Blue patch appears on screen - Xperia Z2 Q&A, Help & Troubleshooting

So yesterday when I switched on my phone, I found a blue patch on the screen, it was very visible on blackish backgrounds but it can't be seen on whites. Although it doesn't affect the phone, it's kinda annoying, I've only had the phone for 6 months. It tends to disappear partially at times but comes back again. I still have it covered under warranty. Does anyone know what causes this? so I can get it fixed or on the worse case, getting a new screen? I've attached 2 photos, the first one is mine. sorry for the bad quality, the other is an Oppo phone with the exact same problem.

Its happened beacuse the high temperature.If is summer in your country thats explain much.I heard for that problem.If you did use much much even in outdoors the heat reflect on screen so some patch may persist on screen.
Use your warranty.

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Possible pixel problem on second Hero phone, help ;(

Yesterday i bought a HTC Hero (my first one). When i turned it on and toke a good look at the starting screen (the one that says Hero, and HTC), i found a white pixel, probably dead or something. I went back to the store to get a new phone. This was not a problem at all and i got a new Hero. Now again, when i turned on the phone and toke a good look at the black screen, i also found 2 pixels with a other wierd problem:
The pixels also turned out white when i looked at them in a specifica angle. Just to be clear, i am watching on a black screen (starting screen). If you look at the screen and not in a specific angle i cant spot the pixels directly, but when i tilt over the phone slightly they show up and are 2 little white dots.
After i found out i downloaded the Detect Dead Pixel app. This app can create a black screen, the same screen as the home screen. When i use this app to spot the pixels again they are way less visible than on the home screen... I can spot 1 of them a little bit if i look at the screen in a certain angle and i can see a little dot, but i cant see them that good as on the home screen. They are not visible on other colors, only black.
I really dont know what to do with the phone now ... does anyone know what this is? im a bit concerned. Thanks!
After a bit more research on my phone i firugred that the dots really arent that visible. Maybe its just dust under the screen? When i put on a black screen using some kind of Android app i can not spot them. If the pixel is lazy or dead it should be clearly visible on a black screen right? for the lazy one then.
Anyway, i spotted a other problem on a black screen:
A brighter spot on the top part of the screen (like someone is pressing on it a little bit). Is this a problem ? im deciding if i should return the phone again..
Well its entirely upto you mate - i dont know what contract you've taken out but you may have that phone for 2 years. If your not entirely happy with it i'd take it back while you still can.
Issues with the screens rarely correct themselves.
My first Hero had around 10 dead pixels and i got it replaced as i wasn't happy with it. I now have one with a perfect screen and i'm really happy with it!
Well i just returned to the store and got another phone. This is the 3th one, and it still has problems, even more then the previous ones ....
On the boot screen there are about 10 very very tiny white wierd points visible ... im getting a bit frustrated here. What is this with all the screen problems ? :S
looks like they got a bad batch in your shop... have you considered powering up the phone while you are still in the store? might save you same time and way...
kendong2 said:
looks like they got a bad batch in your shop... have you considered powering up the phone while you are still in the store? might save you same time and way...
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I have done that, but as i said, its only really visible in a dark room with screen brightness on 100%. I have checked the phone in the store and it just wasnt visible. When i checked the screen in a complete dark room i spotted the little things again. Looks more like dust to me =\
If your brightness is 100% you should see that one single pixel immediately.
Try making an image in paint (480*320) with a black background and a single white pixel. Open that image on your phone. The dead/lazy pixel should be just as bright as the one you drew.
Also the brighter spot is normal. It's called "backlight bleeding". Every lcd screen has this 'problem'.
They are not clearly visible, i think they are smaller then pixels, but they are countable on the bootup screen. When i tilt the screen them seem to change color (might just be dust). Green etc. I dont know what to think of it, come on. A wrong batch shouldn't be the problem if its dust, then its just a assamblation error. But 3 in a row?
I'm getting a bit pissed
It's dust or a fingerprint blocking a very small subpixel. Can't you just wipe it off? But I suspect very tiny scratches.
idk whether this is possible, but it might be dead subpixels. that would explain why they are smaller than a full pixel...
Does anyone know if that is possible? it sounds like a good explaination. Dead sub pixels could be the problem. They are smaller then pixels, but beg enough to be counted (i can count over 13). Little white dots on a 100% brightness black screen.
It must be dust, its a common question among hero owners. Most of the time the things they see is dust. It would be crazy if all new hero's have up to 10 or 13 dead pixels.
Ok well, here's what happened next:
I returned my phone again, god my cash back, bought a new one at a other store, SAME problem. Swapped it for a new one again, same problem!
Got my money back and i completely changed my mind of buying a Hero.
It is not dust. Its a perfect white dot, and definately some kind of pixel issue.
To bad..
Are you sure you're not being pixel-paranoid?
When reading all of this it sounds mostly like small dust particles under the screen. And looking at the number of phones you have tried, chances are you also got one with a real dead pixel (hot pixel, always on).
But I also think you are obsessed about it. My phone also have one dust thingy somewhere which I found just like you did (pixel tester, black screen). Smaller than pixel and less bright though.
I never notice the thing under normal use, unless I really go searching for it with a black background.
So you might make it bigger than it really is and miss out on a really nice phone.
Then again, we all have our own quality standards and its good yours is a high one!
I have had a tiny dead pizel since I bought my phone. Only really see it on the bootscreen.
I was always more bother by the light you can see coming from under the keys at the bottom and near where the lcd meets the keys.
I also have 3 dead pixels but they aren't that irritating.
I also discovered them when booting up the phone, but for me, they are sea blue (all three)
Maybe it is 2nd hand stuff HTC uses on their phones?
i have about 7 or 8 dead pixels too. it doesn't bother me too much anymore... only notice it in a completly dark room on the boot up screen... probably a common problem with the lcd screen the hero uses
All Hero's have this, or will have it inevitably:
The screen does not connect fully; there is a rubber-border between the glass and the metal frame surrounding the screen.
Look from the right angle, and you can see that there is a small 1/10th mm opening. Dust will come through here, and it will get on the screen.
HTC will wipe it off free of charge of course.
It is NOT a dead pixel; these can be seen from any angle, although the color changes a little but because of the viewing angle.
Call HTC and say you have dust under your screen, they will fix it for you, free of charge.

