning their idea of what 'bright' and 'dim' is may be vastly different from the human eyes' perceived 'bright' or 'dim'. Also, the 'curves' applied don't match up that well with how the human eye perceives brightness; its really amazing we can fake it as close as we can, really, but most of the magic lies in your brain.
Lighting - this is kind of tricky; and i don't feel like getting into it too deeply, but what you perceive as 'white' is mostly dependent on your brain; not your eyes or the lights around you. Think about reading a book (a real book) inside a library under fluorescent lights; the pages are white, even though the color temperature might be 5000k or 6500k. Now that same book outside; thats 5800k. Now under some old incandescent lights; that might be 2800k. Yet you know it SHOULD be white. Thats your brain. And thats reflected light; its based on the ambient color temperature around you; so reflected light 'looks' white or blue or whatever.
Your phone screen (galaxy S IV) is basically white balanced at 6600k , so it will appear most white when around lighting around 6500k, which is on the bluer side of daylight/cloudy and indoors.
Screen Mode - The Galaxy S IV has a feature that allows it to dynamically change based on the ALS, or can be overridden by the user, which mostly affects color gamut, and either amps up contrast and saturation while shifting hues slightly, or flattens them to a more realistic (usually most people prefer high saturation/high contrast images) image.
Sampling frequency - i have no idea what the ALS sensor samples at, or any definitive specs on the exact sensor and how it interacts with auto brightness, its priority, etc (yet, ive emailed Samsung and i wouldn't mind coming up with a simple app to adjust this if i can figure out the sensor specs and their software). But certain lights (fluorescent mostly) flicker at either 50hz or 60hz depending on their AC current, which may, at times, interfere or give bad readings to the ALS depending on the ALS sensor reading timings (again i do not know exactly what those values are, i suspect they are long as my S III and S IV typically react about a half-second behind lighting changes).
DETERMINING IF YOU HAVE A BAD DISPLAY
All together, it works pretty darn good, if a bit slowly, but there seems to be a lot of confusion and people wondering if their screen is bad. The BEST and EASIEST way is to go to any cell store or mall, and compare YOUR screen and the SAME image to another S IV, with the same settings. The best settings for this are to turn power saving OFF, turn off ALL power saving apps, turn auto brightness OFF, turn brightness up ALL THE WAY, go to 'settings', 'display', 'screen mode', and change the setting to 'movie'. Compare several IDENTICAL images or pages. Then change the 'screen mode' to 'standard' and compare the same images.
While doing so, be sure to check out images such as the one i provided and make sure the colors match, grays are grays or at least the same slight caste of pink/green/etc, and while doing so, TILT THE SCREENS at various angles together (level surface, side by side, tilt to 45 degrees at the same time on all 4 axes), and look for discoloration or bleeding; if you see big differences between two or three other phones and yours, you got a bum screen. I haven't seen a 'bad' one yet, and i made the poor AT&T guy open up five of them and let me play with them (AMOLED also has jet black splotches with full blacks in a fully black room; i wanted the screen with the least noticeable splotches).
Thanks for this. Question though. When I pull my keyboard up to type on something or if I'm in a YouTube video and I tap the screen to bring up the progress bar the color shifts dramatically. I've tried many settings and it always does this. Also tried it on another s4 multiple ones did the same thing...
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Just hoping for a fix for it
The white balance can actually be calibrated by changing the calibration levels of the LEDs sitting under the screen
Lets hope for the best
jetlitheone said:
Thanks for this. Question though. When I pull my keyboard up to type on something or if I'm in a YouTube video and I tap the screen to bring up the progress bar the color shifts dramatically. I've tried many settings and it always does this. Also tried it on another s4 multiple ones did the same thing...
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
ok, do me a favor, I would prefer if you had either a prosumer camera you could use, or better yet a DSLR you could borrow that i could guide you through how to take two shots of the differences with all the important variables locked down so i can figure it out for you. I believe the screenshot feature ignores the 'Screen Mode' settings, as it should (you wouldnt want a screen mode dictating recording colorimetry options), so it does require real photos to figure out.
Have you changed the standard 'Screen Mode' setting or left it at 'Adapt Display' or 'Dynamic'? Those will keep changing it; Professional photo and movie are more flat, but they do not change. Again disable power saving mode, power saving apps, turn off auto brightness, (in this case set brightness to where you want it) and check it out again; if it doesnt change colors, (which it should not), you have no issues; its a normal 'feature' of the device. The idea is to limit all variables. Try that and PM me the results. If the colors no longer shift, the issue was 'adapt display' or 'dynamic' Screen Modes. Auto brightness/powersaving mode/power saving apps should only affect brightness; we are only disabling them to limit perceived changes.
To try to trouble shoot this, change screen mode to a static setting like 'professional photo' or 'movie' in Screen Mode and turn off auto brightness, turn off power saving and turn off all power/battery saving apps/etc, bring up a Youtube video and play it, then bring up your keyboard and see if the color shifts (it shouldnt if you have changed Screen Mode to Pro Photo/Movie and disabled powersave/all battery apps/auto brightness). Then let me know if that fixes it via PM.
rapaholic999 said:
Just hoping for a fix for it
The white balance can actually be calibrated by changing the calibration levels of the LEDs sitting under the screen
Lets hope for the best
Click to expand...
