Develop Bugs

AMOLED and Themes - important note

Important to all theme developers and users to read before making/downloading themes.
http://www.scribd.com/doc/42669045/4D-AMOLED-Presentation
Green is the best at 40K hours, Red is 25K and Blue is 12K hours = Conclusion that green themes is best of the best for AMOLED like Jumba's NeonGT was. Someone should save Jumbas theme who has skills to rebuild neonGT because it was almost complete green and very easy to eyes.

Nice info
It would be really useful for Theme developers/moders
Sent from my JVH_DeOdex~®Voodoo--I9000 using Tapa

Ok, the blue pixels have"only" 12k hours until the brightness will decrease to a certain value. Did you even took the time to calculate what 12k hours means for a phone with an average of 4 hours of screen on per day? ... The answer is .... about 10 years. I wonder how many amoled displays from today will still exists then.
Later edit: not to mention that the respective document is from 2008.

i'd say black is even better

Jossilint is right. I had a samsung wave before i bought galaxy s. Most icons were blue and white in top bar. After a couple of months you could see the shape of the icons in fullscreen mode, especially on blue or grey backgrounds.
So you can notice when blue led's are getting older.

AMOLEDs have improved a lot since that article was posted. Infact, the rated lifetime of the AMOLED pixels actually indicates the time after which the intensity of the light emitted will be degraded, but not totally gone dead. We know that Blue degrades faster, so if you happen to see the screen showing more of Green and Red and comparatively lesser blue, it would be a good time to get your screen replaced.
And coming to my personal preference, If I manage to use my phone for around 2 years or more and start seeing these issues, I would definitely pay for a new screen. Just because I love the screen..

i think most people will never notice decreased brightness of blue oleds. only in top bar, when you use the same blue or white icons at same position over months. even then it is only slightly visible, but it is.
i'm not the only one reporting it. i've seen a couple of wave users in forums with similar effects. and wave is using exactly the same display, only size is smaller.

Nice info !
Thanks for sharing

here's the proof:
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Black Android all the way hahahah

pele78 said:
Black Android all the way hahahah
Click to expand...
Click to collapse
Yes but not with greywhite text (rgb all in use) but with green or red green mixed. I have readed lot of xda SGS burn in horror stories even after couple month(i assume max brightness used) and i am sure that this degraded light was blue.

I think you guys are overreacting. You'll end by NOT using your phone because you will always look not to burn the display. You'll NOT enjoy the beautiful colors and teh extraordinary contrast because of the same reason.
WTF? ... we are talking about a device that was built to entertain us, not to spend neurons in figuring out how not to do things with it.
Just my 2 cents.

ro_explorer said:
I think you guys are overreacting. You'll end by NOT using your phone because you will always look not to burn the display. You'll NOT enjoy the beautiful colors and teh extraordinary contrast because of the same reason.
WTF? ... we are talking about a device that was built to entertain us, not to spend neurons in figuring out how not to do things with it.
Just my 2 cents.
Click to expand...
Click to collapse
You can enjoy, just change habits a bit like not giving max brightness in sun(just use better angle and medium is ok). SGS is not meant for hours of navigation in car this will kill most fastest, use TomTom or some other lcd based phone, SGS is good for quick navigation. SGS is perfect for darkness because AMOLED has no light leak like lcd and has best colors.

SGS is good to be used with whatever application you want and in any way you want. To change habits because I have an AMOLED display will mean to change habits because of a device instead of changing a device because of my habits.
Is like the old saying: "are you living to eat or are you eating to live?" Everything is a matter of perspective.
I consider myself more important than a device ... so I'll use that device to my satisfaction, not the other way around.
So please ... use the SGS to enjoy what you're doing. When the SGS will die (no matter if is the screen, the battery or whatever) you can always get a new one .

[Q] Would this qualify as defective?

My screen shows banding on screens with gradients, like the call log screen, or screens with certain colors, like when I'm playing wordfeud. Even when I'm browsing the white background has faint horizontal and vertical lines.
All of this is only visible when on the lowest brightness setting. So when I'm browsing in bed at night etc it's really annoying.
I went to the (3) store here in denmark, but because it was a well lit room, the problem was barely visible and they said they'd have to send it in for "assesment", and best if i could come back in January and send it in (for 2-3 weeks). I'm just afraid they'll just return it with "problem not found"
I DID manage to report the problem to them on the 14th day after i bought it, their own DOA limit, but I've got a feeling I'm going to get screwed. Especially because the in store phone ALSO seemed to show the same color banding on the call log background.
I've tried taking some pictures that maximize the problem here: http://imgur.com/a/CbKYi#9
Are you guys seeing the same thing on any of your devices?
I love the phone to death otherwise, but it's like a scratch on a brand new car, it's annoying me a LOT.

