[Q] Screen Color Temperature - Barnes & Noble Nook Tablet

While using my Tablet throughout the last month, one thing has really been bugging me. The screen seems to be very yellow. Rather than showing white screens as white, they're off-white, greys look a bit darker and greener than they should. The color temperature of the screen is very warm, and it bugs me. Anyone else experience this? Or do I just have a bad screen?
Better question, does anyone know of a fix for this? I'm hoping it's not a hardware problem, but a software one.

Try taking a screenshot ("n" + volume down) of this and let us look at it. I'm guessing if its yellow to us as well, its s software issue. If not, its likely a hardware issue.
Judging by your screen temp, early guess its a hardware problem, but lets see what the screencap shows.
Sent from my Nook Tablet using (((sonicboom)))

There is app called Screen Adjuster that you can grab from the market. It will allow you to change the color of the screen. I use it for night reading tobreduce the blue.
Just remember to disable it when installing apps. Otherwise the install button will be disabled.

Alright, so I grabbed a screenshot and sent it to my Droid X, which has a totally neutral color warmth, and the shot looked perfect. That's a little depressing, but still, something tells me that it has to do with the stock B&N, cause I know Google did something like this with the Nexus S for "enhanced contrast" or something like that.
I know this is probably wishful thinking, but I'd still like to believe there's a way to fix this.
Also, I tried Screen Adjuster, but it doesn't seem to fix the problem. It seems to just put a filter over the screen.

There was a thread about the color temprature early on in the life of this forum. The OP is a professional photographer and was bothered by the color balance of the NT: http://forum.xda-developers.com/showthread.php?t=1354639&highlight=warm .

conundrum768 said:
There was a thread about the color temprature early on in the life of this forum. The OP is a professional photographer and was bothered by the color balance of the NT: http://forum.xda-developers.com/showthread.php?t=1354639&highlight=warm .
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Touche. I did try the fix listed in there, but it didn't work (for a number of reasons). The problem has essentially been ignored since then, so I'm assuming either it doesn't bother that many people, or I have a defective unit. That's why I'm asking if anyone else notices it.
Though now this thread does seem redundant..

Seems the NT is a bit more yellow than standard.
http://www.displaymate.com/IPS_Tablet_ShootOut_1.htm
The Nook Tablet also has a very good factory display calibration. Its gray-scale is actually more accurate than most living room HDTVs. The White Point at 6,016K degrees is somewhat more yellowish than the 6,500K standard – that was most likely done in order to increase the screen’s maximum brightness, power efficiency, and battery run-time.
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Click to collapse

