Develop Bugs

[Q] purplish screen

like Trakman reported (http://forum.xda-developers.com/showthread.php?p=24834547#post24834547) when the brightness is set to low (automatic or not) the gray colour of my Lumia 900 is more purpleish. You can see it when the keyboard is expanded or in a screen with the Pivot, on the gray out items.
Anybody got the same problem ?

dial ##634# and than run the screen test. IF the color looks right than you pass if not fail and return.

I take a picture with the Lumia 800 and you can see that at low brightness the gray is not so gray.
Low brightness:
http://forum.xda-developers.com/attachment.php?attachmentid=1003506&stc=1&d=1334426620
Automatic brightness:
http://forum.xda-developers.com/attachment.php?attachmentid=1003507&stc=1&d=1334426620

UPDATE!!!
So, after reading the responses from my original post. I went down to the ATT store where I got my replacement Lumia 900 updated version for a low volume mic and they told me that the screen was normal after three reps inspected it and compared it to other Lumia 900's in the store that were not purple. They said that it could be because of the software update. I told them that my original phone did not turn purple in low lighting and others that have updated the software did not turn purple as well, but the still did not approve the replacement.
So, I went to another ATT store and told them about my purple screen and did not mention anything about the software update and they compared it to other lumia 900's in the store and approve my exchange. So, dont mention anything about software. There is definately something wrong with the screen. My new 900 does not have a purple screen.

Just get Rogers Support on the phone and they flag my device to be replaced. So I'm going to get a new one next week when stores have them in stock again.

I have this issue on an updated phone, too. Think I'll wait a bit before I swap my phone out--but it is annoying.

I also have this issue on my Rogers phone.
On medium and high brightness, grey is grey. On low brightness, grey is distinctly purple.
Should I bother taking it in or are they all like that?

Purple screen AT&T
I picked up a Lumia 900 yesterday on AT&T and have the same purple screen issue reported here. it seems go go away on manual brightness at medium level. The unit I exchanged this for would not even boot past the carrier logo screen. Very disappointed in Nokia's showing here and, coupled with its data issues at launch, it's lack of QC on this product. The large amount of negative feedback on the 800's hardware and software issues seem to be mirrored here with the 900.

this seems like a software bug .. hope nokia fix it ..

Mine has this issue as well.
Do we have a confirmation that this is on all or only some devices?

Us Canadians are very unlucky .. April 16th is done and still no update ... who is going to worry about Purple screen

tewmgd said:
I take a picture with the Lumia 800 and you can see that at low brightness the gray is not so gray.
Low brightness:
http://forum.xda-developers.com/attachment.php?attachmentid=1003506&stc=1&d=1334426620
Automatic brightness:
http://forum.xda-developers.com/attachment.php?attachmentid=1003507&stc=1&d=1334426620
Click to expand...
Click to collapse
I hate you!!!!! you dont have that att logo which makes the phone looks hundreds of times uglier, ps i would love to trade phones with you but...

lovenokia said:
I hate you!!!!! you dont have that gay att logo which makes the phone looks hundreds of times uglier, ps i would love to trade phones with you but...
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Click to collapse
Lol.
Neither the Lumia 900 or the Samsung Focus were physically branded by Rogers. Its quite nice.
The Lumia 900 does have a Rogers boot screen though... I'm pretty sure that adds seconds onto the booting process...

I just got a replacement Lumia today and noticed the purple hue whenever the phone is on low brightness. It feels like a software bug to be honest. But it still sucks. First I had a headphone jack/freezing issue, now my screen turns purple at times.

They had a similar problem with some N8 phones, but as far as I know after couple of software updates it was gone. I doubt that this is a similar issue.. that would be strange considering the different software platforms, but in both cases its purple..

Mind pointing that out? At first I was convinced it was a software bug but then after looking up nokia purple tint it seems like its a hardware issue that was never solved. Customers are left having to go to the repair center or with Nokia telling them it's normal.

Well guys I just got back from the AT&T store. The replacement Lumia I received yesterday had the purple tint issue and both replacements I got today had the issue. I left with my original phone thinking it might be a software issue. None of the Lumias in the store had this issue though.