Hardware problem - Display has a "circle" burned in and 2G/3G switching

So I'm about a month into my SGS2 ownership (from early release date) and I've noticed a problem
When I drag my notification bar down it's possible to see a circle that appears to be burned into the display, it's on the bottom right hand corner of the screen, it's an outline about 1mm thick and about the size of a 5p coin...it's only viewable under monotone greys but its rather annoying - I'm thinking it's due to a chip or antenna underneath becoming too hot and warping the pixels in that area.
I've also noticed the 2g/3g switching is rather aggressive too. Even though i'm in a 3G area it's dropping off every 10-20 seconds, I lose data connection and it has to revert back to 2g or nothing at all, constantly cycling and must be draining the battery a lot too - don't know if its related to the problem mentioned above or not!
Luckily enough, I have logged a call with phones4u - last day of the 28days!! so I can go in store and have it swapped out there and then rather than have to send it off back for repair and be without a phone for 7-14 days!!
Just wanted to make people aware and see if anyone else has had a similar problem.
P-Eazy said:
So I'm about a month into my SGS2 ownership (from early release date) and I've noticed a problem
When I drag my notification bar down it's possible to see a circle that appears to be burned into the display, it's on the bottom right hand corner of the screen, it's an outline about 1mm thick and about the size of a 5p coin...it's only viewable under monotone greys but its rather annoying - I'm thinking it's due to a chip or antenna underneath becoming too hot and warping the pixels in that area.
I've also noticed the 2g/3g switching is rather aggressive too. Even though i'm in a 3G area it's dropping off every 10-20 seconds, I lose data connection and it has to revert back to 2g or nothing at all, constantly cycling and must be draining the battery a lot too - don't know if its related to the problem mentioned above or not!
Luckily enough, I have logged a call with phones4u - last day of the 28days!! so I can go in store and have it swapped out there and then rather than have to send it off back for repair and be without a phone for 7-14 days!!
Just wanted to make people aware and see if anyone else has had a similar problem.
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That's the exact same thing on my new Nexus S.
If you replaced your, did the replacement have the same issue? I'm thinking of returning mine for an exchange but I want to be sure there isn't a consistent hardware problem happening.
I have noticed the same circular discoloration too. Except mine is on the bottom left side of the screen. It is also only visible when displaying greyish colours, such as when the notification bar is pulled down.
Anyway, it is barely noticable during normal use, so I guess not a big deal for me.
bam88 said:
I have noticed the same circular discoloration too. Except mine is on the bottom left side of the screen. It is also only visible when displaying greyish colours, such as when the notification bar is pulled down.
Anyway, it is barely noticable during normal use, so I guess not a big deal for me.
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A lot of money to pay for such a high-caliber phone to have such a flaw. I notice it on varying monotones. Like when I have a carbon fiber type wallpaper or such as that.
BarryH_GEG said:
There's really two separate issues that sometimes overlap:
1) The left side banding which appears along with a yellow tint either under certain conditions or, to some, in everyday use. This would seem to be a design issue as, to date, it shows up on every single phone produced.
2) Screen QC issues which include: 1) suction cup circles from production, 2) fingerprints on the inside of the display, 3) dead pixels, 4) vertical or horizontal lines, 5) ghosting, 6) white or black blotches, and 7) wide swings in color temperature.