unfortunately, that's just how they all are. has to do with the display type. both of the nexus' i've had were the same way, as was the display unit in my local verizon store.

vman81 said:
Even when I'm browsing the white background has faint horizontal and vertical lines.
All of this is only visible when on the lowest brightness setting. So when I'm browsing in bed at night etc it's really annoying.
Click to expand...
Click to collapse
You aren't seeing "banding" in the traditional screwed up screen sense, you're seeing the back of the display. I think it's just part of being SAMOLED and Pentile. I never noticed it until I started reading all the threads about people complaining over "banding" (and I don't think you're complaining LOL ).
Bump it up from the dimmest setting just a bit and most of it will go away. Our dimmest setting is REALLY good, at least compared to my old SGS. I also like how are screens don't have that SGS SAMOLED blue tint to them.

KWKSLVR said:
You aren't seeing "banding" in the traditional screwed up screen sense, you're seeing the back of the display. I think it's just part of being SAMOLED and Pentile. I never noticed it until I started reading all the threads about people complaining over "banding" (and I don't think you're complaining LOL ).
Click to expand...
Click to collapse
This image clearly shows banding and not the grainy display BG:
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go to that call log screen again and press vol down + power. then look at the screen shot on the computer.
it looks the same
the background is ment to look like that

All 4 phones and 7 models that I've gotten to use from Samsung have this problem.
SAMOLED just isn't very good yet.
Sent from my SGH-I897

happy to hear my phone is not defective, but then again im very disappointed that this is a quality issue with the phone.
I read tons off aritcles discussing the difference between Super AMOLED and Super AMOLED plus (pentile and RGB) and this forum probably did the best job of explaining it
now is this also the reason why whites arent really white while having hte phone in auto brighntess? is the screen is dim, my "people" app is not white, actually far from it. but when the brightness is maxed out it looks magnificent

danibravo said:
happy to hear my phone is not defective, but then again im very disappointed that this is a quality issue with the phone.
I read tons off aritcles discussing the difference between Super AMOLED and Super AMOLED plus (pentile and RGB) and this forum probably did the best job of explaining it
now is this also the reason why whites arent really white while having hte phone in auto brighntess? is the screen is dim, my "people" app is not white, actually far from it. but when the brightness is maxed out it looks magnificent
Click to expand...
Click to collapse
I was disappointed by the screen quality at first too, but the more I use the phone the less I notice it. I've even started to really like other aspects of the display that were lacking in other phones with a "clean" screen. Colors are much more vibrant for one, this is very visible when watching videos on the phone when I'm at the gym.

DARK vs LIGHT Theme Battery Stats on SAMOLED

As most of us already know, Samsung's SAMOLED displays are more efficient than LED-backlit LCD displays (HTC One X, Moto Razor, etc), because backlit displays are always on even when showing a black image (no local dimming yet?), whereas AMOLED only uses energy when individual pixels actually need to emit light. What I didn't know until today, though, is precisely how much battery you could save with AMOLED by using dark-themes instead of bright light-themes & wallpapers, etc. I had assumed the difference was in the low single-digit percentage range, and I assumed wrong
I simply timed how long it took the battery to drain 5% with the screen always on at various brightness levels and while viewing an all white or all black 720p image fullscreen in QuickPic. All tests were performed on a freshly-rebooted AT&T SGS3 running CM10 Nightly (20120911) with a 2.5-month old stock battery. 4G, WiFi, & sync were enabled. No CPU hogs were running.
I used the following to log the phone's battery level every 10 seconds via adb over wireless. (If I were to do this over again, I'd instead spend a few hours writing a simple app to automate the process for hands-free accuracy, instead of doing it manually):
Code:
$ while true; do printf "%s\t%s\n" "$(adb shell dumpsys battery|grep level|awk '{print $2}')" "$(date)"; sleep 10; done
98 Mon Sep 11 15:59:30 EDT 2012
CONCLUSION:
In the best-case scenario, a SGS3 with its SAMOLED display showing dark content instead of light content gains about an extra 3 hours of screen-on battery time, no matter what your brightness is set to. A backlit LCD display would show no difference. So, in order to squeeze a couple more hours out of your battery, it's smart to use DARK wallpapers, DARK ROM themes, DARK App settings, and DARK-themed Google Apps (like JustinBean's Inverted GAPPS package :highfive: )
And here's a screenshot my spreadsheet just so you can see the data:
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Experiment over. HTH.
Feel free to verify my results yourself...

