Database Develop

[Q] How to fix stuck pixel on AMOLED?

I have a pixel stuck on blue. It shows on red, white, and grey backgrounds. I thought it was dead but when looking at it with a magnifying glass its obviously blue. Its gone on blue, green, and black backgrounds.
I tried the dead pixel detect and fix app from the market but dont want to let it run for 20 minutes as its designed for LCDs not AMOLEDs.
What can I do?
Also, can changing your DPI increase the likelihood of dead/stuck pixels? Had no screen problems until I ran 240 DPI for a day.

So I guess OLEDs dont really get stuck pixels which means its most likely broken. How freaking lame considering Ive had this Note for barely over a week. There is some serious QA issues with these screens.

In the same situation but it is a small cluster of red pixels to the left side of screen when there is a grey back round and low light settings.
Sadly Samsung will continue this
see no evil hear no evil speak no evil ethos in regards to their after sales screen support

Atrix_E said:
So I guess OLEDs dont really get stuck pixels which means its most likely broken. How freaking lame considering Ive had this Note for barely over a week. There is some serious QA issues with these screens.
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I had 3 notes in the row all with pixel problems, unfortunately none of the apps help.

Atrix_E said:
I have a pixel stuck on blue. It shows on red, white, and grey backgrounds. I thought it was dead but when looking at it with a magnifying glass its obviously blue. Its gone on blue, green, and black backgrounds.
I tried the dead pixel detect and fix app from the market but dont want to let it run for 20 minutes as its designed for LCDs not AMOLEDs.
What can I do?
Also, can changing your DPI increase the likelihood of dead/stuck pixels? Had no screen problems until I ran 240 DPI for a day.
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Click to collapse
That's hocum thinking. It only means that your problem was there from day one but not apparent on the original DPI. =)

PoisonWolf said:
That's hocum thinking. It only means that your problem was there from day one but not apparent on the original DPI. =)
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Problem wasnt there from day 1...

Atrix_E said:
Problem wasnt there from day 1...
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My point still remains that DPI has no affect on whether a dead pixel develops or not. THere is no "stress" associated with one DPI over the other. I hope that's clear.

PoisonWolf said:
My point still remains that DPI has no affect on whether a dead pixel develops or not. THere is no "stress" associated with one DPI over the other. I hope that's clear.
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Not clear to me when you supply no facts.

Atrix_E said:
Not clear to me when you supply no facts.
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Yet you make a claim with no factual support yourself.
If this was truly the case, you'd see much more instances of people coming here complaining that the change of DPI has caused stuck pixels on their screen.
If you still want to believe that the change of DPI might have something to do with it, then operate on that hypothesis. Change the DPI to 160 and leave it at that for a day. See if that will help. If your hypothesis is correct, it'll go away, or you get another dead pixel.

PoisonWolf said:
Yet you make a claim with no factual support yourself.
If this was truly the case, you'd see much more instances of people coming here complaining that the change of DPI has caused stuck pixels on their screen.
If you still want to believe that the change of DPI might have something to do with it, then operate on that hypothesis. Change the DPI to 160 and leave it at that for a day. See if that will help. If your hypothesis is correct, it'll go away, or you get another dead pixel.
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Um I made no claim..I made a thread asking questions. Anyways I was going to apologize, I'm just $2,100 in on three Notes now and all have different screen quirks. I want to love the device so badly but 5 days into ownership just sucks.

You paid 2100 for three phones? Why not use a credit card with insurance? Thats crazy. Are you able to return them?
Sent from my GT-N7000 using xda premium

Blue1k said:
You paid 2100 for three phones? Why not use a credit card with insurance? Thats crazy. Are you able to return them?
Sent from my GT-N7000 using xda premium
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Whats crazy is you assume they are all for me.

I would return them if you could. I understand your frustration. $2100 is a lot of dough, even if it's not all for you.
Return them and try a different vendor. This will increase your odds of getting it from a different assembly line with hopefully better quality control.

