Develop Bugs

[Q] LCD Bakclight Glow

Hi
I've bought yesterday my Desire and I've noticed that in the upper middle screen part there is a small yellowish backlight glow only seen on black background. Can You tell me if there should be one or I should take it back to the shop ? This is probably the new SLCD version. I don't know is this a flaw or all of the sceens have some little glow on the black.
Thanks in advance

yellowish backlight?
is it in a dot size?
have you try different background color (red, green, blue)?

yellowish backlight?
is it in a dot size?
have you try different background color (red, green, blue)?

It is some kind of LCD bleeding. It looks similar to the picture attached below.
Mine is just slightly visible compared to this photo (copied from androidforums.com) but still it's the same issue. I just wanted to confirm from a SLCD Desire user if this is a typical for those diplays, or if I should take it back to the shop.

Most LCD screens bleed light to some degree, but that looks totally unacceptable to me. I'd take it back.
EDIT: Oops, should have read the full post. Well that one above is really bad, any chance of getting a picture of yours?

aljwatson69 said:
Most LCD screens bleed light to some degree, but that looks totally unacceptable to me. I'd take it back.
EDIT: Oops, should have read the full post. Well that one above is really bad, any chance of getting a picture of yours?
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Yeah, I finally managed to do some photos.
The second one is with other light source (a 20W lamp). The first and third are without any lamp, high iso photos, but the first one has added brigthness in Photoshop, and third is on default. Remember these photos are on full display brightness, just to show how the screen behaves on dark, black background.

cant u see if its slcd on the side of ur package?

ninjaijutsu said:
cant u see if its slcd on the side of ur package?
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It is a slcd because it doesn't say it's amoled on the back. I just wanted to know if all slcds in Desire have this problem. I don't want to take it back just to get another device that has the same problem or even worse.

Well that's definitely SLCD... OLED (like my phone) will be pitch black when it's on a black screen, as there is no backlight on them.
Yes that is definitely a flaw. I would definitely take it back. It's unlikely you'd get another one that bad.

I've found a film on YouTube:
So it's just probably the thing with all SLCD's. Still I love the phone and since I know that I won't get a AMOLED version I'll probably keep this and just have fun with it. Thank You all for Your replies

LED notifications?

I find it really surprising that they have done it once again - released a device with a full RGB LED,but without any support for it in the software by default. Pretty much like my old Nexus One, the Galaxy Nexus can only blink in white for me. Has anybody found a way to use all colours of the LED for different notifications?

Tweet deck for blinks a yellowish hue, although i did download led tester from the market to make it was working and can display all the colours i can throw at it. I don't think you can set custom colours though I am sure a rom will be baked soon with that option though.

Try Blink: https://market.android.com/details?id=imoblife.blink&feature=search_result#?t=W251bGwsMSwyLDEsImltb2JsaWZlLmJsaW5rIl0.
This worked well on my Nexus One.

Blink does not work, but application called Light Flow works just fine.

Blink does not work unfortunately.

I've had Blue and Green notifications plus the standard white so far - would be nice to be fully customisable as standard though.
Sent from my Galaxy Nexus using xda premium

gambiting said:
Blink does not work, but application called Light Flow works just fine.
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Cool. Glad you could find one that works!
I'll remember light flow for when I can get my hands on one here in the US.

when mine blinks white it looks more like a mix of colours rather than all white, like green at the bottom, abit of red in the middle and like a purple colour towards the top. is this just mine or is everyones like this?

Tung_meister said:
when mine blinks white it looks more like a mix of colours rather than all white, like green at the bottom, abit of red in the middle and like a purple colour towards the top. is this just mine or is everyones like this?
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mine is as well, lets hope this is normal

Light Flow is free and works really well. Lets you customize notification colours, sounds, duration etc from within the app... and it doesn't require root.

majikdragoon said:
Light Flow is free and works really well. Lets you customize notification colours, sounds, duration etc from within the app... and it doesn't require root.
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You sure, it asked me for root when I had it, and I believe it was stated in it's description too, even though it adds itself to the accessibilities.