Related

Screen problem: slightly visible moire-effect like pattern

I bought this phone 2 days ago, new, sealed, free from contract, and so far I love everything about it, except for this problem which I have found only today. I guess It was all the first excitement keeping me to notice earlier.
Like the thread's title says, it's like a perfect pattern across the screen, from edge to edge, consisting in perfect parallel 10-degrees-from-horizontal-oblique stripes. They are very very subtle and only visible on light backgrounds and more from looking from the upper part of the screen down.
Do not confuse them with the pixels matrix, whose density, by the way, is great. They are all right, and the effect described above seems to appear on a layer which is on top of those pixels.
To make an almost perfect comparison, this effect looks almost like the striped background from market.android.com (as seen on a computer), but with more subtle greish on white stripes inclined from right to left, and only like 10 degrees oblique from the horizontal. That is what's making me curious, why is that pattern oblique? If it were straight horizontals or verticals I would have confused them with the pixels arrays, and it would have been bearable. But like they are I can't stop but notice this pattern every time and it annoys me a lot! In GMail, Browser etc... all the apps with plain backgrounds...
It wouldn't appear on any close picture I tried to take, and I guess filming for you to see it isn't a good idea either, because you won't notice it. It's only visible with the naked eye, at a distance closer than 30 cm from the screen. It isn't also a problem of my eyes, because my wife is noticing it too.
Thank for any shared thought.
stnel said:
I bought this phone 2 days ago, new, sealed, free from contract, and so far I love everything about it, except for this problem which I have found only today. I guess It was all the first excitement keeping me to notice earlier.
Like the thread's title says, it's like a perfect pattern across the screen, from edge to edge, consisting in perfect parallel 10-degrees-from-horizontal-oblique stripes. They are very very subtle and only visible on light backgrounds and more from looking from the upper part of the screen down.
Do not confuse them with the pixels matrix, whose density, by the way, is great. They are all right, and the effect described above seems to appear on a layer which is on top of those pixels.
To make an almost perfect comparison, this effect looks almost like the striped background from market.android.com (as seen on a computer), but with more subtle greish on white stripes inclined from right to left, and only like 10 degrees oblique from the horizontal. That is what's making me curious, why is that pattern oblique? If it were straight horizontals or verticals I would have confused them with the pixels arrays, and it would have been bearable. But like they are I can't stop but notice this pattern every time and it annoys me a lot! In GMail, Browser etc... all the apps with plain backgrounds...
It wouldn't appear on any close picture I tried to take, and I guess filming for you to see it isn't a good idea either, because you won't notice it. It's only visible with the naked eye, at a distance closer than 30 cm from the screen. It isn't also a problem of my eyes, because my wife is noticing it too.
Thank for any shared thought.
Click to expand...
Click to collapse
Much better to send you're mobile to the store were you bought it. because as what i have know the problem is the LCD. that is what they called wire stripe or ribbon.... maybe that is the problem. Try it, there is noting to lose.....
I see that too, only on light (white) backgrounds. I thinks it's normal, you may ask your local Sony Ericsson customer service or a phone shop, but I don't think this is a production fault.
On a dark blackground it is purely invisible.
Try it with and without the Bravia engine enabled.
kirbygonzalo said:
Much better to send you're mobile to the store were you bought it. because as what i have know the problem is the LCD. that is what they called wire stripe or ribbon.... maybe that is the problem. Try it, there is noting to lose.....
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Click to collapse
kirbygonzalo, thanks but even googling it I couldn't find anything about wire stripe or ribbon.
sdk16420 said:
I see that too, only on light (white) backgrounds. I thinks it's normal, you may ask your local Sony Ericsson customer service or a phone shop, but I don't think this is a production fault.
On a dark blackground it is purely invisible.
Click to expand...
Click to collapse