PoisonWolf said:
I would return them if you could. I understand your frustration. $2100 is a lot of dough, even if it's not all for you.
Return them and try a different vendor. This will increase your odds of getting it from a different assembly line with hopefully better quality control.
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All outside return period.

Atrix_E said:
All outside return period.
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Dont know what to tell you, except sorry really. Try contacting Samsung USA. They are not legally obligated to help you but if you get the right rep they will accept it.

DPI has NOTHING to do with pixel load, the only things that are affected (hardware-wise):
.)GPU
.)CPU
simply speaking:
the display controller gets the info what to display from the GPU, it doesnt even recognize a difference in DPI, as it represents not the "real" hardware spec "DPI", it represents a value which tells the OS which iconsize (ie. 265x265pix) it should draw on the screen. this under respect of the "real" hardware DPI of the screen (318x307) determines how it looks, it changes nothing physically (on pixel level)!
I know it sounds confusing, but think a little about it...
Anyway, I can assure anyone that different "DPI" settings (the hardware DPI value cannot be "set", it has to be manufactured this way) do nothing to your hardware!
Another thing mentioned by me above (I repeat it because its important): The real hardware DPI of our screen is 318x307 and NOT 320 as almost everyone thinks! Due to the irregular size of subpixels and subpixel arrays the horizontal and vertical DPI are almost never exactly the same!
edit:
one thing on different DPI settings IS interessting, but is also logical due to different maths to calculate the above calculation:
320 DPI setting has much more "banding" in some apps then 240 DPI, for example in "brilliant quote": with 320 it has medium banding in the background, with 240 almost no banding visible!
think i should post this in the corresponding screen threads too...

Atrix_E said:
Whats crazy is you assume they are all for me.
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Well maybe clarify. Seriously. Why not pay with a card if you bought 3? Peace of mind. If mine breaks, gets stolen it is replaced for free.
Why wouldn't you do that?
Sent from my GT-N7000 using xda premium

Blue1k said:
Well maybe clarify. Seriously. Why not pay with a card if you bought 3? Peace of mind. If mine breaks, gets stolen it is replaced for free.
Why wouldn't you do that?
Sent from my GT-N7000 using xda premium
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I did pay with a card. Just a hassle when you deal with other things that make a stupid phone less of a priority. They would not honor an exchange until I threatened to call MasterCard. Seriously though I am just rolling the dice on a device with another screen issue. There is something wrong with every single one Ive seen.
Thanks for that info TML. Been running 240 dpi either way. I run 2560x1600 on my desktop so it feels more natural to me

Pixel Fixing
Hey All,
Any one having this problem, did any one try factory resetting the handset twice or thrice when this problem was persisting?
Even I faced a similar problem. I bought my new GT-N7000 on 5 June'12 & spotted a dot on 10th june.
I've tried different application but none worked. Then I tried factory resetting my Note, did it twice which actually did not cure it completely but the dot decreased in size. Now, I'll wait for some time to see if gets disappeared automatically after some time....

Hi,
Could anyone be kind enough to show why AMOLED operates differently to LCD thus making conventional stuck pixel fix unusable?
Thanks.

just got my N7 - how to check screen issues?

i dont see any screen lift (32gb CB0K) ... how to check color problems, pixels, etc?
what other checks to run?
i only have 1 week if i wanna exchange it, so i hope u ppl can help me

Dunno, man... Look at it?

mazinya said:
i dont see any screen lift (32gb CB0K) ... how to check color problems, pixels, etc?
what other checks to run?
i only have 1 week if i wanna exchange it, so i hope u ppl can help me
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Click to collapse
This is the most bizarre post I think I have ever read.
In summary, you have a Nexus7 that you can't find any problems with, and you want us to try and help you find some problems.... ????
And they call me Crazy......