There's no doubt the QC issues are probably vexing to Samsung. Based on the sheer quantity of displays they need to produce to satisfy demand they're either intentionally allowing displays to go out that shouldn't or are finding out from customers that bad displays got passed QC. Considering the large number of phones sold it's hard to guess the bad:good ratio but it would appear its larger than appropriate. And it doesn't appear to be getting better as newer builds seem to have the same issues as early builds. So banding may be forever but swapping phones may definitely help with the other issues.
I do think that adding the QC issues on top of the banding issue does compound it on some phones. That could certainly explain why some of us are happy and others aren't. There's still a lot of subjectivity at play so it will always be hard to say if what's acceptable to some is unacceptable to others. But with all the phones sold, you'd still think if more than a few percent had serious screen issues there would be a bigger audience for this thread and the issue(s) would have become more prominent on its own. I'd like to think things will get better but production demands may continue to allow QC issues to occur at higher than normal rates. Something that's frustrating for everyone - including Samsung.
Someone said something about the technology being flawed. Here's two links to stories where Apple was/is trying to get SAMOLED for their products. To me, it just helps reinforce that the benefits (color, contrast, viewing angles) still outweigh the downsides (screen life, burn in, inconsistency). And I'm sure Apple's engineers fully reviewed both the upside and downside before considering SAMOLED so it's still kind of a vote of confidence in the technology.
http://www.intomobile.com/2010/05/2...y-for-iphone-hd-4g-due-to-supply-constraints/
http://www.electronista.com/articles/11/05/26/we.rebuff.rumor.of.amoled.ipad.3.in.2011/
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Highlighted in red is the reason for that specific screen defect, some may claim its a minimal issue due to not enough returns out of 6Million phones sold. If an option to get it replaced then please do but expect ANOTHER form of screen defect on the replacement unit may it be yellow banding, extreme color temps or white blotches on a totally black image.
bam88 said:
I have noticed the same circular discoloration too. Except mine is on the bottom left side of the screen. It is also only visible when displaying greyish colours, such as when the notification bar is pulled down.
Anyway, it is barely noticable during normal use, so I guess not a big deal for me.
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Click to collapse
Im not saying you should replace your phone since your entire happy with it and its not a real issue to you but things like this make manufacturers skimp on quality control.
Very informative post.
I would exchange my GS2 if it was new, but then I already have lots of stuff inside. Also, I have rooted my phone already, so I guess my warranty is void.
bam88 said:
Very informative post.
I would exchange my GS2 if it was new, but then I already have lots of stuff inside. Also, I have rooted my phone already, so I guess my warranty is void.
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You could always let the store decide about it, here in my place the software warranty is totally different from the hardware.. I even told the service personel that I flashed a lot of non samsung stuff on my phone and he told me as long as the issue is not software related theres nothing to be void. Of course this varies from region to region.
I went ahead and exchanged my Nexus S and so far I believe I have a perfect one...knock on wood...lol
I had the previous one rooted and using a custom recovery img. I relocked it but made the recovery permanent. This replacement...I rooted it but am leaving the stock recovery img in place. I even relocked it after rooting it. The only difference between this one and a stock phone is this one is rooted.