Yup, I have a Rogers Lumia 900 and I have the purple tint issue on low light.. I noticed it but it hasn't really bothered me so meh, I am just going to keep it.

Yeah, just returned my Cyan for the white one and I have the purplish tint also when it's on low light. Definitely didn't have this problem on my Cyan one. And I hope they can fix it with a software update.

I know this isn't terribly useful but I can confirm that my updated black Lumia 900 does not have this issue.

Bought white one but it's going back

Bought a white 900 at the Microsoft Store tonight.
Suffers from the purple screen problem, and the rattling vibration problem. Also the camera is not as good as my original Titan.
Wanted to love it but it's going back.
Sent from my Lumia 900 using XDA Windows Phone 7 App

first two issues can be solved by replacing it, which they will for sure, and the camera issue is more software than hardware, so an update will fix it as well.

Interestingly, the one I got didn't already have the Nokia update on it. This tells me that the white ones were manufactured right alongside of the black and cyan ones and just held back for a couple of weeks. That's not a surprise, but it means that just because the white ones came out a little later, we shouldn't expect any of the quirks to have been addressed.
The camera quality is disappointing to the point where I am wondering whether I have a defective unit. The picture quality reminds me of a first-generation plasma TV, before the technology had achieved good contrast ratios... for example there are areas of color staining, and of solarization, especially in low-light conditions. I also have artifacts that are clearly in a ring shape as if the lens cover has some imperfections or reflections in it.
From what I am reading, the rattling is widespread and possibly even on all units, while the purple tinge is only on some units. I can't live with either.
I love the device's physical design, and Nokia's exclusive apps are very cool indeed... but my Titan just works better.

If the rattle is in all the units i will not be getting the device. that is a deal breaker for me, sadly.

Well I have the cyan and plan on getting the white tomorrow..i experienced rattling the first day and after that it was totally fine...camera doesn't give me any purplish tinge but the quality isn't so great in low light..also when u exchange make sure u look for the green dot on the box
Sent from my Lumia 900 using Board Express

Both the original one I got and the replacement had green dots and both had the exact same problems of purple tint on 'low' brightness setting, and excessive rattling during vibration.
I had the replacement for only 2 minutes.
The phone is physically gorgeous and in fact I already miss it! But I just can't live with the 2 problems and the camera that's not as good as the Titan's.

tai4de2 said:
Both the original one I got and the replacement had green dots and both had the exact same problems of purple tint on 'low' brightness setting, and excessive rattling during vibration.
I had the replacement for only 2 minutes.
The phone is physically gorgeous and in fact I already miss it! But I just can't live with the 2 problems and the camera that's not as good as the Titan's.
Click to expand...
Click to collapse
wow you really had two lemons on your hand. I still have my original unit, and yes, the vibration rattle was present, but I don't know if I got used to it, or if it actually went silent with time. You can still hear it, but not as loud as when I first got it. I bought the black one from Rogers.

I don't know what the big deal about the "rattle" is. The sim holder vibrates a bit internally when the phone vibrates, it's really not that bad. If you're listening for it you'll hear it, but with the phone in your pocket you don't notice it and it doesn't affect the function at all.

BooR4dley said:
I don't know what the big deal about the "rattle" is. The sim holder vibrates a bit internally when the phone vibrates, it's really not that bad. If you're listening for it you'll hear it, but with the phone in your pocket you don't notice it and it doesn't affect the function at all.
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Click to collapse
Exactly. It doesn't seem any louder than my old Captivate when vibrating, and while it is a little noisier than my iPhone 3G was, at least I can actually feel this one from my pocket. Much ado about nothing, if you ask me.

stratax said:
If the rattle is in all the units i will not be getting the device. that is a deal breaker for me, sadly.
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Click to collapse
While the rattle on my cyan didn't bother me one bit. I can confirm my white one doesn't do this.

Found black blotches on my screen

Okay. so I have a few black blotches on my screen, but I can only see them on a certain kind of black, but here's how to tell if you have this issue go to phone click on the menu key than call settings now go to call rejections from in there look at your phone screen at all every angle possible, if you don't see black blotches than you don't have an issue like I do.
Good luck
Also try doing this in the dark

Andrew149 said:
Okay. so I have a few black blotches on my screen, but I can only see them on a certain kind of black, but here's how to tell if you have this issue go to phone click on the menu key than call settings now go to call rejections from in there look at your phone screen at all every angle possible, if you don't see black blotches than you don't have an issue like I do.
Good luck
Also try doing this in the dark
Click to expand...
Click to collapse
Looks like a manufacturing defect, the blotches are in the same place on everyone s phone.