zmore said:
As most of us already know, Samsung's SAMOLED displays are more efficient than LED-backlit LCD displays (HTC One X, Moto Razor, etc), because backlit displays are always on even when showing a black image (no local dimming yet?), whereas AMOLED only uses energy when individual pixels actually need to emit light. What I didn't know until today, though, is precisely how much battery you could save with AMOLED by using dark-themes instead of bright light-themes & wallpapers, etc.
Click to expand...
Click to collapse
Your first sentence I bolded is probably not true.
See:
http://www.anandtech.com/show/6022/samsung-galaxy-s-iii-review-att-and-tmobile-usa-variants/3 - One X with 4.7" LCD and smaller battery capacity lasts longer than Galaxy S III 4.8" SAMOLED with larger battery capacity in an internet test that is constrained by the power drain of the screens.

Milk Tea said:
Your first sentence I bolded is probably not true.
See:
http://www.anandtech.com/show/6022/samsung-galaxy-s-iii-review-att-and-tmobile-usa-variants/3 - One X with 4.7" LCD and smaller battery capacity lasts longer than Galaxy S III 4.8" SAMOLED with larger battery capacity in an internet test that is constrained by the power drain of the screens.
Click to expand...
Click to collapse
Here I was testing apples to apples by only changing ONE variable at a time on the same device, and not apples to oranges (different CPU & h/w components, different Android OS, amount of RAM, etc...).

Cool scientific research! Write a paper on it! Yay!
---------- Post added at 11:19 AM ---------- Previous post was at 11:17 AM ----------
Browser test should be done in dark Opera browser. There is usercss.css file available which makes Opera dark. Anandtech tests stock nonmodified phones - so it suxxx.

very interesting information.
i've used devices with lcd screen and the gs3 is my first amoled screen. my impression was that i noticed the display wasn't always the number 1 battery drainer on my old atrix like it is on my gs3. even though oled based screens don't use as much battery to display blacks, during average screen usage most apps use lighter colors apposed to darker colors so this really can't be taken to its full advantage. fortunately there are some apps that i use very often like tapatalk where you can apply a dark theme and save some juice.
mabey in the future as oled screens become more popular, mobile developers will take advantage of darker themes.

Nice I added this to my op
Sent from my SGH-I747 using Tapatalk 2

Thanks for the information...

Awesome post man. Makes total sense and nice to see data on this subject. Cheers!

Color saturation & accuracy

If you're colorblind, please disregard this thread. Rate this thread to express how you deem the color saturation and accuracy of the Honor 8's display. A higher rating indicates that you think that color accuracy is very high and saturation is excellent.
Then, drop a comment if you have anything to add!

Accurate? Nop. The display is way to cold by default. Even on the warm mode I can see a bit bluish. The display need some tweaking. Get it right honor!asap!

well saturated display, wish it was amoled

I haven't received mine yet, but the Anandtech review highlights the display as one of the weakest areas:
CCT: 8919K (should be 6500K, far too blue)
Average ΔE2000 greyscale: 8.82 (this is colour accuracy, and lower is better - this is one of the worst of any phone)
The red and green points are wide gamut, but the blue is short of sRGB.
They have more numbers, but needless to say the LCD panel is extremely poorly calibrated, and they claim that none of the colour calibration settings make anything better. I'm hoping in real life, it isn't as bothersome as in theory.
Can anyone who has theirs comment as to these specific concerns, because they're what's worrying me most...

It's rubbish really. Good contrast but nothing about it is correct.
*Gamma ranges from 1.2 in the midtones to 1.8 in the shadows, and just today I noticed it gets even worse if the ambient light sensor detects very bright conditions (gamma is made even worse to increase midtone brightness).
*Black level is 7 or 8 RGB levels too low.
*Color temperature is very blue and the color temperature setting provided does almost nothing, the range is too small.
No way to correct any of the above. Photographers and graphic artists should stay away from this phone.

dagbro said:
It's rubbish really. Good contrast but nothing about it is correct.
*Gamma ranges from 1.2 in the midtones to 1.8 in the shadows, and just today I noticed it gets even worse if the ambient light sensor detects very bright conditions (gamma is made even worse to increase midtone brightness).
*Black level is 7 or 8 RGB levels too low.
*Color temperature is very blue and the color temperature setting provided does almost nothing, the range is too small.
No way to correct any of the above. Photographers and graphic artists should stay away from this phone.
Click to expand...
Click to collapse
This has me concerned, I was seeing the Honor 8 as my move back to Android (on an iPhone SE now bought in anger at the Nexus 5X's unbearable slowness), but it may not be. I couldn't resist $260... I won't actually get it until just before Christmas as I'm not in the US, it's being shipped to a friend.
Are there any third party tools that could fix this, or any hope of better calibration coming in EMUI 5? It seems like the LCD should be good, and it is a purely software issue...

