Develop Bugs

Screen streaking/unevenness?

I haven't seen this mentioned anywhere else. Does your ET show (mostly) vertical streaking/unevenness when displaying a solid, light color? Is this something related to AMOLED, or is my ET defective?
Edit: I just realized this is dependent on screen brightness...the streaks are only apparent at the lowest brightnesses.
Thanks.

Screenshots would help others see what you're referring to.
Sent on the run.

I get this when my screen goes off and on
Sent from my SPH-D710 using XDA App

I have to mention that the first one i had, was like this, but it showed like a dark spot in the center of the screen, btw screenshots wouldn't show this problem because is actually the hardware" Screen" In this case.
So i went ahead and brought it to the Sprint Store where i bought it from, and asked for a replacement due to the Screen hardware defect, they kept *****ing at me telling me, that they have to keep it for a whole day, to do "Tests" Im like... well its a hardware issue and i have taken the phone and hardreset it, making the phone as if just out of the box, and showed them the problem again"btw the phone comes with a Gray and Green pure colored background images that you can show to them, that it isn't an Image that you had Altered" , and they can see that it is the screen, and its what i showed to them, and thats when i got my replacement, When i got this one, i saw it again, and it had a white spot... also had various streaks coming from the Top of the screen, went int he second day and got me another replacement, but before i left the store, i stayed about 30 minutes in there, testing the phone out, and downloading all the apps that i had in the phone before. Also Good way to notice this problems( defects ) is dimming the screen all the way, and changing the background to gray, which is a default wallpaper.
This screen didn't have any of the defects that previous ones had, so im a happy camper .
So now what i'd recomend if you can, is replacing/exchanging the phone until you get one with a decent screen.

I get this too when my brightness is turned down. It's most visible on grays. Like the background of the market. It only appears when the brightness is turned down low. There is also this app in the market called "screen test" which cycles through different solid and colored backgrounds. that if you did take it in you could show them that. This issue doesnt really bother me but I have TEP plus there is a one year manufactures warranty so if it gets worse I'm not worried about it.

I finally got around to taking a quick set of comparison pictures. Sorry for the poor quality, I took them quickly with my phone. I also tried to purposely take them out of focus, so moire patterns from the actual pixel grid wouldn't confuse things. I have a feeling this is how all *LED based displays are.
I use the app "Colors" to quickly get a solid patch of color. I encourage a few people to download it, and browse through a few colors (grayish or dark tones - light or bright colors aren't affected as much) and see if they have it. "Grr-ey", "Mighty Slate", "Kind Giant" are good ones to test with.
Things are much more noticeable when the brightness is set low.
Brightness manually set to minimum:
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Brightness manually set to maximum (streaks almost entirely gone):

ranchosteve said:
I get this when my screen goes off and on
Sent from my SPH-D710 using XDA App
Click to expand...
Click to collapse
same, i get white vertical streaks at times when i turn the phone on / off..
i exchanged the phone for another one, same issue, less frequent tho

ffolkes said:
I have a feeling this is how all *LED based displays are.
Click to expand...
Click to collapse
You may be right my screen has the same effect :-(
Sent from my Galaxy SII using XDA App.

Strange screen issue

I've found something odd with my screen, and although I intend to do an exchange on my S3 I figured I'd share it here to see if anyone else has seen it too.
What it seems to be is that a couple chunks of pixels go entirely black when their section of the screen calls for being black, while the rest don't. I'll try to show you what I mean:
This is a shot of my screen, running a screen test app on an all-black image. It's extremely hard to get a picture of a dark screen in a dark room with a cheap point-and-shoot, and you'll have to ignore the stuck pixels on the camera's CCD, but the red arrows point you to the bits in question (I've also turned the contrast all the way down, and brightness all the way up, in photoshop because otherwise the spots weren't very clear... and still aren't in focus... but in person these are easily visible as two dark spots in an otherwise gray background when you look at the screen in a dark place). You'll want to view it at full size, and again I'm sorry the image is so blurry but viewed in person the "blobs" in the image are in fact crisp edged vaguely tetris-block-shaped pieces of total blackness surrounded by dark gray.
For comparison this is my girlfriend's Sprint S3 screen shot with the same camera under the same conditions and with the same photoshop effect applied.
If you want to see if yours does the same thing, download "Screen Test" from the market, turn the screen's brightness up all the way, change it to the black screen (the second testing screen), then go into a totally dark room. You may have to look just off to the side of the device to see them at first, but once you've done that and seen the spots you can't un-see them.
Lest you think I'm being overly picky (although I would argue any defect in a device I paid $550+tax for is one defect too many) it IS possible to notice this even under normal usage conditions. I kept seeing a spot on the Facebook app every time I would reload a page, and every time I thought a piece of something had gotten onto the screen, but before I could wipe it away it had disappeared. It may be a minor annoyance, but it really bugs me, so I'm going to exchange it. I figured I'd document it before I did, though, just in case anyone else had seen the same things.