Click to collapse
problem is most calibration settings/programs and methods i know of are non-pentile and are mostly software fixes for what ive used; AMOLED is different PenTile (RGBG) than what i tried to fix before which was Motorola Atrix 4G PenTile (RGBW, red green blue white), CCFL LCD is way different (more what im used to, as well as LED LCD and even IPS is easier as it is still RGB), and all the curves software etc are all proprietary to manufacturers. Granted controlling just the R/G/B/G LED's would help, but getting the curve right and correcting might take longer than the Galaxy S V arrival. I spent months calibrating all my gear; most of it is 2-3 years old, and at least 6-12 months old before i get it all settled and can rely on it for a given job. Usually i rely on calibrated displays, knowing my own color limitations, RGB histograms, vector scopes, etc (i have a very slight red/green color weakness, but extremely sharp vision and i know how to work around my limitations).
I actually emailed Samsung about this for as much information as i could get (not much so far but im digging). I have a friend playing with LUT curves on his S IV and he says its a close second to the iPhone screens for AdobeRGB in 'movie' mode, which i happen to agree with; its pretty flat, but the contrast on greens is still high, which again is a PenTile RGBG specific issue; we are both vets of backlit RGB panels. My friend also works with the same company i consult/represent; it took him almost three months to properly calibrate LUT curves between a single sensor and a simple 480P CCFL LCD display, and that was with full manufacturer support. Colorimetry is a science.
jetlitheone said:
When I pull my keyboard up to type on something or if I'm in a YouTube video and I tap the screen to bring up the progress bar the color shifts dramatically. I've tried many settings and it always does this.
Click to expand...
Click to collapse
Same here. Thanks for the write up but I'm seeing the same thing.
I dim the display with the Screen Filter app for reading in bed and whenever my keyboard pops up (SwiftKey, TouchPal or stock) the entire screen gets a green cast. Under these conditions it is very dramatic.
I use manual brightness and turned off the Autoadjust Screen Tone setting
Some other apps exhibit a fluctuation in color cast when I put my finger near the screen which is double weird. :-\
-darren
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Yes it's weird I don't know what's happening. Anyways I'd toy turn the brightness up past half way the color cast goes away. .. Not sure what it is
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
If you go to a settings menu and scroll up and down fast, my phone gets a purple tint and leaves like a shadow of the words behind... Kinda annoying.. Anyone else notice this?
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Yes smearing
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
MrPlNK said:
If you go to a settings menu and scroll up and down fast, my phone gets a purple tint and leaves like a shadow of the words behind... Kinda annoying.. Anyone else notice this?
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
thats because AMOLED usually have a slower response time, upwards of 20ms
jetlitheone said:
Yes smearing
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
Click to expand...
Click to collapse
yep, i have some old LG CCFL LCD monitors with a claimed 2ms (more like 6-10ms) response time from 2006; they were about $300 each back then. i also have a new IPS with 30ms response time; it is annoying.
also some pentile displays are slower between subpixels; my Atrix 4G had very slow blue white pixels (RGBW) so you had a weird dimming as well when scrolling through texts.
Settings, Display, disable Auto Adjust Screen Tone' as well, its a power saving thing i forgot to mention in the first write up.
Slade8525 said:
thats because AMOLED usually have a slower response time, upwards of 20ms
yep, i have some old LG CCFL LCD monitors with a claimed 2ms (more like 6-10ms) response time from 2006; they were about $300 each back then. i also have a new IPS with 30ms response time; it is annoying.
also some pentile displays are slower between subpixels; my Atrix 4G had very slow blue white pixels (RGBW) so you had a weird dimming as well when scrolling through texts.
Settings, Display, disable Auto Adjust Screen Tone' as well, its a power saving thing i forgot to mention in the first write up.
Click to expand...
Click to collapse
it can be fixed with color adjustment though so maybe a software update can fix it as well
I bought the s4 the first day it came out, after using it for couple of days i started noticing weird stuff on my photos, especially on low light photos... i went to att and one of the rep said its a known issue its called "elephant effect" im into photography and i havent heard that term before, he also said that it will be fix on the next update... so i went home and did some research about "elephant effect" unfortunately i cant can find anything related with my issue... i also did some pixel peeping and im 100% positive there's something off on the display of my phone.
Sample photos
These photos are just screenshots
You can see those weird artifacts on the pictures, i also compared my screen display to my coworker's phone and my phone was way off...
What i would suggest for those who wants to buy the new s4 or currently users, is to check the display by taking a photo on a low light and do some pixel peeping...
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Has anyone else noticed a color and contrast shift from the top to the bottom of the screen? In very low brightness settings my screen gradients from crushed black levels and a reddish hue at the top of the screen to a acceptable black levels and an more green hue at the bottom of the screen. I can try to get some pictures with my DSLR tonight to illustrate. I'll have to compare to other S4's in the same scenario. In every day use its not too noticeable, but while watching video in a completely dark environment with the brightness all the way down it now bothers me some.
Anyone have a similar experience? Thanks!
Yes I notice it. It fixes itself if you change the brightness with an app. so I'm guessing its a weird kernel thing. It only happens when the keyboard is up
Sent from my SAMSUNG-SGH-I337 using Tapatalk 2
jetlitheone said:
Yes I notice it. It fixes itself if you change the brightness with an app. so I'm guessing its a weird kernel thing. It only happens when the keyboard is up
Click to expand...
Click to collapse
I notice it with or without the keyboard. I use the Display Tester app to display a full screen white or 50% gray and now that I look at it, the red hue at the top of the screen is visible at all but 100% brightness levels. What app were you using to dim the screen, I would like to try it out.
Here is an exaggerated image I made showing the gradation (50% gray). The top of the screen would be to the left. Black levels get crushed at the top of the screen also.