sdk16420, thanks for sharing this, It is somehow a relief for me to know I'm not alone in this. Yet, I'll wait until next week to see if I can find more explanations, and then maybe I'll return it for a replace. It's especially bad for me, as I waited a lot to receive the silver one (a week or so), and I don't know if I can find another.
LenAsh said:
Try it with and without the Bravia engine enabled.
Click to expand...
Click to collapse
It doesn't depend on Bravia Engine, unfortunately. It was also the first thing that came into my mind, tried it several times, even with deactivating and rebooting, but the effect is persistent.
Again, it's only visible on light backgrounds, especially white and large ones (browser, gmail, etc). If you read this, please check yours also find some time to post a reply with the result. I would be very grateful.
Thanks!
I have the blue model but i can barely see that pattern with a screen flashlight (on full white) and i don't find it annoying at all in daily use of the phone.
You can check the screen from a new phone in a shop, to see if it looks like yours ... or you have a eagle eye
PS
check softpedia also
I think I can see what you're talking about on my Red Neo but only if I max the screen brightness and look really closesly (like practically inserting the Neo into my eye). 99.99% of the time I don't notice a thing.
I just followed your description and found the same with my neo, so I think it the LCD design. Not an issue to me indeed.
Does anyone have another phone model (e.g. Samsung, HTC) with a LCD touchscreen? Is it also visible on other phones?
sdk16420 said:
Does anyone have another phone model (e.g. Samsung, HTC) with a LCD touchscreen? Is it also visible on other phones?
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I have a Samsung Galaxy S with SAMOLED, a HTC Desire with S-LCD and an Asus Transformer with IPS LCD, and they all have better screens. The Desire's is the most problem free, whereas the Galaxy S has problems with screen burn-in (or image retention, like some are identifying it, but for me it's still like the old good plasma screen burn-in ), and the Transformer's has light bleeding. But, like I said, when put aside, the Neo's looks the worst.
I don't know if you noticed it already, but it comes with another "feature" that is so annoying: it stays always on auto brightness regardless of the custom level set, maxing that automation on that custom level. It's so annoying, cause it's always too dark for me, and being a "feature" it doesn't have also a switch for that. At least it has for Bravia....
stnel said:
I have a Samsung Galaxy S with SAMOLED, a HTC Desire with S-LCD and an Asus Transformer with IPS LCD, and they all have better screens. The Desire's is the most problem free, whereas the Galaxy S has problems with screen burn-in (or image retention, like some are identifying it, but for me it's still like the old good plasma screen burn-in ), and the Transformer's has light bleeding. But, like I said, when put aside, the Neo's looks the worst.
I don't know if you noticed it already, but it comes with another "feature" that is so annoying: it stays always on auto brightness regardless of the custom level set, maxing that automation on that custom level. It's so annoying, cause it's always too dark for me, and being a "feature" it doesn't have also a switch for that. At least it has for Bravia....
Click to expand...
Click to collapse
When I put brightness on 100%, and hold my finger on the light sensor, I don't see the screen getting darker. What does annoy me is that you can't make the brightness less than about 30%. I use widgetsoid for brightness adjustment, and the screen will only become darker than 30% if I hold my finger on top of the sensor. That sucks. I I want to sacve energy, I have to hold my hand there, while using the phone.
I don't see why people need the brightness that high anyways, aside from in some games with small hard to see details I'm perfectly fine with my brightness set at just 30% or even just 20%...heck I can still use the phone when the brightness is completely off though that does get a little hard to see everything.
SCHUMI_4EVER said:
I don't see why people need the brightness that high anyways, aside from in some games with small hard to see details I'm perfectly fine with my brightness set at just 30% or even just 20%...heck I can still use the phone when the brightness is completely off though that does get a little hard to see everything.
Click to expand...
Click to collapse
I use it a lot outside, and its sunlight legibility isn't as good as SAMOLEDs or others, but that I knew from reviews before the buy. If it wasn't for the problem in this thread, I wouldn't be so harsh on it.
LE I se new posters here. Do you noticed the problem described in the first post? Does it bother you?