Weird mine are on the bottom half of the screen
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

It's normal. Samoled at its finest.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

I don't see them on that screen because the blacks are too black also I'm in a brighter lit room. But if I am watching a movie and it goes dark I can see minor blotches.

I noticed this and I took it to warrenty but they refused to replace or fix it. I dunno what to do. Is this breach of contract?
lalala SGS3 lalala

You would have to LIVE WITH THE STAINS AND BLOTCHES...
This is widely known issue known as OLED "mura" effect
It has stains and many black dots affecting the Galaxy S2, Note, S3, PS Vita and even some of the Galaxy S1 devices...
This is due to cheap manufacturing and QA ...

mms6 said:
This is due to cheap manufacturing and QA ...
Click to expand...
Click to collapse
Is it this, or is it a limitation of the AMOLED manufacturing process? My blotches are very minimal and I very rarely ever see them. I would much rather have the contrast of the AMOLED tech with the blotches than have my S3 equipped with an LCD.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Definitely not an limitation of the manufacturing process.. My first-gen Samsung Captivate's screen blacks are actually deeper than the my Galaxy S3 with maximum brightness, displaying the same completely black #000000 screen in a completely dark bedroom at night...
Also what I have realized is that on my Captivate's screen, it do not has any of the stains or the dots on it when viewed in a dark room.. It has a little bit of "banding" problem on the top portion of the screen, but it is less noticeable than the stains and especially the "black dots" effect...
I have the EXACTLY same problem with my PS Vita similar to my Galaxy S3, but the PS Vita has much more stains than dots than the GS3 (more imperfection) although the PS Vita is lower resolution, and slightly bigger screen. The PS Vita uses the Samsung Super AMOLED Advanced (pentile matrix)...
Also, the screen production is not consistent on the GS3. My first GS3 has Wi-Fi random disconnection issues, so I exchanged it under the 15 days policy from Rogers, for another GS3.. The original GS3 has a lot of "black dots" (approx around 15 or so) and slightly stained on the top right corner.. The exchanged GS3 was slightly better and had no stain marks and only a few black dots and a slight pink spot (when viewed on white #FFFFFF).. Also I had to exchange my second one back to the store because my battery cover had some hairline cracks within a week of usage or so..
The THIRD AND FINAL GS3 I received did not have any stains, but suffered a more severe "black dot" effect (approx. 15-20 dots).. But my Wi-Fi issue was fine, and there are no pink spots, so I have been using it until now and did not really bother an exchange....
If you are extremely lucky, you might get a "perfect" or "near perfect" AMOLED in the current generation... But still the QA is going down the toilet when compared to my First Phone with Super AMOLED, my Samsung Wave S8500 (the screen was PERFECT on this one, NO stains/dots/smudges etc...)
Samsung is cutting costs and lowering QA because it is fulfilling more AMOLEDs for other manufacturers such as themselves (its is not just the top of the line Galaxy S# series using AMOLED, mid-end and some lower ends Galaxy series are using AMOLED as well) Also Samsung has to supply for Motorola, HTC (fewer models though), Sony (only for PS Vita), Fujitsu (for the Japanese Keitai smartphone from KDDI and Docomo) and so on.....
Now all this happened in quite short period of time, Japanese keitais with OLEDs came on the market last year... Samsung Wave came onto the market in 2010, there is only a 1 - 1.5 years in between here... The demand exponentially increased as smartphone sales went up, and more manufacturers are contracting Samsung to build OLEDs..
Personally, I do not think the process of making OLEDs have improved....
THE ONLY area it might have improved is probably the PRINTING... Printing higher resolutions has allowed Samsung to increase the pixel density and decreasing the subpixels (and this is probably why the Super AMOLED HD screens are dimmer than the original Super AMOLEDs at the same maximum brightness)
That is all I can say for now...
Live with the miniscule defects such as stains, dots, smudges etc on your OLEDs.... These problems are minor issues anyways since you have to be in a very dark environment with almost complete black #000000 image to be able to pick up the "defects".... Wait for a few more generations and allow the manufacturing process to improve more and still be able to fulfill Samsung's own demands and contracted demands for other manufacturers..... (Or other companies might finally bring more and more of their own technologies in OLED to the consumer masses)...
END OF RANTS...
-----------------------------------