Weird spots underneath the screen?

Some time ago I noticed that, in some very special situations, like under direct and strong artificial/sun light and a particular angle, I'm able to see a couple of small, very faint spots, kinda similar to those left by dried moisture (like a drop of water) underneath the screen. At first I though it was my bad for putting on a wet screen protector, but just the other day I had a look at the device of a friend of mine (no protector wahtsoever), and looking closely I found similar spots, just not two but a single and bigger one. This got me a bit puzzled, so I decided to take a look at a third device, this time a demo unit in a shop, and guess what? Also that one had a similar mark right in the middle of the screen.
Now, not that this bothers me much, since you can't actually see it unless you really try (I can't even catch it with a camera), but I'd love to know from you guys if this is a common "flaw" or I just happened to grab a "flawed" handful of devices...
Yup, I have these dark patches. You can see them sometimes if you look at a particular angle when the phone is booting up. I can't see them any other time though
I can see dark patches when the screen is dimmed, especially at night, I can't see it any other times, Nokia returned it to me because they couldn't see it. So they asked to send it in again, it took them ten days to just flash a ROM....I was pissed as it is.
When the Display is off I can sometimes see some "blacker" areas on the screen. According to Nokia These are splices where the glass is somehow glued to the display.
Thank you guys, at least I feel a little better about it now...anyway it still puzzles me how this is the first device I own in years with this kind of issue, and I really had many, both resistive and capacitive, with or without gorilla and even made of plastic. I mean this isn't really a flaw, but knowing it's there annoys me. Damn, maybe I should really just stop being so OCD with my devices, it hurts
vnvman said:
Thank you guys, at least I feel a little better about it now...anyway it still puzzles me how this is the first device I own in years with this kind of issue, and I really had many, both resistive and capacitive, with or without gorilla and even made of plastic. I mean this isn't really a flaw, but knowing it's there annoys me. Damn, maybe I should really just stop being so OCD with my devices, it hurts
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Click to collapse
I still would class it as a fault, it makes my eyes burn.
Are you speaking about the spots which are visible in the dark if the screen is black?
I saw them when I did my screen black in diagnostics app - lcd test.
So I took a picture of "black" screen with long exposure (iso 400, 30 seconds exposure) and show it in nokia care service. Week after I got new display
load"" said:
Are you speaking about the spots which are visible in the dark if the screen is black?
I saw them when I did my screen black in diagnostics app - lcd test.
So I took a picture of "black" screen with long exposure (iso 400, 30 seconds exposure) and show it in nokia care service. Week after I got new display
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Click to collapse
Actually those aren't really "spots", it's some sort of light leak that all amoled devices have when displaying plain black: even if all the leds are supposed to be off there's still some electricity going through them. I had that on all of my amoled devices, on my Desire, on my SGS2 and on my Omnia W as well, it doesn't look that great but it's fine I guess. Weird that you still managed to get the screen replaced, maybe your unit actually had some excessive light leak.
Here I'm talking about a different thing, given that you have them you should be able to see those spots I described even with the device completely off if you keep it under a strong light and at the right angle.
vnvman said:
Actually those aren't really "spots", it's some sort of light leak that all amoled devices have when displaying plain black: even if all the leds are supposed to be off there's still some electricity going through them. I had that on all of my amoled devices, on my Desire, on my SGS2 and on my Omnia W as well, it doesn't look that great but it's fine I guess. Weird that you still managed to get the screen replaced, maybe your unit actually had some excessive light leak.
Here I'm talking about a different thing, given that you have them you should be able to see those spots I described even with the device completely off if you keep it under a strong light and at the right angle.
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Can't reproduce that. I look closely but see nothing special.
Though, as Russian proverb says - the less you know the stronger you sleep
Here is a picture of screen with the spots I was posting about.
So, if anyone have scratched screen as I had, it is a good reason to get repair
PS note that picture was taken with long exposure. Actually my eyes need to get used to darkness to see glow.
load"" said:
Can't reproduce that. I look closely but see nothing special.
Though, as Russian proverb says - the less you know the stronger you sleep
Here is a picture of screen with the spots I was posting about.
So, if anyone have scratched screen as I had, it is a good reason to get repair
PS note that picture was taken with long exposure. Actually my eyes need to get used to darkness to see glow.
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Yeah that's it, the good old light leak
Anyway the picture you took being overexposed gives the impression of a huge issue, so I guess they replaced the screen right after looking at that, even tho in normal darkness conditions it's definitely not so annoying. Good for you that you managed to get it replaced anyway
lol a 30 second exposure will bring out the worst of the display. I can understand they replaced it after showing that image that sort of tricks them because it will never be even close to that visible to the naked eye.
Completely normal for AMOLED displays.