PWM or backlight failure?

I'm experiencing either a defect or an unfortunate feature on this tablet. I just took delivery of a new one, and while viewing any solid colors besides grey on the screen everything is fine (also no dead pixels), but I'm noticing what appears to be slight backlight flickering/pulsing whenever grey or light blue is shown on the screen. It seems to be PWM (pulse width modulation) of the leds, but I can't be certain it's a defect or just the unfortunate way these tablets' led screens are designed. It's a very subtle but consistent and annoying pulse, but it's definitely there. Can anyone confirm that PWM is what's going on with these tablets or if this is a defective screen. The screen doesn't pulse at all on any other colors solid or only partially filling the screen or otherwise.
I haven't noticed anything on mine, though I tend to keep the backlight fairly low (17%).
One thought though which is why I'm saying anything, I remember on the nexus 7 there was an issue with one of the friction pins not connecting to the back of the case's antenna fully sometimes, which would cause the radio/wifi to suck extra power resulting in backlight pulses... have you tried turning on airplane mode (disable the cellular) with wifi off to see if that makes a difference? Though it would be odd if it only affected the one colour... I suppose it could be your ambient light source too, does it do it in sunlight?
joeblowma said:
I haven't noticed anything on mine, though I tend to keep the backlight fairly low (17%).
One thought though which is why I'm saying anything, I remember on the nexus 7 there was an issue with one of the friction pins not connecting to the back of the case's antenna fully sometimes, which would cause the radio/wifi to suck extra power resulting in backlight pulses... have you tried turning on airplane mode (disable the cellular) with wifi off to see if that makes a difference? Though it would be odd if it only affected the one colour... I suppose it could be your ambient light source too, does it do it in sunlight?
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Click to collapse
Good idea! Unfortunately, killing the antennas doesn't affect it. And there's no ambient light sensor on the g pad x, so that's out as well I'm so disappointed because there are not dead pixels and only very little light bleed in the corners too.
I didn't mean ambient light sensor would be the cause, more that perhaps you have bulb/s that cycle at a specific rate at a certain colour range that would cause a subtle flicker, I always found those big long roof fixture fluorescent tube lights bad for this sort of thing... I notice some "out of the corner of my eye" subtle flickering on my PC LCD when I have the one CFL on, but not when I have the other LED lamp going instead for example. I just tried a LCD screen tester with various solid colours (cyan, blue) and the only 'flickering' I'm seeing is if I actually move the screen, this panel has some waviness in it that is visible when the screen is off and you angle it just right under a light which seems to pop out on these blues with the backlight turned up - but only when the screen is physically moving. Definitely not a perfect panel, but for me nothing like what you are talking about.
I'm outta ideas though, unless you are running a custom firmware and it does something different than what my stock does.
GL
edit:/ just read that RFD post from the other thread, and I definitely notice a flicker when in nova's app drawer. It seems to occur only right after I move the tablet and only noticeable at higher backlight settings, if I set it down flat and don't move it, it doesn't do it. Perhaps related to the gyro sensor? Something not isolated fully/properly would be my guess. With the wifi turned on, it also does it along with the activity up/down arrows on the logo... now that I've seen it I wonder if its going to bother me on lower brightness levels now :silly:
joeblowma said:
edit:/ just read that RFD post from the other thread, and I definitely notice a flicker when in nova's app drawer. It seems to occur only right after I move the tablet and only noticeable at higher backlight settings, if I set it down flat and don't move it, it doesn't do it. Perhaps related to the gyro sensor? Something not isolated fully/properly would be my guess. With the wifi turned on, it also does it along with the activity up/down arrows on the logo... now that I've seen it I wonder if its going to bother me on lower brightness levels now :silly:
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Click to collapse
Thanks for checking. I tried the airplane mode setting, and I swear that fixed it. But then it came back after a few more toggles of data/wifi. Given that you're seeing it too and that others have reported seeing it as well in the RFD thread, I'm thinking it isn't a defect but rather poor design. There's little chance it would be this widespread and only on the exact same color combo for everyone. I think most people just never notice it since you're rarely just looking at a solid or mostly solid grey screen. I wonder if there's a way to disable the gyro on a stock/non-rooted gpad like mine? For me, it does it regardless of brightness level.
I've seen this on different devices too, so it's not just a G Pad X thing. I wanna say I've seen it on my Nexus 5 back in the day, but I've had many devices so it's hard to remember. But yep, noticed it happens on "grey" colors. It's much less noticeable with the brightness lowered. Never really bothered me so never posted about it.
emilyrugburn said:
I've seen this on different devices too, so it's not just a G Pad X thing. I wanna say I've seen it on my Nexus 5 back in the day, but I've had many devices so it's hard to remember. But yep, noticed it happens on "grey" colors. It's much less noticeable with the brightness lowered. Never really bothered me so never posted about it.
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Click to collapse
My guess is it's the led pulse width modulation. It affects some screens more than others, but is an issue with led implementation on lcd screens in general. I'm leaning towards keeping the tablet as I'm 99% convinced that another unit would exhibit the exact same behavior. Glad to hear it isn't a defect, but sad that they did not manufacturer a better screen.
Jottle said:
My guess is it's the led pulse width modulation. It affects some screens more than others, but is an issue with led implementation on lcd screens in general. I'm leaning towards keeping the tablet as I'm 99% convinced that another unit would exhibit the exact same behavior. Glad to hear it isn't a defect, but sad that they did not manufacturer a better screen.
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Click to collapse
I don't want to clutter this thread any further, but I'm going into a B&M t-mo store to see if I can test this out on a display device to confirm how widespread this issue is.
Quick update on the flicker issue. It's a problem with all the units, or perhaps just poor design. I did a warranty exchange, and the replacement unit had the exact same issue. Oh well. Just time wasted I guess.
I have the same exact issue with the one i got my mom. Fortunately it doesn't bother her too much but it definitely seems to be a design flaw as we also returned it with the return unit having the same issue
Welcome to the world of flicker.
What you are seeing is very common and an unfortunate side effect of cheap reference designs and a don't care attitude.
There are many new standards for flicker but I doubt they'll be implemented. Flicker pwm needs to be in the 10khz range to be indistinguishable to constant current drives.