It's normal ever since the hd samoleds came out. Same problem across many manufacturers. My razr was horrible with this stuff.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

robstunner said:
It's normal ever since the hd samoleds came out. Same problem across many manufacturers. My razr was horrible with this stuff.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Mine has the defect but I only see it when in a very dark environment and only on a certain black type of screen. Normally the black screen that shows up when starting a Netflix video I will see it for a moment. It doesn't bother me that much but do agree that it looks like s***! Other than the blotches in a dark environment though, you'd never see it.

I also noticed these spots too. I do not think it is a big deal foudn a few threads talking about other phones and most people agree it is common and only effects the screen when theres nothing moving on it. In other words yes you will notice it but no your screen is not damaged.

Screen light blee.

Hi guys,
Do you have any light bleed on your screen? I have a few spots on the bottom edge of the screen.
Thank you,
Martin

malutki said:
Hi guys,
Do you have any light bleed on your screen? I have a few spots on the bottom edge of the screen.
Thank you,
Martin
Click to expand...
Click to collapse
Yea, That's Samsung for you. I was lucky not to have any on my device. And from the looks of it, it isn't too common on the Note 2014.
The Nexus 10 though. Wow. Everyone had it. It wasn't a question of if you have it or not, it was about how bad. Not to mention the blacks were blue.
I'd exchange it if I were you, no point in getting stuck with that.

Nope, no blee here.

californiarailroader said:
Nope, no blee here.
Click to expand...
Click to collapse
I will exchange mine. Hopefully the new one will have no bleeD

Mine just came today and with my normal brightness setting there is only the slightest hint of bleed from one of the four LED spots on the bottom of the screen.
My panel seems perfect so far so it doesn't seem likely I will exchange it over this.
I'm pretty impressed, but I have to say the build quality is not up to par with my IPad and not what I would expect at this price. Samsung has a long way to go to produce really premium products.

30Seconds said:
Mine just came today and with my normal brightness setting there is only the slightest hint of bleed from one of the four LED spots on the bottom of the screen.
My panel seems perfect so far so it doesn't seem likely I will exchange it over this.
I'm pretty impressed, but I have to say the build quality is not up to par with my IPad and not what I would expect at this price. Samsung has a long way to go to produce really premium products.
Click to expand...
Click to collapse
I would like to see one iPad without a light bleed. So far a few I saw (including 2 which belong to my wife) had some light bleed as well. What is wrong with build quality of your unit? Mine, except for light bleed, is very good.

I think my tablet has very very slight bleed at the bottom of the screen near both capacitive buttons, I won't return it because it's barely noticeable BUT does this mean the whole screen has an issue and also could it deteriorate over more usage or anything like that.
Apologies if these are idiotic questions but this "screen bleed" is a completely new subject for me lol.
malutki said:
I will exchange mine. Hopefully the new one will have no bleeD
Click to expand...
Click to collapse
How was your exchanged tablet?

I think my light bleed is actually getting worse and I am thinking about exchanging it now that there is more stock available.
One of the spots on the bottom is about 1 cm, and while viewing movies it is a nuisance.
Does anyone have a perfect screen?

30Seconds said:
I think my light bleed is actually getting worse and I am thinking about exchanging it now that there is more stock available.
One of the spots on the bottom is about 1 cm, and while viewing movies it is a nuisance.
Does anyone have a perfect screen?
Click to expand...
Click to collapse
This was my worry, my screen has slight light bleed at the bottom nothing too noticeable but then again don't all LCD screens have some form of light bleed