Surprisingly it works fine without changing anything other than the colors wanted
no root required

Tung_meister said:
when mine blinks white it looks more like a mix of colours rather than all white, like green at the bottom, abit of red in the middle and like a purple colour towards the top. is this just mine or is everyones like this?
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That's because its and RGB led and to make white, all 3 colours will be on
Sent from my Galaxy Nexus using Tapatalk

Light Flow is amazing, thanks
Sent from my Galaxy Nexus using XDA App

Evostance said:
That's because its and RGB led and to make white, all 3 colours will be on
Sent from my Galaxy Nexus using Tapatalk
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ye I understand that I've experienced RGB LED's before but not with such bad colour bleed through so I was just checking it wasn't my device that was at fault

majikdragoon said:
Light Flow is free and works really well. Lets you customize notification colours, sounds, duration etc from within the app... and it doesn't require root.
Click to expand...
Click to collapse
It only works while the program is running or "minimized". If you close it in task switcher it stops working.

Thanks for that, seems to work perfectly.

Tung_meister said:
ye I understand that I've experienced RGB LED's before but not with such bad colour bleed through so I was just checking it wasn't my device that was at fault
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I have noticed the same colour bleed and it has a very very slight flicker as the light pulses too.
I'm glad this isn't a fault, though I would feel better if other people who read this could just confirm their Galaxy Nexus does the same thing??

I can see the three distinct colours, yeah. It's almost like they have separate R, G and B LED's on the circuit board really close together instead of one RGB one. If you get my drift. Doesn't bother me though.

jmbillings said:
I can see the three distinct colours, yeah. It's almost like they have separate R, G and B LED's on the circuit board really close together instead of one RGB one. If you get my drift. Doesn't bother me though.
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Thanks for the reassurance buddy!

[Q] Is Your LED Notification Light Prismatic?

I've had two GN's. I swear my first one had a pure white LED notification light. This new one is prismatic. Red, blue, white. It's a whole bunch of colors melded together.
Does anyone else have the same or and I going color blind?

It's an RGB LED. Just like a white pixel, the white LED is made up of full-intensity red, green, and blue LEDs. That's what you're seeing is the individual LEDs.

copkay said:
It's an RGB LED. Just like a white pixel, the white LED is made up of full-intensity red, green, and blue LEDs. That's what you're seeing is the individual LEDs.
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I understand that. What I'm saying is one my first one, when the notification light was engaged, it was pure white. On this unit it's prismatic.
Am I going color blind? Is my unit defective? Should I be concerned? Or should I shut my giant pie hole?

bmstrong said:
I understand that. What I'm saying is one my first one, when the notification light was engaged, it was pure white. On this unit it's prismatic.
Am I going color blind? Is my unit defective? Should I be concerned? Or should I shut my giant pie hole?
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Mine is prismatic mate, little tinges of different colours

jameslfc5 said:
Mine is prismatic mate, little tinges of different colours
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Same here, and same with my buddy's

Yeah, I think the "rainbow" effect is the norm. Not sure how your other one didn't do it. Maybe it was an earlier batch that had a different LED, but that seems unlikely (mine was pretty early too, I was one the first to get a retail one from P4U...)

jmbillings said:
Yeah, I think the "rainbow" effect is the norm. Not sure how your other one didn't do it. Maybe it was an earlier batch that had a different LED, but that seems unlikely (mine was pretty early too, I was one the first to get a retail one from P4U...)
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My first was one from the early Expansys shipments. This one came yesterday. Whew! Thanks guys, really started to freak me out.

bmstrong said:
My first was one from the early Expansys shipments. This one came yesterday. Whew! Thanks guys, really started to freak me out.
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Also I should note that mine is prismatic when I look at it, but when I "notice" the notification it looks pure white because I'm not focused on it. Maybe it didn't strike you as an oddity before so you didn't really focus on the color too much (I didn't really until I read this thread and then realized "oh yeah, it is multi-colored")?

s.m.knipe said:
Also I should note that mine is prismatic when I look at it, but when I "notice" the notification it looks pure white because I'm not focused on it. Maybe it didn't strike you as an oddity before so you didn't really focus on the color too much (I didn't really until I read this thread and then realized "oh yeah, it is multi-colored")?
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LOL, it's because humans are color blind in peripheral vision
---------- Post added at 02:23 PM ---------- Previous post was at 02:22 PM ----------
btw, mine does the same thing, sometimes it's white, sometimes it's the rainbow
can't put my finger on when and why different colors occur though...