CrazyPeter said:
This is the most bizarre post I think I have ever read.
In summary, you have a Nexus7 that you can't find any problems with, and you want us to try and help you find some problems.... ????
And they call me Crazy......
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Click to collapse
No. i said i dont see any physical problems. but i was asking about problems like checking dead pixels, checking that colors are right, checking other things that maybe require installing some apps for that, etc.

There are a couple of apps on the play store that can check (or help to check) for dead pixels apparently. I've not bothered with them and I just put a white screen on the N7 and looked at it. If I cant see a dead pixel, then I cant see the point of worrying about anything that my eyes are unable to notice.
All I did was
(1) Check the S/N so I could tell it was not a returned old version
(2) See if I could see any scratches or dents or any physical damage
(3) Turned it on and checked the screen had no dead pixels
(4) Checked for screen lift on the left
(5) Checked for light bleed
(6) Checked for any rippling along the sides
(7) Checked the OS version
(8) Checked the speaker was okay using the free film
That was enough for me. I'm a bit OCD, but I'm happy enough that its not got any obvious or reported issues.

Turn upp the brightness check for lightbleed in a dark room and check so that the screen hasn't lifted from the glass. Other than that there's nothing special you need to check in my opinion.

AngeleDei said:
There are a couple of apps on the play store that can check (or help to check) for dead pixels apparently. I've not bothered with them and I just put a white screen on the N7 and looked at it. If I cant see a dead pixel, then I cant see the point of worrying about anything that my eyes are unable to notice.
All I did was
(1) Check the S/N so I could tell it was not a returned old version
(2) See if I could see any scratches or dents or any physical damage
(3) Turned it on and checked the screen had no dead pixels
(4) Checked for screen lift on the left
(5) Checked for light bleed
(6) Checked for any rippling along the sides
(7) Checked the OS version
(8) Checked the speaker was okay using the free film
That was enough for me. I'm a bit OCD, but I'm happy enough that its not got any obvious or reported issues.
Click to expand...
Click to collapse
can you elaborate on the the free film? is that an app?

mazinya said:
can you elaborate on the the free film? is that an app?
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lol - No. Its that Transformer's Movie that is shipped with the Nexus (at least it is in the UK). I just wanted something that made a sound. I didnt use any special apps. There are (apparently) some, but I couldnt see the point.

AngeleDei said:
lol - No. Its that Transformer's Movie that is shipped with the Nexus (at least it is in the UK). I just wanted something that made a sound. I didnt use any special apps. There are (apparently) some, but I couldnt see the point.
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lol ok. well here we dont get any transformers movie. i did put some trailer on youtube and things sounded fine.
btw, im still reluctant on upgrading to 4.2 though i keep getting notifications for that, so in the meanwhile until bugs are fixed i think im gonna stay with 4.1

mazinya said:
No. i said i dont see any physical problems. but i was asking about problems like checking dead pixels, checking that colors are right, checking other things that maybe require installing some apps for that, etc.
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If it looks good, why try and find problems?

CrazyPeter said:
If it looks good, why try and find problems?
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was just trying to be on the safe side since i only have 1 week to returnin case of problems. here in my country its not like in the USA that they have 30 days or so

Someone with the phone please try this.

Hey guys-
I have the galaxy s6 and I have a weird problem which I think may or may not be burn in. Someone please take the phone outside and try this:
1. Put phone under as much sunlight as possible
2. Open display to white screen.
3. Now look at the borders of the display(about 1 inch from top and bottom and 1/4 inch from left and right side.
Do you see a grey color line bordering that chunk of the display?
I am thinking of contacting t-mobile but my gut tells me this is in the design of the display assembly. Please let me know. Thanks in advance guys.

I see exactly what you're saying but it doesn't look to me like a factory defect

laureanop said:
I see exactly what you're saying but it doesn't look to me like a factory defect
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You see the greyish lined box? It is quite annoying once you see it.