(Sorry for the bad image compression, my screen doesn't have the extreme banding in it!)
WestonWW said:
I notice it with or without the keyboard. I use the Display Tester app to display a full screen white or 50% gray and now that I look at it, the red hue at the top of the screen is visible at all but 100% brightness levels. What app were you using to dim the screen, I would like to try it out.
Here is an exaggerated image I made showing the gradation (50% gray). The top of the screen would be to the left. Black levels get crushed at the top of the screen also.
(Sorry for the bad image compression, my screen doesn't have the extreme banding in it!)
Click to expand...
Click to collapse
screen adjuster, lags like hell but you can see it fixes it.
set values +5 for each color.
batanuenio said:
I bought the s4 the first day it came out, after using it for couple of days i started noticing weird stuff on my photos, especially on low light photos... i went to att and one of the rep said its a known issue its called "elephant effect" im into photography and i havent heard that term before, he also said that it will be fix on the next update... so i went home and did some research about "elephant effect" unfortunately i cant can find anything related with my issue... i also did some pixel peeping and im 100% positive there's something off on the display of my phone.
Sample photos
These photos are just screenshots
You can see those weird artifacts on the pictures, i also compared my screen display to my coworker's phone and my phone was way off...
What i would suggest for those who wants to buy the new s4 or currently users, is to check the display by taking a photo on a low light and do some pixel peeping...
Sent from my SAMSUNG-SGH-I337 using xda app-developers app
Click to expand...
Click to collapse
ill check that out; it looks like compression artifacts; what settings are you using when you shoot? also to internal or external SD card? and speed rating/brand/type of external SD card?
jetlitheone said:
screen adjuster, lags like hell but you can see it fixes it.
set values +5 for each color.
Click to expand...
Click to collapse
I tried that and it made little to no difference on my phone. I went to the AT&T store on my lunch and compared my phone to the display unit. My phone has a noticeable difference. The rep at the AT&T store suggested I take it to the local repair depot... I've never been there before but I hope they don't try to pawn a refurb phone off on me to replace my 17 day old S4. I'll let you guys know what I find out.
Slade8525 said:
ill check that out; it looks like compression artifacts; what settings are you using when you shoot? also to internal or external SD card? and speed rating/brand/type of external SD card?
Click to expand...
Click to collapse
I was using auto mode on my camera and used the internal mem.
batanuenio said:
I was using auto mode on my camera and used the internal mem.
Click to expand...
Click to collapse
did you zoom in, and what size (pixel wise) did you use? thats textbook macroblocking.
Hi my s4 have a yellow tint, i compare with other s4 and my s4 screen have much yellow in white screen, is faulty? Is possibile to fix it with gamma correction?
Hello fellow XDA members,
In the past I started some threads regarding Samsung AMOLED display quality, especially for the Note devices.
Please see here if you are interessted:
https://forum.xda-developers.com/note-4/general/note4-amoled-screen-quality-t2906365
https://forum.xda-developers.com/showthread.php?t=2463786
Now, with the S8+ (and the S8, the problem is the same), even the media recognized the display problems, known as "red tint", just google for it!
Samsung tells the people that this is due to wrong settings, and/or the adaptive display setting turned on! THIS IS NOT THE CASE!!!
I got 2 pieces of S8+ today, and both displays are not OK. One screen has the red tint issue, but only on the upper half of the screen.
The other device has no red tint, but is generally darker and looks more "washed out" and has a slight yellow tint.
So again the display lottery is back, it is only "luck of the draw" if you get a decent screen or not!!!
If you do not believe me just compare a few devices beneath each other with the exact same display settings. Turn adaptive display off, then go into the dialer and type *#0*#, with this you ensure the brightness settings are the same and you have the same sceen content on both devices. You will notice that every single device has a different screen quality (tint, evenness, ...)
What do you say? Acceptable or not?
With all of us over at the tmobile shipping thread we've been waiting and crying and hoping that we get our devices early....and then when we finally got our devices ****ty things like red tint leaves a sour taste in our mouths..sad really, samsung already made this device feel rushed with all the Bixby and fingerprint scanner awkward positioning and what did we do after the note 7 debacle? We forgave these fools...and now this?....i do feel bad for those that actually paid full retail price for these expensive devices and to unbox and realize the screen is pink...that right there is not how to say forgive us for our mistakes instead a huge f u to all the customers who were unlucky enough to get such a horrible display color....but I will say I won the lottery because out of the box my s8plus came out nice no red pinkish tint whites are white...but why am I still pissed? Because my note 4 was the same whites were white and then after a year or so my eyes were fixed on a strange color that was taking up half of the screen that came out of nowhere...so yes I will be forever paranoid with sammys displays now....if my s8plus came in like that I don't think I would've came back....but then again I'm here lol
Settle down guys, this will likely be fixed with a future fw given the attention its gotten, this is pretty simple for samsung to fix actually, all samsung needs to do is what video games have been doing for years; offer the user an option to calibrate based a sample image. Once thats in, the presets can be established based off of those generated values from the user selection.
It seems like they will indeed need to implement a fix of this sorts, because it does seem the displays hue varys from device to device.
Anyways, for the most part, I hardly notice it and it seems even, and the more I look at it, the more i can't make sense out of it? Seems to play tricks on my eyes... lol.
Beautiful phone and display though!
cantenna said:
Settle down guys, this will likely be fixed with a future fw given the attention its gotten, this is pretty simple for samsung to fix actually, all samsung needs to do is what video games have been doing for years, offer the user an option to calibrate based on a sample image provided, once thats in the presets can be established based off of those generated values.