Waiting to receive mine so I can rate in all of this threads.

I really like this phone. Is there any way to recalibrate the screen?

raju0101 said:
I really like this phone. Is there any way to recalibrate the screen?
Click to expand...
Click to collapse
We are working on it.
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XePeleato said:
We are working on it.
Click to expand...
Click to collapse
Nice! Guessing this will require root? I'm holding off on rooting until custom ROMs become usable.

XePeleato said:
We are working on it.
Click to expand...
Click to collapse
Damn I have been waiting for this!
Is this emui built in display color calibration for feature firmware? MM or coming in nougat update?

XenithV said:
Damn I have been waiting for this!
Is this emui built in display color calibration for feature firmware? MM or coming in nougat update?
Click to expand...
Click to collapse
This has nothing to do with EMUI, it's not being developed by Honor.
timwelter said:
Nice! Guessing this will require root? I'm holding off on rooting until custom ROMs become usable.
Click to expand...
Click to collapse
Yes root access is required.

dagbro said:
It's rubbish really. Good contrast but nothing about it is correct.
*Gamma ranges from 1.2 in the midtones to 1.8 in the shadows, and just today I noticed it gets even worse if the ambient light sensor detects very bright conditions (gamma is made even worse to increase midtone brightness).
*Black level is 7 or 8 RGB levels too low.
*Color temperature is very blue and the color temperature setting provided does almost nothing, the range is too small.
No way to correct any of the above. Photographers and graphic artists should stay away from this phone.
Click to expand...
Click to collapse
Settings -> Developer tools -> Increase readability under sunlight to Off will probably fix the second part of the Gamma issue.

32 vs 64GB
Colors seems to be dependent on what device u have. Or maybe on what type of display is build in.
Actually i own two Honor 8, first one in blue with 32GB (since September) and the Premium version with 64GB in gold.
The 32 GB has a dark screen with blueish tint while the 64GB Premium version is the one that deserves his name. Rich colors with a nice touch of almost good balance in saturation. Should not be but it is so.

BBEN66 said:
Colors seems to be dependent on what device u have. Or maybe on what type of display is build in.
Actually i own two Honor 8, first one in blue with 32GB (since September) and the Premium version with 64GB in gold.
The 32 GB has a dark screen with blueish tint while the 64GB Premium version is the one that deserves his name. Rich colors with a nice touch of almost good balance in saturation. Should not be but it is so.
Click to expand...
Click to collapse
thats weired, so they are giving different lcd panels for different storage models??

I haven't heard anyone else mention it, so it could be a one off? I have heard of lines of phones shipping with the screens all calibrated (or not calibrated I guess) so that some ship with definite shifts in color so some units arrive with yellow, blue, pink, or green tinges to the screen.
In any case I would like it if Huawei had an sRGB mode option available.

evilpaul13 said:
I haven't heard anyone else mention it, so it could be a one off? I have heard of lines of phones shipping with the screens all calibrated (or not calibrated I guess) so that some ship with definite shifts in color so some units arrive with yellow, blue, pink, or green tinges to the screen.
In any case I would like it if Huawei had an sRGB mode option available.
Click to expand...
Click to collapse
Hope Huawei provides SRGB mode

rajeshkapa said:
Hope Huawei provides SRGB mode
Click to expand...
Click to collapse
This would be hard to provide given it doesn't sound like any calibration has taken place (given the reports of different panels). Reminds me of the Nexus 5... had three different Nexus 5s with different colour balance - one VERY different (warm and almost incandescent like, vs the very cool of the other two - one greenish and one purpleish).
You can't take a phone that hasn't been calibrated and go back and offer calibration... the screens need calibrated before they leave the factory, then you can offer calibrated modes. The best Huawei could offer us, really, is a gamut restriction (since the gamut is more or less a known) and RGB adjustment sliders.
They should offer at least the latter...

Agree
XenithV said:
Accurate? Nop. The display is way to cold by default. Even on the warm mode I can see a bit bluish. The display need some tweaking. Get it right honor!asap!
Click to expand...
Click to collapse
Yes, indeed, had this on my 32GB version too.

Image
Here´s a (quick) comparison of my both Honor 8 (Gold = 64GB / Blue = 32GB).
Both set to Auto Brightness and both with same color temp.