Mediapad M5 pro panel brightness white background

Does any tablet owner here of M5 or same family tablet, has noticed if one of your display has an edge or sideline that is slightly slightly darker, during using a fully white background?
On my m5 Pro I've noticed that with a fully white backgroud, I do have an edge, close to the left bottom corner (holding the tablet horizontally) that is slightly gray rather than the right side. Off course that: if I'm rotating it, then it Will happear to the top instead.
If you don't stay there and looking at it for a minute, you don't notice it. But if you look at it and compare to the rest of the screen or other side, then you'll see this small difference.
Do you have same issue? Does it is an IPS display issue?
Ah! It makes it only with the White. Only the White. Other colors comparisions are fine.
Looking videos, pictures or anything else that does not push the screen to a very high density white in that side, it's fine.
You can try to see if you're having the same of opening the cleaning chache program, where there is a lot of White all around the screen. There you can watch side by side and every corner... and you can try too see if somewhere do you have a slightly white difference compared to the rest.
But as said above. Only white make this.
Videos, pictures with same colors side to side are fine. It's all about the White.
I've contacted the Huawei assistance trough Phone and they said that is normal and panels might do this, and if in doubt, I'm free to go to the Local official technical assistance in my town to have a confirm for it .
So I've done that! I've moved to the Local technical assistance and the technician told me that it might happens and it is not worthy of a repair, because changing panel might not solve the problem as this slightly slightly brightning difference might show on another side. Has more sense to wait if in these 2 years something going worse and repair it over warranty.
It's hard to see this difference of White brightness, and I've noticed that just because I'm a really fussy guy and ... off course I don't spend my time on surfing on the menus. It's also a post to understand it these kind of IPS panels may encount these issues.
Anyone here is experiencing this thing? Or are you watching all the sides of your tablet to see if do you have it aswell? :laugh:
It's called uneven brightness, and reading notebookcheck's review said that it is above average. Seems you have received a dud, but it's likely within tolerance im afraid.
Michaelflat1 said:
It's called uneven brightness, and reading notebookcheck's review said that it is above average. Seems you have received a dud, but it's likely within tolerance im afraid.
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Click to collapse
Are you sure It's a dud? In a FB group a guy said that he's even worse on his 8.4 because he has it all over the edges . And on a previous M3 he got, there was an even worse side with less brightness. And so He returned the tablet.
In my case, it's so soft that you don't notice it at all. You do have to search for it. And it happens only with the White.
It the technician in the store told me it's not worth a replace the panel, this slightly brightness might happpen and same issue might happen in another side, nobody knows. I wish to beleive him . Why He would had lied to me?
Anyway I've read the m5 review and they are showing the characteristic of the brightness all over the display. Yea, it is seems a trait of it, and a 0,25 cd/m2 is barely perceivable.
What's your opinion?
andreawars said:
Are you sure It's a dud? In a FB group a guy said that he's even worse on his 8.4 because he has it all over the edges . And on a previous M3 he got, there was an even worse side with less brightness. And so He returned the tablet.
In my case, it's so soft that you don't notice it at all. You do have to search for it. And it happens only with the White.
It the technician in the store told me it's not worth a replace the panel, this slightly brightness might happpen and same issue might happen in another side, nobody knows. I wish to beleive him . Why He would had lied to me?
Anyway I've read the m5 review and they are showing the characteristic of the brightness all over the display. Yea, it is seems a trait of it, and a 0,25 cd/m2 is barely perceivable.
What's your opinion?
Click to expand...
Click to collapse
my M5 is perfect, no noticeable differences in brightness anywhere. Notebookcheck said that the 8 in model has poorer display anyway.
If it's not noticeable in normal use then it's fine.
Michaelflat1 said:
my M5 is perfect, no noticeable differences in brightness anywhere. Notebookcheck said that the 8 in model has poorer display anyway.
If it's not noticeable in normal use then it's fine.
Click to expand...
Click to collapse
Nah...exept The White background, it's ok on all use.
But as said above, if I do watch that edge to try to catch the eye to find this difference.
Technician said it's ok. Hope it is. I just want to know if anyone experienced this with this model or any other tablet with IPS display
Michaelflat1 said:
my M5 is perfect, no noticeable differences in brightness anywhere. Notebookcheck said that the 8 in model has poorer display anyway.
If it's not noticeable in normal use then it's fine.
Click to expand...
Click to collapse
Is there any reliable software for Android to do the same thing done by notebookcheck and testing the brightness? Like this:
I've checked that one on playstore, but I did not find nothing.
Any suggestion?
andreawars said:
Is there any reliable software for Android to do the same thing done by notebookcheck and testing the brightness? Like this:
I've checked that one on playstore, but I did not find nothing.
Any suggestion?
Click to expand...
Click to collapse
You need something that can detect the brightness, usually expensive hardware that connects to a windows machine. I think they start at around $500 or so. You could rent one i suppose. (if you could find somewhere or someone!).
But yeah it needs hardware.
andreawars said:
Does any tablet owner here of M5 or same family tablet, has noticed if one of your display has an edge or sideline that is slightly slightly darker, during using a fully white background?
On my m5 Pro I've noticed that with a fully white backgroud, I do have an edge, close to the left bottom corner (holding the tablet horizontally) that is slightly gray rather than the right side. Off course that: if I'm rotating it, then it Will happear to the top instead.
If you don't stay there and looking at it for a minute, you don't notice it. But if you look at it and compare to the rest of the screen or other side, then you'll see this small difference.
Do you have same issue? Does it is an IPS display issue?
Ah! It makes it only with the White. Only the White. Other colors comparisions are fine.
Looking videos, pictures or anything else that does not push the screen to a very high density white in that side, it's fine.
You can try to see if you're having the same of opening the cleaning chache program, where there is a lot of White all around the screen. There you can watch side by side and every corner... and you can try too see if somewhere do you have a slightly white difference compared to the rest.
But as said above. Only white make this.
Videos, pictures with same colors side to side are fine. It's all about the White.
I've contacted the Huawei assistance trough Phone and they said that is normal and panels might do this, and if in doubt, I'm free to go to the Local official technical assistance in my town to have a confirm for it .
So I've done that! I've moved to the Local technical assistance and the technician told me that it might happens and it is not worthy of a repair, because changing panel might not solve the problem as this slightly slightly brightning difference might show on another side. Has more sense to wait if in these 2 years something going worse and repair it over warranty.
It's hard to see this difference of White brightness, and I've noticed that just because I'm a really fussy guy and ... off course I don't spend my time on surfing on the menus. It's also a post to understand it these kind of IPS panels may encount these issues.
Anyone here is experiencing this thing? Or are you watching all the sides of your tablet to see if do you have it aswell? :laugh:
Click to expand...
Click to collapse
What did you decide? I have one side that is darker or M5 10.8, not a pro version.
Should I try to replace it? It does not bother me much and I read here that there are more units, that come with more darker sides/edges.
kaimyns said:
What did you decide? I have one side that is darker or M5 10.8, not a pro version.
Should I try to replace it? It does not bother me much and I read here that there are more units, that come with more darker sides/edges.
Click to expand...
Click to collapse
The problem for me it's just a little and not worth a change for defect.
Because a repairing stores told me that quite always somewhere that little little darker side happear. It's not guarranteed that with a replacement it would not happear elsewhere. It's happening only with the White. Normal use the tablet is fine.
It's an issue of the IPS display, expecially large displays. That's Why i love the AMOLED all the way.
Technician said it's not for a change/repair, exept if it is gonna go worse.
So I'll keep it. Does your problem is so noticeable?
andreawars said:
The problem for me it's just a little and not worth a change for defect.
Because a repairing stores told me that quite always somewhere that little little darker side happear. It's not guarranteed that with a replacement it would not happear elsewhere. It's happening only with the White. Normal use the tablet is fine.
It's an issue of the IPS display, expecially large displays. That's Why i love the AMOLED all the way.
Technician said it's not for a change/repair, exept if it is gonna go worse.
So I'll keep it. Does your problem is so noticeable?
Click to expand...
Click to collapse
It is, the whole left side is darker, so I contacted for replacement. Amazon was very helpful and the replacement is coming to me. Hope that unit will be be without darker sides.
Thanks for help.
kaimyns said:
It is, the whole left side is darker, so I contacted for replacement. Amazon was very helpful and the replacement is coming to me. Hope that unit will be be without darker sides.
Thanks for help.
Click to expand...
Click to collapse
Did you had this issues also with other colors? If you were watching a movie or working on a picture was noticeable?
For me it's only the White, but you do have to look for it. It's same issues that have low/mid ranged TVs.
Not worth a change or a repair. Because it can ne elsewhere.
Does it is the same for you?
Keep us updated.
andreawars said:
Did you had this issues also with other colors? If you were watching a movie or working on a picture was noticeable?
For me it's only the White, but you do have to look for it. It's same issues that have low/mid ranged TVs.
Not worth a change or a repair. Because it can ne elsewhere.
Does it is the same for you?
Keep us updated.
Click to expand...
Click to collapse
Yes, there was also a problem with other brighter colors. It was noticable only when browsing, but that's mainly what I do with a tablet. After a while I started searching for that darker side in various apps/colors, instead of enjoying a tablet.
Today I got a replacement. The screen looks more or less fine on the sides/edges both with white and other colors.
my m5 pro 10.8 is perfectly in balance.
iv´e tested with a white fullscreen wallpaper on max. brightness. everything is ok.
also other colors are fine.
...
every M5 screen has it. I had 3 pieces, each one had a near the status bar (battery, hour) visible only at a sharp angle. If you do not see it, you look at it badly. I stayed with the first copy. These two still had dead pixels. This is the construction of ips.
yeah i have no issues on mine, full brightness and looking from sharp angles doesn't make much difference at all. Slight brightness changes maybe, but same happens to any screen.