It seems they will need to implement thia because the displays vary so from device to device.
Anyways, for the most part, I hardly notice it, it seems even, and the more look at it the more i can make sense out of it, seems to llay tricks on my eyes, lol.
Beautiful phone and display though!
Click to expand...
Click to collapse
This is a hardware problem, a real software fix IS NOT POSSIBLE!!!
Samsung can only try to cammo the problem with increasing the range of the color-sliders in the display settings, so that you can turn down red more then now. But this wont fix that the red tint is NOT EVEN ACROSS THE DISPLAY!!
What else proves that this is a hardware error is that if you put 5 devices next to each other (with the exact same settings), each of them will look different in regard to screen quality! Believe me, I know what I'm talking about, see my previous threads regarding that!
I agree that it should be even otherwise you may have a hardware problem but my concern is your criticism has more to do with amoled in gerneral and what we are observing is a consequence of the tech used. Samsung is also pushing the boundries here too with the display tech so the norms for amoled to compare to may not even apply anymore. And your comment to my comment regarding masking the problem, there is a reason why every display on the planet has picture settings.. right? No 2 displays are exactly the same...
I just went through the crap with my Surface Pro 4 too, trust me, they are a good example of no 2 displays alike, must have went though at least 11 Surface Pro 4 on my mission for perfection display and I had to give up in the end because truth is, its still an awesome device!
that happens when you get the early batches of s8+
h4ck3r69 said:
that happens when you get the early batches of s8+
Click to expand...
Click to collapse
Absolutely unacceptable reasoning. They shouldn't be putting out a product if the "early batches" are DEFECTIVE
Obviously it's a QC problem, which they seem to have some fairly big issues with, over and over.. They will lose customer faith if they keep doing this ****
ingenious247 said:
Absolutely unacceptable reasoning. They shouldn't be putting out a product if the "early batches" are DEFECTIVE
Obviously it's a QC problem, which they seem to have some fairly big issues with, over and over.. They will lose customer faith if they keep doing this ****
Click to expand...
Click to collapse
Perhaps but then again why did you buy a phone from samsung in the first place?.....
I was in the Samsung store yesterday for the launch party. They had 3 S8+ on display next to eachother. Each was running the exact same retail mode, showing the exact same content at the exact same time.
One display was white, one was red hued, and one was pee yellow.
(No, it wasn't display calibration settings, I checked).
There are definitely quality control issues.
GibMcFragger said:
I was in the Samsung store yesterday for the launch party. They had 3 S8+ on display next to eachother. Each was running the exact same retail mode, showing the exact same content at the exact same time.
One display was white, one was red hued, and one was pee yellow.
(No, it wasn't display calibration settings, I checked).
There are definitely quality control issues.
Click to expand...
Click to collapse
And which of the 3 do you have?
I noticed a slight pinkish tint when the shipping screen protector was on, but looks ok without it.
Something slightly different this year is there seems to be a pink tinge on all four sides of the display (top, bottom, left and right). It's a very consistent along the sides of the screen and very noticeable, a few people here have also noticed it: https://forum.xda-developers.com/galaxy-s8/help/red-tint-screen-t3592335
So it's not just another pink/yellow/blue/green spotty tinge problem, theres now uniformity with the example i've provided.
I've got the S8+ and the screen is not red at all. The left and right edges if anything have a slight blueish tone to them but I believe this to be the effect of the screen curving to the sides distorting the colour (Colour shift?).
Unless you have bought one and have the problem with it, you have no right to complain.
cantenna said:
And which of the 3 do you have?
Click to expand...
Click to collapse
Mine had a very slight pink tinge when I got it, at the very top and bottom (maybe half the status bar thickness), and it's since gone way.
The over all display color was a little too warm for my liking, so I knocked the red slider down to half, and now it's fine.
Got me and the wife one yesterday from At&t. No red tint and best phone yet. I love it.
My display is freaking beautiful and I love the fingerprint location. I never had any trouble. My finger finds it very naturally
Sent from my SM-G955U using Tapatalk
TML1504 said:
Hello fellow XDA members,
In the past I started some threads regarding Samsung AMOLED display quality, especially for the Note devices.
Please see here if you are interessted:
https://forum.xda-developers.com/note-4/general/note4-amoled-screen-quality-t2906365
https://forum.xda-developers.com/showthread.php?t=2463786
Now, with the S8+ (and the S8, the problem is the same), even the media recognized the display problems, known as "red tint", just google for it!
Samsung tells the people that this is due to wrong settings, and/or the adaptive display setting turned on! THIS IS NOT THE CASE!!!
I got 2 pieces of S8+ today, and both displays are not OK. One screen has the red tint issue, but only on the upper half of the screen.
The other device has no red tint, but is generally darker and looks more "washed out" and has a slight yellow tint.
So again the display lottery is back, it is only "luck of the draw" if you get a decent screen or not!!!
If you do not believe me just compare a few devices beneath each other with the exact same display settings. Turn adaptive display off, then go into the dialer and type *#0*#, with this you ensure the brightness settings are the same and you have the same sceen content on both devices. You will notice that every single device has a different screen quality (tint, evenness, ...)
What do you say? Acceptable or not?
Click to expand...