Screen suddenly full of black lines, colorful waves and white shadows?

Last night I had no problems with the display, but when I woke up this morning I could barely see anything on the screen due to it being mostly white (like a blur or shadow), and also full of black vertical lines. I haven't dropped or soaked my phone, so I can't think of any reason why this would happen so all of a sudden. I've taken out the battery once, and it seemed to improve a little bit. When the phone is locked and only the black background and the clock is visible I can see a single white line going along the middle, but when I'm using the homescreen it's covered in thin black lines and occasionly colors that look a little like northern lights (I can't find any better way to describe it). Then the screen will occasionally 'white out' and it's impossible to read anything. I've had the phone since March, and haven't had any problems like this previously.
I'm sure the warranty covers this, but I'm hoping there's a way to fix it without sending it in and being without my phone for several weeks. Any suggestions?
Nwah said:
Last night I had no problems with the display, but when I woke up this morning I could barely see anything on the screen due to it being mostly white (like a blur or shadow), and also full of black vertical lines. I haven't dropped or soaked my phone, so I can't think of any reason why this would happen so all of a sudden. I've taken out the battery once, and it seemed to improve a little bit. When the phone is locked and only the black background and the clock is visible I can see a single white line going along the middle, but when I'm using the homescreen it's covered in thin black lines and occasionly colors that look a little like northern lights (I can't find any better way to describe it). Then the screen will occasionally 'white out' and it's impossible to read anything. I've had the phone since March, and haven't had any problems like this previously.
I'm sure the warranty covers this, but I'm hoping there's a way to fix it without sending it in and being without my phone for several weeks. Any suggestions?
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Click to collapse
Of coarse you dont want to hear it,But I would warranty it The screens have retention problems but I dont think I have heard of one going that bad.
Try to boot to recovery or download mode and see if its the same and or phone off and charging. If so Its a total issue in device.And not just when OS is booted.

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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