Yeah I do but it doesn't really bother me

I see. It definitely bothers me when I see it. That is just me though. T-mobile says that it is a defect in my phone and not normal though. Looks like that is not the case.

parsa5 said:
I see. It definitely bothers me when I see it. That is just me though. T-mobile says that it is a defect in my phone and not normal though. Looks like that is not the case.
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explain one more time? did Tmob. tell you to return it?

FIREONHIGH said:
explain one more time? did Tmob. tell you to return it?
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Yes, they said it is a defect in my unit but the reality is that it is present on all units. Take a look on yours for yourself. Quite annoying once you see it.

parsa5 said:
Yes, they said it is a defect in my unit but the reality is that it is present on all units. Take a look on yours for yourself. Quite annoying once you see it.
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wtf? i hope mine is ok, should have in hand by tues,wends, ,, post pics please? late aprilfools joke?lol.. i calling them in the am,, get some pics. for us.!!!

FIREONHIGH said:
wtf? i hope mine is ok, should have in hand by tues,wends, ,, post pics please? late aprilfools joke?lol.. i calling them in the am,, get some pics. for us.!!!
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I will certainly try tomorrow. It does seem like it will be an issue on all models based on what the other Xda user said and confirmed the same thing I have seen.

Touch screen periodically starts dropping inputs

Hey everyone. I just got the Blu r1 HD on the mail and I love this phone. Everything I've thrown at it works flawlessly and I've had no trouble except for this one problem.
There are periods of time where the touch screen will drop input for a half a second to 3 seconds at a time. Usually it works fine but sometimes I'll try to type and I keep missing on the keyboard because the touch screen drops inputs. It's not just the keyboard it's anywhere else too
Most of the timeit works well but when this starts happening it's aggravating to use. Anyone know what causes it?
I'm gonna have to return the phone regardless but I really would like to know if there's a possible fix or if this problem is inherent to all models. I really hope not because I really like this phone.
Thanks all so much

amaskedman said:
Hey everyone. I just got the Blu r1 HD on the mail and I love this phone. Everything I've thrown at it works flawlessly and I've had no trouble except for this one problem.
There are periods of time where the touch screen will drop input for a half a second to 3 seconds at a time. Usually it works fine but sometimes I'll try to type and I keep missing on the keyboard because the touch screen drops inputs. It's not just the keyboard it's anywhere else too
Most of the timeit works well but when this starts happening it's aggravating to use. Anyone know what causes it?
I'm gonna have to return the phone regardless but I really would like to know if there's a possible fix or if this problem is inherent to all models. I really hope not because I really like this phone.
Thanks all so much
Click to expand...
Click to collapse
I have noticed this too. Kernel source was just released. I'm going to go ahead and blow wind but I feel there is a multi-touch delay. Kernel source being released should fix this.
I just feel how this thing sips power that it was tuned that way. Annoying? Yes. Correctable? More than likely. I'd say hold your ponies before you send that back and buy one thats been fixed to not be bootloader unlocked.
Cheers!

Gytole said:
I have noticed this too. Kernel source was just released. I'm going to go ahead and blow wind but I feel there is a multi-touch delay. Kernel source being released should fix this.
I just feel how this thing sips power that it was tuned that way. Annoying? Yes. Correctable? More than likely. I'd say hold your ponies before you send that back and buy one thats been fixed to not be bootloader unlocked.
Cheers!
Click to expand...
Click to collapse
Thanks for your response. Do you get consistently sluggish or is it responsive with random bouts of dropped inputs? Because it's the latter for me.
I almost think it's something do with the digitizer controller or firmware but I'm not sure.
I also occasionally notice ghost swipes when this happens.
Feels like the oneplus one all over again hopefully the kernel source being available helps us find a solution. I'll take a look myself but wouldn't know the first place to start to debug the touch screen
Thank you!

Any progress on this issue? I've been living with this problem for months and I'm about ready to trash it.

JLacan said:
Any progress on this issue? I've been living with this problem for months and I'm about ready to trash it.
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Was you able to find a solution? I bought this phone for my mom and same behavior received since week 2.