Click to collapse
=======
im not tying to be a jerk but just curious what happens when you cycle the --blue light filter-- button in the pull down menu with the wifi, Airplane mode ect.
reason i ask my displays is perfect but with the blue light filter on which is to reduce eyestrain ..then the display is very red
Really did not know they had this till i play around with it
Jonathan-H said:
I've got the S8+ and the screen is not red at all. The left and right edges if anything have a slight blueish tone to them but I believe this to be the effect of the screen curving to the sides distorting the colour (Colour shift?).
Unless you have bought one and have the problem with it, you have no right to complain.
Click to expand...
Click to collapse
I have an S8+ as per my posts in the other thread, so I have a right to complain.
Firstly, it could well be fixed by software, even if its uneven, HTC had issues with the camera doing this a number of years ago (big red spot in all pictures). It was fixed with software
Secondly, it might disappear with time. AMOLED, OLED and other self lighting technologies (like Plasma in TVs) have a bed in time, where some colour ranges need to burn in. I would suggest a full red screen using a screen tester app for a few hours, to see if it beds in the red.
Guys, I would like to take this device, there is a possibility of having a faded display?
So is anybody got not device yet that doesn't require the red to be turned all the way down in order to look somewhat appropriate?
Sent from my SM-G955U using Tapatalk
mopar said:
So is anybody got not device yet that doesn't require the red to be turned all the way down in order to look somewhat appropriate?
Click to expand...
Click to collapse
Red screen*
When I got this phone in my opinion it was clear whit but tgen when I tried reducing the red colour it became even more clearer, I don't know it's probably I didn't pay attention to the colour when I got this phone...
In my opinion the blue light filter messes up the display although I know this isn't the case..
I got a replacement new phone as I cracked the screen on my first one, and my new one, if anything is slightly cooler / bluer than I usually like, no red / pink issues I can see. My last one was ever so slightly reddish even with red slider down.
for me it is fixed after:
- specific sw update
- set adaptive display
- set display tone to cooler option (-1 or -2 from the slide bar in display settings)
Out of the box mine is fine. I swapped my first one that had a pinkish display even when red turned all the way down.
mopar said:
So is anybody got not device yet that doesn't require the red to be turned all the way down in order to look somewhat appropriate?
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
if i understand your question right then yes, there are devices without the ted tint issue!
I went into 4 shops and looked at 8 phones and everyone of them had the red /pink issue only 1 could you turn down red to reduce it in adaptive settings when it became blue/green white and all were red In photo and cinema settings
I bought my s8+ ten days ago, after two days I changed it because of pink borders... Before change, I powered on two new s8+, one were all red (not only borders), the other one was nearly perfect... But I had to choose another color (orchid gray) instead of my first black phone... It's a shame that we have to choose the phone from the color of display and not from the color of the phone...
Inviato dal mio SM-G955F utilizzando Tapatalk
My screen is pretty noticeably green-tinted, but it somehow gets corrected when sliding the cool / warm slider all the way to the right, making the display more warm. Even though the issue is too much green, making the display warmer seems to fix it somehow. I know that the issue is green, because sliding down the green slider under advanced options fixes it, while sliding down the blue or red one just makes it worse
And pro tip, you can combine the cool / warm slider with the advanced options RGB sliders, if the warm / cool slider isn't enough on its own. Perfect mix for me is the cool / warm slider all the way to the right, and green slider decreased by 1-2. You could fix a bright red display with the combination of the general slider and the RGB sliders
I'm still concerned that Samsung isn't taking this time to educate people of OLED calibration. They could put this entire thing to bed with just providing more than 2 marketing crafted sentences. Not one thing is wrong with the screen sans those with actual manufacturing issues of course. Microsoft takes their pixel sense displays, like apple and individually calibrates them. Its why you don't complain about color on iPhones and even surface PCs.
This has 0 to do with the display, the manufacturing process etc. It's just a step that Samsung and many other don't do to their phones. They take a lot # for screens produced, get them close to accurate, preprogram the variables for the entire lot and off ya go. The update is fine because all it does is give yu extended granular control over the calibrations. Once you set the point on all, you'll be fine.
Keep in mind that even if they were individually SRGB calibrated for perfect color space and white point, someone who find them to look off because as humans our perception of color varies tremendously. I hate overblown colors yet RGB 100% dead on is weak and dead to me.
Just use your settings to make your screen right for you. That's all. Don't yell at CS, don't sit in the store waiting for their next lot of phones. They will be variations of the same display with slightly more detailed calibrations. And you'll have wasted time waiting for something you can just do yourself with some patience and correct lighting.
Funny thing about red screen and pink tint. I have my s8 plus since a week. My device came with lots of red tint, then I got an update that really helped, but still wasn't perfect. After few days my screen lost pink/red tint without adjusting anything. Of course, little pink tint on the edges exist but it's due to screen specifics.
jackdforme said:
I'm still concerned that Samsung isn't taking this time to educate people of OLED calibration. They could put this entire thing to bed with just providing more than 2 marketing crafted sentences. Not one thing is wrong with the screen sans those with actual manufacturing issues of course. Microsoft takes their pixel sense displays, like apple and individually calibrates them. Its why you don't complain about color on iPhones and even surface PCs.
This has 0 to do with the display, the manufacturing process etc. It's just a step that Samsung and many other don't do to their phones. They take a lot # for screens produced, get them close to accurate, preprogram the variables for the entire lot and off ya go. The update is fine because all it does is give yu extended granular control over the calibrations. Once you set the point on all, you'll be fine.
Keep in mind that even if they were individually SRGB calibrated for perfect color space and white point, someone who find them to look off because as humans our perception of color varies tremendously. I hate overblown colors yet RGB 100% dead on is weak and dead to me.