Writting from my third Note 10.1 2014. The first one had a huge dust particle under the screen and bad bleeding. The second one had a bearable bleeding but at least 7 bad pixels (3 dead ones right in the middle of the screen and 4 stuck). This Note 10.1 has almost non- existent bleeding and just one little dust particle (invisible if you are not looking for it) but has yellow tint along the bottom edge (over the buttons) and at the bottom left corner, so when you are reading in portrait mode over white background it is impossible not to get distracted as you start one line with black over white and you finish it with black over yellow.
I truly love this device but I am getting tired of all of this. My third replacement is on its way, though I seriously doubt it is going to be a good one.
iiSo say we all!! from my SM- P600

Just noticed the blee today while watching netflix...does it actually get worse? I can live with it now but I would send it in for a replacement if it's gonna deteriorate over time

I'm on my third device and 2 of them have had lightbleed. I can't say for the first one though because the screen was dead on arrival. I think everyone should expect some lightbleed on any LCD screen. If your tablet is perfect in every other aspect other than a little screen bleeding then I wouldn't exchange it. There are too many things that can be messed up other than the screen such as S-pen detection, loose speaker grills, dead pixels, dead screens, faulty bluetooth, and the list goes on...

I have a 32bg black model and my GF has a white one, both bought at BB at about the same time. There is quite a lot of difference between the screens, mine has quite a bit of light bleed on the upper right and all across the bottom - you can see the individual leds - hers does not. However my screen is quite a bit brighter and much more "white," in side by side comparison hers looks a bit yellow. All of the screen settings are exactly the same. Last night we had them both on for 3+ hours of internet and point-and-click gaming, I had 80% power remaining while she had 56%, checking hers I noticed the brightness was at 100 while mine was around 25%. She says it needs to be that high to see the game and it does seem much darker/mudier than mine. Thinking these must have different panels because they look so different. So, light bleed or dim yellow battery eating screen, are these our options?

The pictures were taken with an iPhone 5S (flash off). The tablet's brightness was maxed and as you can see, the room was dark. Does this degree of backlight bleed warrant a return (mainly concerned of the tablet's longevity. Thoughts appreciated.

manhattan212 said:
The pictures were taken with an iPhone 5S (flash off). The tablet's brightness was maxed and as you can see, the room was dark. Does this degree of backlight bleed warrant a return (mainly concerned of the tablet's longevity. Thoughts appreciated.
Click to expand...
Click to collapse
You need to take a picture with a plain black background, only then can we give you our thoughts.
Sent from Galaxy Note 10.1 2014 Edition via Tapatalk.

Geordie Affy said:
You need to take a picture with a plain black background, only then can we give you our thoughts.
Sent from Galaxy Note 10.1 2014 Edition via Tapatalk.
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Click to collapse
manhattan212 said:
The pictures were taken with an iPhone 5S (flash off). The tablet's brightness was maxed and as you can see, the room was dark. Does this degree of backlight bleed warrant a return (mainly concerned of the tablet's longevity. Thoughts appreciated.
Click to expand...
Click to collapse
here it is. Same exact conditions. Thanks for your opinion, in advance.

The picture isnt very clear as its difficult to take a picture of properly but if the points I have highlighted are the only bit of screen light bleed you have then yeah its normal, I have pretty much identical bleed points too as do most people on here.
Sent from Galaxy Note 10.1 2014 Edition via Tapatalk.

Geordie Affy said:
The picture isnt very clear as its difficult to take a picture of properly but if the points I have highlighted are the only bit of screen light bleed you have then yeah its normal, I have pretty much identical bleed points too as do most people on here.
Sent from Galaxy Note 10.1 2014 Edition via Tapatalk.
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Click to collapse
Thanks, I appreciate the prompt response.
And I'm inclined to agree with your observation. In particular, those are indeed the points of bleeding.
What do you make of the top corners being so bright, though? It's not like the points you've highlighted, but rather large areas -maybe this is where the light comes from?
In all honesty, I'm more concerned about future degradation than anything else. If the device is going to remain as is, I don't mind the current state of bleeding. But if this is an indication that the device will be noticeably worse in a few months down the road, then I'd like to take it back to the shop and exchange it.
Again, thanks for your time and opinion.
Much appreciated -and thanked.