Pablo_Mena said:
Was you able to find a solution? I bought this phone for my mom and same behavior received since week 2.
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I'd like to know this as well. I recently just purchased the blu r1 hd and I'm waiting for it to ship.

Same here, but I normally wipes my screen clean, and it's back to normal.

Damn, was thinking of buying this phone (prime version).. until I saw this thread, fack

Dillybob said:
Damn, was thinking of buying this phone (prime version).. until I saw this thread, fack
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I don't know how wide spread the problem is. I have 3 and none have had touch issues.

mrmazak said:
I don't know how wide spread the problem is. I have 3 and none have had touch issues.
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Oh really? I'm still trying to find a phone that is better that is around this budget. 60$ is just insane. I'll prob end up getting it now

mrmazak said:
I don't know how wide spread the problem is. I have 3 and none have had touch issues.
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Click to collapse
I also agree ... I've heard of some who have mentioned these touchscreen issues, but I have 4 BLU R1-HD and none of them have had any problems.

My screen has died

I woke up this morning, and there is a horizontal line in the middle of the screen which doesn't accept touch input. The area is about 1cm high and stretches across the whole screen.
I have hard reset but still this area exists. Has anyone heard of such a thing?
Thanks .

donbronzi said:
I woke up this morning, and there is a horizontal line in the middle of the screen which doesn't accept touch input. The area is about 1cm high and stretches across the whole screen.
I have hard reset but still this area exists. Has anyone heard of such a thing?
Thanks .
Click to expand...
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From what You have described it seems to me that this is a hardware issue, unfortunately :crying:.
Did you recently drop your phone or something like that?!

Jehonan said:
From what You have described it seems to me that this is a hardware issue, unfortunately :crying:.
Did you recently drop your phone or something like that?!
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Click to collapse
I think the same. Nope, no drops or accidents, the hone is in mint condition... SO random!

Jehonan said:
From what You have described it seems to me that this is a hardware issue, unfortunately :crying:.
Did you recently drop your phone or something like that?!
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Click to collapse
Does not need drop for this to happen. Production issues happened, always, albeit at low percentage (3-5% maybe). I'm not sure if warranty covers this, though.

leledumbo said:
Does not need drop for this to happen. Production issues happened, always, albeit at low percentage (3-5% maybe). I'm not sure if warranty covers this, though.
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Then what warranty do covers? If not production issues? Warranty won't cover if he would have dropped the phone and this is clear manufacturer fault.

leledumbo said:
Does not need drop for this to happen. Production issues happened, always, albeit at low percentage (3-5% maybe). I'm not sure if warranty covers this, though.
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Click to collapse
Yes, i know this!
Even pacemakers are not 100% sure and reliable so there is nothing strange there but I'm looking at this from more human side and to give this man some consolation so to speak, that's all.
But of course you are also right here and to be totally honest those displays with production issues in 3-5% are pretty low if this is to be the case though.

I have heard of such things but your phone must be relatively new for this to happen unprovoked? If you had it for some months and the touchscreen failed only now something happened to it I think, if you didn't drop it then maybe some exposure to extreme temperatures did it. I hope it is new so you can try to return it or at least have it fixed under warranty.

kingbasescu said:
I have heard of such things but your phone must be relatively new for this to happen unprovoked? If you had it for some months and the touchscreen failed only now something happened to it I think, if you didn't drop it then maybe some exposure to extreme temperatures did it. I hope it is new so you can try to return it or at least have it fixed under warranty.
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Click to collapse
https://youtu.be/uI4KYzG0yss?t=340
Is this extreme enough?

Thanks all of you, if its a manufactures fault then of course it will be covered by warranty... Point is, it will still leave me phone less for the time its being corrected.
But, the fault has...... progressed. It has now got slightly better, or the non responsive area has seemed to move. The area which was unresponsive yesterday is now ok, but there are other areas which are responding randomly.
I do live in the tropics, could be overheating, but i'm sure that is physical and that it will continue to come and go until i get it repaired....