Just use your settings to make your screen right for you. That's all. Don't yell at CS, don't sit in the store waiting for their next lot of phones. They will be variations of the same display with slightly more detailed calibrations. And you'll have wasted time waiting for something you can just do yourself with some patience and correct lighting.
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What your saying makes a lot of sense to me, maybe you can point me in the right direction here. I have the S8+ with a pink tinted screen and even pinker edges. Fortunately mine is consistent across the screen. I have 4 other Samsung phones and the Tab S 10.5, which all have great displays (at least to me they're all great). Every one has a slightly different white balance, but they're all nice. They also can be tilted at very strong angles and only have very minor tinting of the colors. Now, my S8+ has been updated and I've been able to get the edges to look great. I'm also able to get the main screen to a really nice white. Here's the two problems I'm running into that you might be able to help me learn how to fix and finish getting my phone to the quality I've grown to love with all of my other Samsung devices. If i adjust my whites in any giving environment, say inside, it looks wonderful, but as soon as I go elsewhere, like outside, or go from incandescent light to florescent, the whites will go to either redish again, or to a green/blueish. I've never had this on any of my other Samsung devices, I mean they do change from warm to cool depending on the environment I'm using them in, but they never look redish, or green/blueish like my S8+ does, they are warm or cool. That's what I'm trying to adjust my S8+ to do. I have all the great new tools that Samsung gave us in the latest update, but for some reason, I can't get it anywhere close to my other devices and have it stay that way when changing the lighting I'm in. The second problem I'm having is that if my phone isn't held almost perfectly straight on, it takes on a pink hue again. None of my other devices do this either. Like I said, all of my Samsung devices have different white balances, but they're still enjoyable to use. The main reason I've stayed strictly with Samsung is their displays, I'm a huge fan and just can't find any displays I enjoy more than Samsung's.....until now. If you can share any advice on anything I might be able to do to fix my S8+, I'd greatly appreciate it, this phone is the best one I've ever had, and I really don't want to have to return it and risk getting a dud. The display is really important to me and if i can get it to be at least as good as the worst of my other Samsung devices, it would be awesome! Thanks in advance for any advice!
gregoryostrom said:
What your saying makes a lot of sense to me, maybe you can point me in the right direction here. I have the S8+ with a pink tinted screen and even pinker edges. Fortunately mine is consistent across the screen. I have 4 other Samsung phones and the Tab S 10.5, which all have great displays (at least to me they're all great). Every one has a slightly different white balance, but they're all nice. They also can be tilted at very strong angles and only have very minor tinting of the colors. Now, my S8+ has been updated and I've been able to get the edges to look great. I'm also able to get the main screen to a really nice white. Here's the two problems I'm running into that you might be able to help me learn how to fix and finish getting my phone to the quality I've grown to love with all of my other Samsung devices. If i adjust my whites in any giving environment, say inside, it looks wonderful, but as soon as I go elsewhere, like outside, or go from incandescent light to florescent, the whites will go to either redish again, or to a green/blueish. I've never had this on any of my other Samsung devices, I mean they do change from warm to cool depending on the environment I'm using them in, but they never look redish, or green/blueish like my S8+ does, they are warm or cool. That's what I'm trying to adjust my S8+ to do. I have all the great new tools that Samsung gave us in the latest update, but for some reason, I can't get it anywhere close to my other devices and have it stay that way when changing the lighting I'm in. The second problem I'm having is that if my phone isn't held almost perfectly straight on, it takes on a pink hue again. None of my other devices do this either. Like I said, all of my Samsung devices have different white balances, but they're still enjoyable to use. The main reason I've stayed strictly with Samsung is their displays, I'm a huge fan and just can't find any displays I enjoy more than Samsung's.....until now. If you can share any advice on anything I might be able to do to fix my S8+, I'd greatly appreciate it, this phone is the best one I've ever had, and I really don't want to have to return it and risk getting a dud. The display is really important to me and if i can get it to be at least as good as the worst of my other Samsung devices, it would be awesome! Thanks in advance for any advice!
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Now that seems like it might actually be a dud. Or try first calibration outside. This seems silly but are you using auto bright and adaptive display?
jackdforme said:
Now that seems like it might actually be a dud. Or try first calibration outside. This seems silly but are you using auto bright and adaptive display?
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Ok, I will definitely try the calibration outside. I'm not sure I've tried it outside on a bright day yet. I am using the adaptive display setting and auto brightness, all of the other modes are quite pink and unusable, actually the tint is more of a magenta. I'm fairly certain its the adaptive display mode shifting my white balance in the various environments. Hopefully Samsung will somehow fix the other modes as well. The more I use my phone, the more I realize the biggest problem is the color shift that happens at angles. Almost any movement up, down, left, or right will produce a pink tint. If i go to an even stronger angle (around 75 degrees)the tint goes away. I can also get rid of it by turning both the red and blue down all the way and set the slider fully towards cool. The pink is gone when I do this, but then everything's really blue/green. Thanks for the suggestion, I'll definitely give it a try and let you know how it works.
I've tried calibrating my display outdoors, but the pink persists. I decided to send mine back to Samsung. They said they'll repair it lol. I'll just keep sending it in until it's right. I'm at Best Buy now to have Samsung flash my firmware like the factory asked, although it's not going to fix anything. I've looked at about ten various S8 phones on display and found only 2 with the problem, one of the was borderline ok, the other was just like mine. It's my first time seeing another S8, one that doesn't have the pink tint and it pretty much about took my breath away! The display was more beautiful than I had thought it would be. I just wish Samsung would simply make this right and swap out these faulty phones, heck I'd respect them for it. Having to jump through hoops on a brand new thousand dollar phone is ridiculous. I had debated about sending it in to Samsung, wondering if I was just being too picky. After seeing what the display is supposed to look like, there's no doubt in my mind that my display/phone/software, whatever, is defective. Grrrrrr
I received an update today and it has fixed my pink/red screen.
vimto25 said:
I received an update today and it has fixed my pink/red screen.