Uneven black levels

Anyone else having this issue? When I switch to the dark mode it's obvious the black level from one corner to the other is not the same.
A black saturation test clearly shows the bottom row visible when the device is rotated one way and then not visible the other way.
Anyone else getting this? I'm going to ask for a replacement.
Jup i have the same
pclord99 said:
Jup i have the same
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Click to collapse
Damn, that's almost exactly the same.
I just got a full refund for mine as the shop I bought it from had no stock for a replacement. Another one on the way from another retailer, hoping the display is in better shape.
The quality control on these appears to be a bit crap.
OneUI uses dark grey on the Tab S and Note10... There are many, if not infinite variations of grey that approach black. I do art, so it's easy to notice that #000000 was substituted.
SD_black is black, OneUI simply has a dark mode. Also black cannot be uneven on OLED, because black refers to an off state.
Ace42 said:
OneUI uses dark grey on the Tab S and Note10... There are many, if not infinite variations of grey that approach black. I do art, so it's easy to notice that #000000 was substituted.
SD_black is black, OneUI simply has a dark mode. Also black cannot be uneven on OLED, because black refers to an off state.
Click to expand...
Click to collapse
You're just splitting hairs.
Black can appear uneven on defective OLED displays. If you use a black saturation or black clipping test you can clearly see with the tablet or phone rotated one way that the bottom row is barely visible (which is normal), but rotate it another way and suddenly they're all clearly visible, they're only visible because that part of display is defective.
I have OneUI on my phone as well, there is no visible banding and black/gray levels (whatever you want to call them) are uniform. If you're seeing any variation then you got a bad display and you should get it replaced.
Similar here. But mainly noticeable in very low brightness especially with night mode on
With which app do you test it?
LaCereb said:
With which app do you test it?
Click to expand...
Click to collapse
Display tester, first match on the play store. Find the black saturation test
Or you can use something like the below, loads of similar tests available on the Play Store or online.
https://www.avforums.com/threads/ho...el-on-oled.2204710/#lg=thread-2204710&slide=0
Replacement arrived today and it's even worse than the first one, instead of one corner it's right down the centre of the display.
Also found an easier way to highlight the issue, using the image tester select the burn in test and move all the sliders to the left, this should give you black. Then slowly move the green slider over, you'll notice some parts of the display become green when the rest remains black, at least up-to a certain point. Took the image below in good lighting.
The Amoled lottery. I had to go through many returns before I got a Tab S3 that didn't have unacceptable display uniformity and things don't seem to have improved a lot since then.
I guess that it's cheaper for Samsung to deal with the returns of customers who notice and care about this than simply having better quality control in the first place. Reviewers of course get cherry-picked samples so the quality of the display can be praised to high heaven.
Really makes me think twice about even considering upgrading though...
same here, You say they change it under warranty?
https://forum.xda-developers.com/attachment.php?attachmentid=4856027&stc=1&d=1572041670
https://forum.xda-developers.com/attachment.php?attachmentid=4856029&stc=1&d=1572041670
zsolti256 said:
same here, You say they change it under warranty?
https://forum.xda-developers.com/attachment.php?attachmentid=4856027&stc=1&d=1572041670
https://forum.xda-developers.com/attachment.php?attachmentid=4856029&stc=1&d=1572041670
Click to expand...
Click to collapse
Is your display like that for every image with that gray scale? Or is it just elements of the UI settings, dialer, contacts etc when you have dark mode enabled?
zsolti256 said:
same here, You say they change it under warranty?
https://forum.xda-developers.com/attachment.php?attachmentid=4856027&stc=1&d=1572041670
https://forum.xda-developers.com/attachment.php?attachmentid=4856029&stc=1&d=1572041670
Click to expand...
Click to collapse
I'm doing this through Amazon,
I did call Samsung support hoping to speak with someone and they basically just said take it to a Samsung store, I'd rather not waste time with that, they'll just pretend they've never seen the issue before and send me back to retalier for a replacement.
zetsumeikuro said:
Is your display like that for every image with that gray scale? Or is it just elements of the UI settings, dialer, contacts etc when you have dark mode enabled?
Click to expand...
Click to collapse
you can even see it on on xda black theme.
But since this is a common issue maybe manufacturing level, I rather leave it like this, because I do not want to end up with an even worse one.
Shocky2 said:
Anyone else having this issue? When I switch to the dark mode it's obvious the black level from one corner to the other is not the same.
A black saturation test clearly shows the bottom row visible when the device is rotated one way and then not visible the other way.
Anyone else getting this? I'm going to ask for a replacement.
Click to expand...
Click to collapse
hi
hours ago i found that when a blank tab is opened in samsung internet (i am using dark mode in system as well as the samsung browser) i could see the uneven black on the screen. i tried to rotate it but still the uneven black was there on the left and right hand sides in landscape mode, and on the top and bottom after i rotated it. so it should not be the ui or one ui problem
i remembered i have read this post so i revisit it and found many of you have the same problem. when i bought this tablet i have check via *#0*# to see how the black was and it's perfect. i also checked with *#0*# before replying to this post and the black was perfect too!
i am too wondering what could be the problem. i think it could be the dark mode which does not use true black (pixel off) in fact
ykkfive said:
hi
hours ago i found that when a blank tab is opened in samsung internet (i am using dark mode in system as well as the samsung browser) i could see the uneven black on the screen. i tried to rotate it but still the uneven black was there on the left and right hand sides in landscape mode, and on the top and bottom after i rotated it. so it should not be the ui or one ui problem
i remembered i have read this post so i revisit it and found many of you have the same problem. when i bought this tablet i have check via *#0*# to see how the black was and it's perfect. i also checked with *#0*# before replying to this post and the black was perfect too!
i am too wondering what could be the problem. i think it could be the dark mode which does not use true black (pixel off) in fact
Click to expand...
Click to collapse
Yeah, It's not the dark mode, this issue effects everything.
If it was just One UI I could ignore it, but sadly it's not. Essentially you have different parts of the display clipping at different black levels, even the sections that are relatively good still look patchy.
Samsung screwed us all but it's OK because it's not a popular product so nobody cares, prime example of how useless reviewers are as well because none of them picked up on it, cherry picked parts from Samsung probably.
Shocky2 said:
Yeah, It's not the dark mode, this issue effects everything.
If it was just One UI I could ignore it, but sadly it's not. Essentially you have different parts of the display clipping at different black levels, even the sections that are relatively good still look patchy.
Samsung screwed us all but it's OK because it's not a popular product so nobody cares, prime example of how useless reviewers are as well because none of them picked up on it, cherry picked parts from Samsung probably.
Click to expand...
Click to collapse
tbh, i cant live with it IF it affects my daily usage... but so far, it's acceptable
i will try to fix that once i rooted this tablet, just a matter of time