A lot of people have this issue, including me. But since I literally never see it unless I'm using Screen Filter at a low percentage, it's not much of a bother.

The only time I see it is when i play draw something.

Screen blobs....
They have plagued Samsung screens for a while now.
The sad part is.. from my experience with the blobs, Even with a device that doesn't have them they eventually show up.
Found on the following
My s3
Galaxy note (over 6 tested)
Galaxy s2 (a few tested)
Galaxy s2 skyrocket (over 6 tested)
Even the galaxy note 2 I recently examined
They all have them
Sent from my SPH-L710 using xda app-developers app

Damn. Just checked my s3 and have a 1/8 inch line running down the right side of screen
Sent from my SPH-L710 using xda app-developers app

My search led me here! I myself noticed this tonight while I was watching Underworld Awakening in my bedroom with the lights off. I have a nice blotch on the center right and a few spots scattered throughout the screen. Looks like I will have to unroot and watch this out:/ what a pain.
Here is my screen shots may be hard to see from these pics.l but its definitely there.
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Sent from my SPH-L710 using xda app-developers app
EDIT: I decided its not that big of a deal. I don't watch a great deal of movies on my phone anyways. I mainly use my tf700t for stiffy like that

[Q] Yellowish tint near bottom of the screen

I just picked up a 2013 Nexus 7 this weekend as an upgrade for my 2012 model. Seems like a solid upgrade so far but I'm bothered by one item and it's the yellowish gradient toward the bottom one or two inches of the screen. I need to tilt the device maybe 15 degrees away from me to get a more consistent color. If I rotate the device 90 degrees counter-clockwise (camera now on the left), I can still see the yellowish darkening on light screens on the right. My 2012 model has consistent color throughout. I found a number of posts regarding people complaining of about a warmer color to the 2013 screen but haven't seen anything describing the gradient I see. It's rather annoying when reading webpages or ebooks with a light background.
Anyone else see this on their Nexus? Did it improve with time?
I tried to take a couple of photos but my camera doesn't seem to be doing a good job of picking up the colors.

Common issue
I returned mine (because of it) and got a new one which had exactly the same thing.
I also checked out a friend's N7 and had the same thing.
So I guess it is a normal thing. It is hardly noticeable and only on white background.
(Most panels have some kind of uniformity issues. I checked an iPad 3 and had some other issues...)

antypas said:
I returned mine (because of it) and got a new one which had exactly the same thing.
I also checked out a friend's N7 and had the same thing.
So I guess it is a normal thing. It is hardly noticeable and only on white background.
(Most panels have some kind of uniformity issues. I checked an iPad 3 and had some other issues...)
Click to expand...
Click to collapse
Thanks for the feedback. This is actually driving me nuts and I'm going to take it back to see if I can get one with at least less of the effect. Mine seems to be worse than the display model in the store I saw today. If they can't give me something that's equivalent in color consistency to my 2012 Nexus 7 then I'll return it and just stick with that.

If I were you I wouldn't bother.
In the store there are other ambient factors that may trick you in believing the store's sample is batter. But it will not.
3 samples I checked are exactly the same...

My device have yellow tint to. How to fix? "Screen adjuster" and other not helped for me.
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I don't believe that this is correctable with software. I ended up getting a different tablet altogether and even this 10" one has the same issue. Guessing these panels are all coming from the same manufacturer....

[Q] About those viewing angles...

Hi to all
I'm pretty new to the tablet market and I just bought the note 10.1 2014. I'm in my first 14 days where I can exchange/return my tablet and I want to make sure everything is ok with my stuff.
I've read countless online reviews before making my choice and, as you all know, one of the strongest aspect of the note 10.1 2014 is the display. Most if not everybody is praising the resolution, the colors, minimal color shifting, brightness and the viewing angles. Now, I want to make sure my understanding of lcd displays/viewing angles is good.
My tablet's display is gorgeous... when I look at it straight at it. I have the minimal light bleed on the edge which only shows on black and has 0 impact on colors which I'm ok with (all demos in stores are the same so...) As soon as I tilt the tablet though (vertically or horizontally), colors become very dull. Actually, colors do not shift but everything becomes dimmer/duller. Now, I suspect this is normal behavior from a backlit LCD but still, I keep reading reviews stating the display is gorgeous and bright even from an angle which is not 100% right for mine. I've tried to look at videos/pictures online but most people doing reviews actually setup a camera right in front of the tablet and barely move it once it's turned on so it's not helping me. So when you guys are saying the tablet's display stays vivid and colorful from every angle, are you getting the same kind of behavior my tablet has and are not talking about this because this is normal behavior for an LCD display or is my tablet's display defective?
Thank you very much in advance for your cooperation. If needed, I could take pictures.