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Are you on csc SEE ?
vimto25 said:
I received an update today and it has fixed my pink/red screen.
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Carrier?
Sent from my SM-G955U using XDA-Developers Legacy app
jackdforme said:
Carrier?
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XEU
gregoryostrom said:
I've tried calibrating my display outdoors, but the pink persists. I decided to send mine back to Samsung. They said they'll repair it lol. I'll just keep sending it in until it's right. I'm at Best Buy now to have Samsung flash my firmware like the factory asked, although it's not going to fix anything. I've looked at about ten various S8 phones on display and found only 2 with the problem, one of the was borderline ok, the other was just like mine. It's my first time seeing another S8, one that doesn't have the pink tint and it pretty much about took my breath away! The display was more beautiful than I had thought it would be. I just wish Samsung would simply make this right and swap out these faulty phones, heck I'd respect them for it. Having to jump through hoops on a brand new thousand dollar phone is ridiculous. I had debated about sending it in to Samsung, wondering if I was just being too picky. After seeing what the display is supposed to look like, there's no doubt in my mind that my display/phone/software, whatever, is defective. Grrrrrr
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There is no chance I'd allow Samsung to "repair" my phone. This thing is brand new. You make them get you a BRAND NEW device out of a box you open in wherever you purchased it. Then you move forward in the store and check that display and all other fun things. Once satisfied, buy that unit. Why ever take a repair on something less than 1 month old. Have fun selling my OG unit as a refurb Sammy!
Hello guys,
I'm an owner for an Exynos S8+.
Phone has some red tint but that doesn't bother me much.
However, yesterday I noticed a new problem, while I was in bed, with all lights down and at lowest brightness, I noticed gray images displayed are darker on the right half of the screen than the left.
Some sort of artifacts show up and the screen looks all smudged.
So my question to you is,
can you open this image http://imgur.com/a/vXjac on lowest brightness and on a completely dark room and tell me if you see any smudges on your screen. You can also drop the notification shade down to make the supposedly artifacts more visible.
I believe those "smudges" are created by just how the amoled panel is made / works, since all my amoled devices (including the S8+) have those when viewing in the dark. It was worse on my old phone (S6E+), and you could also see the "smudges" in sunlight as vertical lines of more light and more dark up and down the screen.
galaxyYtester said:
I believe those "smudges" are created by just how the amoled panel is made / works, since all my amoled devices (including the S8+) have those when viewing in the dark. It was worse on my old phone (S6E+), and you could also see the "smudges" in sunlight as vertical lines of more light and more dark up and down the screen.
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But can you see it on your S8/S8+?
I tried the same image under the same conditions on my S7Edge and it doesn't happen.
As it stands, my S8+ showing that image on lowest brightness and dark room has the right half of the screen darker than the left side wtih smudges in between.
Looks horrible and I'm not sure I can get it replaced.
I had this issue before last time when purchasing the Tab S 2. I went back to shop ask them go in the completely dark room and show them. They exchange a new one for me.
If your phone had no constant display of dark grey, I suggest you bring back to shop for changing.
Andrewtst said:
I had this issue before last time when purchasing the Tab S 2. I went back to shop ask them go in the completely dark room and show them. They exchange a new one for me.
If your phone had no constant display of dark grey, I suggest you bring back to shop for changing.
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So, when you replicate my issue on your S8+, you have a clear dark grey image without any colour distortion?
I'm going to the store tomorrow but I'm afraid they'll send it in for warranty instead of trading it in for a new one.
username4this said:
So, when you replicate my issue on your S8+, you have a clear dark grey image without any colour distortion?
I'm going to the store tomorrow but I'm afraid they'll send it in for warranty instead of trading it in for a new one.
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Yup clear dark grey without any distortion.
I suggest you go back store and exchange it. Just use demo set to proof it no such issue.
has anyone else noticed this?
Weird Green banding in dark mode and low brightness
Did a factory reset for battery purposes and noticed this... didn't think i saw it before I reset it??
Soz for the bad pic but basically the left side has a big green tint
Yes... I think many of us have it. The display is also slightly yellowish when it is showing white colors when compared to Note 10+
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So odd that i didn't notice before
Could have sworn it wasn't there before I reset
podface said:
has anyone else noticed this?
Weird Green banding in dark mode and low brightness
Did a factory reset for battery purposes and noticed this... didn't think i saw it before I reset it??
Soz for the bad pic but basically the left side has a big green tint
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Some users have reported that in Reddit and SamMobile. I posted a thread a couple of weeks back here:
https://forum.xda-developers.com/ga...n-affected-t4153251/post83406075#post83406075
I have reported this in this forum as well. Mine is more a yellowish tint to the overall display. When you look at chrome or YouTube in dark mode, you'll notice the blacks aren't as deep. I have come across 3 different note 20 ultra with the issue which leads me to believe most if not all units have this even if not many ppl report it.
I saw it yesterday when its on low brightness and dark mode on. Even when watching prime video there is green tint though I brought whole green hue to 0
Any of my devices with amoleds look green to me. Must be 65 y.o. vision. Did the trick of turning down the green all the way. No dice.