Question edge bleeding at low brightness

Hello, tonight i was configuring my youtube app and i noticed very bad colors at the edge of the display, when the background is grey. I was in a complete dark room, the problem is most noticable when brightness is about 15%. And no, its not only the app. The bad colors are visible at a brightness from 0% to 50%.
Do you guys also have this problem?
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Cryptonizer said:
Hello, tonight i was configuring my youtube app and i noticed very bad colors at the edge of the display, when the background is grey. I was in a complete dark room, the problem is most noticable when brightness is about 15%. And no, its not only the app. The bad colors are visible at a brightness from 0% to 50%.
Do you guys also have this problem?
View attachment 5275759
Click to expand...
Click to collapse
The Mi 8 has it also, that is screen uniformity. It is hardware and it seems very common the last few years. I don't have it on my Oneplus 7 pro but it is also present on the Oneplus 8, Xiaomi Mi 9 etc.
Some folks say it is normal on oled but it isn't.
Why are the no problems with oled on Oneplus 7 pro, Samsung s10+?

I have same in low brightness don't worry.

basongwe said:
I have same in low brightness don't worry.
Click to expand...
Click to collapse
LOL, send the device back it is not normal. Don't pay for broken hardware.

bassbounce said:
LOL, send the device back it is not normal. Don't pay for broken hardware.
Click to expand...
Click to collapse
so your unit doesnt have this issue?

i have the same problem,always visible when you have a dark(not black) background,note i had before 1 samsung s2,s4,a5 (the a5 when i was watching a movie in dark scene i could see a yellow brightness in one corner,it was awfull)and a tablet from the same manufacturer and all had the same probleme but at different level,my last Mi9t was parfect and screen didnt show that but my new F3 has it ,one side is clearer than the other one

As far as I know it is because of the AMOLED manufacturing tolerances, it seems to be really hard to get a perfect uniform display.
It shows at low brightness with grey screen especially.
Discussion also happend with the Mi 8 here:
https://forum.xda-developers.com/t/...moled-uniformity-issues-etc-for-mi-8.3843180/

Lol, I was just about to start a topic about this when I saw yours. Only dark gray backgrounds and top left is brighter then bottom right. Disappears at about 25% brightness. On the photo it seems green but not to the eye...
So if I send the phone back I'll most likely receive a new one with the same issue?

PatricB said:
Lol, I was just about to start a topic about this when I saw yours. Only dark gray backgrounds and top left is brighter then bottom right. Disappears at about 25% brightness. On the photo it seems green but not to the eye...
So if I send the phone back I'll most likely receive a new one with the same issue?
Click to expand...
Click to collapse
you have a chance to get another F3 with same issue or less visible or worse

PatricB said:
Lol, I was just about to start a topic about this when I saw yours. Only dark gray backgrounds and top left is brighter then bottom right. Disappears at about 25% brightness. On the photo it seems green but not to the eye...
So if I send the phone back I'll most likely receive a new one with the same issue?
Click to expand...
Click to collapse
Lol, as u can see, my issue is in the same area, but mirrored.
I think, if u send the phone back, maybe u will get one with the same issue on diffrent corners. Only if u r lucky, u will get a good screen but then maybe the vibration motor starts crackling xD
I will keep my phone, cuz everything is fine for now

Well, yes, I'm a nitpicker really and there's always a small problem with a device it seems. I can't find anything else so I guess I'll settle for a small uniformaty of the screen. After all it's only with gray and in a dark surrounding. When watching a dark scene in a movie in inperceptable and maybe I can switch more elements to black using a custom rom (hope lineageOS will show up).
And maybe when there's a way to do DC dinning and not PWM it'll be better....

PatricB said:
Well, yes, I'm a nitpicker really and there's always a small problem with a device it seems. I can't find anything else so I guess I'll settle for a small uniformaty of the screen. After all it's only with gray and in a dark surrounding. When watching a dark scene in a movie in inperceptable and maybe I can switch more elements to black using a custom rom (hope lineageOS will show up).
And maybe when there's a way to do DC dinning and not PWM it'll be better....
Click to expand...
Click to collapse
It is in general really hard to get a perfect display, be it on phones or on PC monitors.
Also TN and IPS panels show their weaknesses at "grey" colors, it makes the uniformity visible to the human eye.
Additionally trails and overshoot of moving objects on a grey background are most noticeable.
Not sure why "grey" is so devastating

I don't know. I'm from NL and here we have a lot of "grey areas" so guess I'll have to get used to it

Mine has a similar grey gradient visible at low brightness and solid colors, but it doesn't seem to be discernible in anything but settings. My old phone has a "perfect" oled though, so it's definitely possible.

Solid colors seems fine, or my eyes don't perceive it...
Probably the same case as processor cores: bins. Maybe they pay less for getting screens that are not 100% uniform?