Question Do you have this display issue/defect?

Hi all!
Shown is an unfortunate issue I've had with the displays of two 1 IV's (US/512Gb models):
(just uploaded this as of posting so the higher res may still be encoding)
I use my phone frequently at night and the display is noticeably off/blown out/seemingly defective at lower brightnesses, especially in the evening. I've already been through the exchange process once for this problem and it took weeks, luckily I caught it in the return window. Now I'm deciding whether to try yet another exchange or just return the new one, because sadly this issue is a deal breaker for me.
Please let me know if you're experiencing the same issue so I can determine whether or not I want to gamble my time with another one of these, as I strongly suspect/fear this could be a widespread hardware defect that has gone relatively unnoticed. Either that, or I got two phones from a clearly bad batch.
Link to image shown in video if you'd like to see if yours has the issue.
You can see the problem best in scenes with very dark color gradients, mostly in the very black range. Most of the time it's not exactly easy to notice especially if you're not looking for it. The display looks flawless and brilliant at 90% and above, although interestingly "creative mode" also seems to degrade color quality. I had an Xperia 1 II before this and creative mode didn't have that perceived negative effect at all. In fact I had exactly 0 of these issues on my mark II.
60/120fps, HDR, etc all don't seem to change the issue, nor did a factory reset or the Xperia Companion app as suggested by Sony. I'm going to escalate me case with them tomorrow to see if I can get any more info. Found another thread about the issue/similar issues.
Sorry about the novel. I'm kinda sad about this whole thing because I otherwise absolutely love the phone.
Yup everybody has this issue. I'm convinced people who say they don't have it are just too blind to notice. I've not seen any video of a 1IV that shows a screen that doesn't have the issue. I always just keep my screen at 90% brightness and just the "Extra dim" quick toggle to make it less bright. If I'm in bed on my phone I use OLED Saver to make it even darker.
Well, I can't see that on mine.
Maybe not the best example, but this is a picture I took this summer, one is at max brightness and the other one is at some 60%. Tried with some other darker photos I have and no traces of that green tint.
Also, my phone switches to dark theme at night and with automatic brightness it certainly goes way below 90% and still everything looks black. Or at least not that obviously green.
...You realise that's not how a screenshot works, right?
Yeah, was just an example photo. But cannot reproduce that. Found topic on reddit, gonna try some HDR stuff but have to say that if that's what triggers it than will certainly never have the problem with it.
Just borrow a mate's phone and film your screen while you adjust the brightness above and below 90%. The difference is very obvious.
Then it should be obvious to my eyes also, like in his video. And that does not happening on the above photo. Anyway, gong back home tomorrow so will play with it a bit more.
No issues on my rooted device.

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