I use a neat app from the play store called Screen Balance which is a Godsend. You can really fix the tinting with it. I like cooler colors without green and it does the job... but... the saturation and contrast in the Ultra just isn't up to snuff. I only notice it when I put the phone side by side with the Note 9. I have Screenbalance installed in both devices, and the 9 beats the Ultra firmly.
Thoughts or updates?
dorpmuller said:
Any of my devices with amoleds look green to me. Must be 65 y.o. vision. Did the trick of turning down the green all the way. No dice.
I use a neat app from the play store called Screen Balance which is a Godsend. You can really fix the tinting with it. I like cooler colors without green and it does the job... but... the saturation and contrast in the Ultra just isn't up to snuff. I only notice it when I put the phone side by side with the Note 9. I have Screenbalance installed in both devices, and the 9 beats the Ultra firmly.
Thoughts or updates?
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You don't need an app for colour filters, it's also in Settings > Accessibility > Visibility Enhancements > Add colour filter
And also in the same location > Colour Adjustment
*Detection* said:
You don't need an app for colour filters, it's also in Settings > Accessibility > Visibility Enhancements > Add colour filter
And also in the same location > Colour Adjustment
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All I saw was Add Color Lens but at the lowest number washed everything over with the chosen color. Same with color adjustment-barely any changes with the sliders even though I do have the green at zero.
That app is the ticket for me. It has various filters for different screens and the one I chose I adjust for *just* a hint of blue-takes out the greenish without putting a visible tint over everything. I do it on every device I have and for me, works great. Believe me, I've tried everything with every amoled and it's the most workable for me, and I'm anal about this stuff. :rolleyes
dorpmuller said:
All I saw was Add Color Lens but at the lowest number washed everything over with the chosen color. Same with color adjustment-barely any changes with the sliders even though I do have the green at zero.
That app is the ticket for me. It has various filters for different screens and the one I chose I adjust for *just* a hint of blue-takes out the greenish without putting a visible tint over everything. I do it on every device I have and for me, works great. Believe me, I've tried everything with every amoled and it's the most workable for me, and I'm anal about this stuff. :rolleyes
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Ah I'm running the Android 11 beta so looks like they renamed a few things, but they're the same settings, yes I tried those settings too and got the same effect, I assumed that was what the app did too, looks like it works a bit differently to the stock settings method.
Great you found a solution anyway
*Detection* said:
Ah I'm running the Android 11 beta so looks like they renamed a few things, but they're the same settings, yes I tried those settings too and got the same effect, I assumed that was what the app did too, looks like it works a bit differently to the stock settings method.
Great you found a solution anyway
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Yeah, the app works reallt well. Did you try it?
dorpmuller said:
Yeah, the app works reallt well. Did you try it?
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I don't have the green tint issue thankfully, I did install it to have a look but the free version is limited to one colour and setting so couldn't explore it much, but have bookmarked it incase any future devices suffer from it, thanks.
dorpmuller said:
All I saw was Add Color Lens but at the lowest number washed everything over with the chosen color. Same with color adjustment-barely any changes with the sliders even though I do have the green at zero.
That app is the ticket for me. It has various filters for different screens and the one I chose I adjust for *just* a hint of blue-takes out the greenish without putting a visible tint over everything. I do it on every device I have and for me, works great. Believe me, I've tried everything with every amoled and it's the most workable for me, and I'm anal about this stuff. :rolleyes
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Thanks for the "Screen Balance" app! This app seems to be the only one that gives the fine tuning for white balance without turning Vivid mode ON. It has significantly reduced the yellow tint on my N20 Ultra. I did notice however that it makes the text on screen a little bit less sharp.
I don't have the green tint either. Was all in my head.
Then again maybe not. Lol. I see it and don't see it at night. Regardless of 120 or 60Hz.
VICosPhi said:
Thanks for the "Screen Balance" app! This app seems to be the only one that gives the fine tuning for white balance without turning Vivid mode ON. It has significantly reduced the yellow tint on my N20 Ultra. I did notice however that it makes the text on screen a little bit less sharp.
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I did by going into visibility enhancements, personalized & chose the colours & voila natural mode is now much more white & saturated.
RISHI RAJ said:
I did by going into visibility enhancements, personalized & chose the colours & voila natural mode is now much more white & saturated.
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I did that also, but there was still significant yellow tint. The app helped me reduce the yellow tint quite a bit
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Well the green tint keeps coming and going on mine.
Noticeable at low light and night time usage when device is in dark mode. Sent it back., I’m nothaving this issue hover over my head with no warranty after dropping over 4 digits on this device.
Limeybastard said:
Well the green tint keeps coming and going on mine.
Noticeable at low light and night time usage when device is in dark mode. Sent it back., I’m nothaving this issue hover over my head with no warranty after dropping over 4 digits on this device.
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Sent it back for a replacement or returned it to go to a different phone ?
seczdbz said:
Sent it back for a replacement or returned it to go to a different phone ?
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I ordered another one, unfortunately USA model with crippled dual sim functionality. Least I have 12 months peace of mind now. Oh well...
Limeybastard said:
I ordered another one, unfortunately USA model with crippled dual sim functionality. Least I have 12 months peace of mind now. Oh well...
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Interesting.....I guess I'm one of the few lucky ones with no green tint or I'm just not noticing it....let us know how your new one is !!! The only "problem" I've had with mine is a little speck of dust inside the camera module but its not on the lens so it doesn't affect my pictures ??*