Merranza said:
Now, I suspect this is normal behavior from a backlit LCD but still, I keep reading reviews stating the display is gorgeous and bright even from an angle which is not 100% right for mine.
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Click to collapse
As is typical of the Samsung displays, the viewing angle stability is great. The colors remain stable regardless of the viewing angle and we did not note any great loss in brightness.
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http://www.notebookcheck.net/Review-Samsung-Galaxy-Note-10-1-2014-Edition-Tablet.106669.0.html​

Thank you very much for your reply. Well, I guess my tablet's screen is pretty similar to the test unit provided in the review. My definition of stable brightness and colors is pretty different from the behavior of that display But to know my screen behaves normally compared to other tablets is good to know.

Just enjoy this tablet..Don't spend hours looking for problems that arent there. This tablet is wonderful , I have had mine since December with no issues at all. I'm rooted with tons of stuff on mine. Most of the problems I have been reading about are people with way too much time on their hands. Have a beer , and love your tablet!!
Sent from my SM-P600 using XDA Premium HD app

Don't get me wrong here, maybe I did put too much emphasis on the display and I'm sorry about this. I love my tablet too. I'm just discovering the power of the tablet and the S-Pen, the integration is pretty amazing.
Cheers

Does the nougat update fix the youtube lip sync issue?

Also does nougat allow you to calibrate the color of the screen?

Yes it fixes the sync. No unfortunately no calibration of screen just the regular two modes. I also want color control as I want to make my screen a little cooler. We can just hope for a custom kernel in the future that allows this. ElementalX dev has stated he won't make anything for the P2.

dannejanne said:
Yes it fixes the sync. No unfortunately no calibration of screen just the regular two modes. I also want color control as I want to make my screen a little cooler. We can just hope for a custom kernel in the future that allows this. ElementalX dev has stated he won't make anything for the P2.
Click to expand...
Click to collapse
Good to know the YouTube issue is fixed. God damn it I ****ing hate amoled screen, my screen has an annoying yellow tint, I might want to return it

linkzex said:
Good to know the YouTube issue is fixed. God damn it I ****ing hate amoled screen, my screen has an annoying yellow tint, I might want to return it
Click to expand...
Click to collapse
If mine would had been just a tad warmer I would have thought about doing the same. But in "vibrance" mode it's good enough (barely). I can stand it as the eye gets a little used to it.
There are ways to make it a little cooler anyway. Check the app Screen Balance. It will mess with your blacks but not very much if you keep the opacity <50%. It's a tradeoff but it can help.

dannejanne said:
If mine would had been just a tad warmer I would have thought about doing the same. But in "vibrance" mode it's good enough (barely). I can stand it as the eye gets a little used to it.
There are ways to make it a little cooler anyway. Check Screen Balance. It will mess with your blacks but not very much if you keep the opacity <50%. It's a tradeoff but it can help.
Click to expand...
Click to collapse
Actually that's what I've been using, it makes the black looks like dark blue...
The screen just isn't that good, not sure why so many people jump on the amoled bandwagon
LCD is more color accurate, no risk of burn in, the white looks so much better and the quality of LCD is always consistent unlike amoled which varies everytime.

linkzex said:
Actually that's what I've been using, it makes the black looks like dark blue...
The screen just isn't that good, not sure why so many people jump on the amoled bandwagon
LCD is more color accurate, no risk of burn in, the white looks so much better and the quality of LCD is always consistent unlike amoled which varies everytime.
Click to expand...
Click to collapse
I completely agree with you on every point. I'm an LCD person too for the same reasons.
Though I have to say I'm happy overall with this screen because of one reason, it's the most uniform screen I've ever had including all LCD phones I've had and they are a lot. My screen is pretty much perfect i never get this lucky certainly not with Amoled.
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Sent from my LG-H960 using Tapatalk

The sync issue is fixed and I don't have any problems with the screen. For many years everybody was loving the oversaturated amoled Samsung screens, but now there are opinions that some prefer lcd. Well it's a personal preference, lcd screens have bad black color and also drain more battery regardless what you're doing on your phone.