manhattan212 said:
Thanks, I appreciate the prompt response.
And I'm inclined to agree with your observation. In particular, those are indeed the points of bleeding.
What do you make of the top corners being so bright, though? It's not like the points you've highlighted, but rather large areas -maybe this is where the light comes from?
In all honesty, I'm more concerned about future degradation than anything else. If the device is going to remain as is, I don't mind the current state of bleeding. But if this is an indication that the device will be noticeably worse in a few months down the road, then I'd like to take it back to the shop and exchange it.
Again, thanks for your time and opinion.
Much appreciated -and thanked.
Click to expand...
Click to collapse
No problem mate.
From what I understand Lightbleed comes from the points it's visable - it's just that for whatever reason the device doesn't block the light passing through hence the brighter areas along the bottom. And about degradation from what I have read it doesn't get worse or better just stays like that.
It depends on you if you want to give it back and keep trying to get a bleedless device but as some form of Lightbleed is common on LCD's it will be tough. I returned one due to high Lightbleed which was visable in a lit room and the brightness on low - that's bad Lightbleed and I couldn't accept that so I got the one I have now and the Lightbleed for me is more than acceptable. Plus the other problem is if your device is perfect apart from the bit of Lightbleed your next one could have other issues LOL.
Sent from Galaxy Note 10.1 2014 Edition via Tapatalk.

Geordie Affy said:
Plus the other problem is if your device is perfect apart from the bit of Lightbleed your next one could have other issues LOL
Click to expand...
Click to collapse
And on that note, I'll be sticking with this one.

Irregular Display Lighting (with Pictures)

I have a visible light strip at the top of the display... what should I do? I say to myself I don't care but it annoys me because I keep noticing it.
Here pictures, please check them out:
https://drive.google.com/drive/u/0/...xWVXBiUGhRTG9MR19qTTVlejJkQ3RYdUk?ltmpl=drive

That's light bleed

do you have it too? should I send it back or do all lg g4 have this?

Pictures are not loading.

Weird... heres the drive folder:
https://drive.google.com/drive/u/0/...xWVXBiUGhRTG9MR19qTTVlejJkQ3RYdUk?ltmpl=drive
Do you guys have this too?

ruzkay said:
Weird... heres the drive folder:
https://drive.google.com/drive/u/0/...xWVXBiUGhRTG9MR19qTTVlejJkQ3RYdUk?ltmpl=drive
Do you guys have this too?
Click to expand...
Click to collapse
That's light bleed - light seeping from the backlight into the edges of the display. Happens when the display is compressed/bent during installation into the phone. Nothing you can do about it but get the phone exchanged if it bothers you that much. However, if you exchange it, it's the luck of the draw - you might get a better one or a much worse one.
Unfortunately, all LCD displays are prone to this, as manufacturers would have to reject something like 50% of them otherwise - I had to go through SIX brand-new 27" Dell monitors before I found two that I could live with - and they're still far from perfect.
I had to exchange my iPad Mini twice to get a good display, and my Nexus 9 three times. It's totally random. Got lucky with my G4 that has a perfect screen (though I had to exchange it, too, as the first one had dust stuck between the front glass and the display panel).
Manufacturers just have really low "acceptable quality" standards to maximize profits/units sold, as many people will never notice those issues.

siraltus said:
That's light bleed - light seeping from the backlight into the edges of the display. Happens when the display is compressed/bent during installation into the phone. Nothing you can do about it but get the phone exchanged if it bothers you that much. However, if you exchange it, it's the luck of the draw - you might get a better one or a much worse one.
Unfortunately, all LCD displays are prone to this, as manufacturers would have to reject something like 50% of them otherwise - I had to go through SIX brand-new 27" Dell monitors before I found two that I could live with - and they're still far from perfect.
I had to exchange my iPad Mini twice to get a good display, and my Nexus 9 three times. It's totally random. Got lucky with my G4 that has a perfect screen (though I had to exchange it, too, as the first one had dust stuck between the front glass and the display panel).
Manufacturers just have really low "acceptable quality" standards to maximize profits/units sold, as many people will never notice those issues.
Click to expand...
Click to collapse
I see thanks, I had some light bleed (I knew what it is didn't remember the english word LOL) on my N4 too but nowhere near this and it didn't seem like a solid strip more random...
Sent it back... hope I got luck with the next one, and hope Amazon is quick my current phones battery is pretty much dead...