Mine is white all the time. Uh oh, I got this one from the first batch off of Expansys USA.

You've probably already done this but you could use Light Flow to test it

Indeed, I tried Light FLow to no avail...

tk123456789 said:
Mine is white all the time. Uh oh, I got this one from the first batch off of Expansys USA.
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Click to collapse
Dude, thanks for posting. I'm not completely crazy!

Mine is white when I receive a call, and yellow-esh for all other notifications

I noticed this the following day of receiving my phone (Nov.26= first batch)
The affected colors are: (White, Yellow, Orange, Purple, Cyan, Magenta) while I don't find any problem with Red, Green, Blue. Of course that is because it is an RGB LED.
I'm using LED Color Tester
p.s. It is funny because an hour ago, I was checking youtube to compare my LED with the ones in the few videos demonstrating this feature.
Thanks for posting and sharing your concern (I'm lazy @ posting)

[Q] LED Notification light defective??

The other day I noticed that my once stock white colored notification LED was acting strangely. It now is multicolored and seems to have a slight flicker when it goes off. I went through Samsung US support steps, removed apps, then full factory reset. Still same problem. I installed Light Flow and tested all colors. Most work but still with a bit of a flicker. White is not working. It displays in three colors, yellow pink and green/blue? I suppose my LED has broken. Has this happened to anyone else? Is there a solution? Samsung US will not support the repair as it is an international GSM phone.
Thank you.

casbar12 said:
The other day I noticed that my once stock white colored notification LED was acting strangely. It now is multicolored and seems to have a slight flicker when it goes off. I went through Samsung US support steps, removed apps, then full factory reset. Still same problem. I installed Light Flow and tested all colors. Most work but still with a bit of a flicker. White is not working. It displays in three colors, yellow pink and green/blue? I suppose my LED has broken. Has this happened to anyone else? Is there a solution? Samsung US will not support the repair as it is an international GSM phone.
Thank you.
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Click to collapse
Yeah white isn't really white, its a combination of three colors. Its normal.. no biggie
Well mine is also like that..
Sent from my Galaxy Nexus

I have had my phone since January and it was always a white notification. My old Nexus One was also always a plain white notification. I am pretty sure thats what stock Android intends it to be. The multicolored just started. Either way Light Flow when set to White should display a white notification but it cannot. I am almost certain my LED is defective. Anyone else?

Ahmato27 said:
Yeah white isn't really white, its a combination of three colors.
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As proved by Newton:
White light is the effect of combining the visible colors of light in suitable proportions (the same present in solar light).
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Click to collapse

Ok, so... no help here. Thanks anyway, guys.
I sure wish my LED could be fixed. <head down>

Everything you describe is normal.
You probably just never noticed it before.

I actually did notice it and that is why I have posted here. The notification light is supposed to be white. Not multicolored. I know this phone like the back of my hand. The led has changed.

Mine has been like exactly what you've described on both Nexus' that I've owned.
Sent from my Galaxy Nexus using xda premium

It's a tri-colored LED (red, green, blue).
It displays different colors by mixing those 3 primary colors.
To get white, it mixes all 3.
The 3 LED's aren't close enough together, so around the edges you'll see the individual colors, but in the center it will appear white.
At certain distances/angles/lighting conditions, it can appear almost fully white.
http://www.youtube.com/watch?v=nDrYDjXThLc
If you insist that it was pure white before, then somehow you had a white LED and it has transformed into a RGB LED.
I'm pretty sure no Galaxy Nexus's were shipped with a white LED, and certainly not ones that can transform.

AFAIK
The notification LED at the bottom of the phone has always been a 3 color LED. Red, green and blue. To get white it turns on all 3. Other colors are variations on a theme.

Thank you, terryhau.
My notification light does not look like it does in that video. It is now mostly pink with a green hue no the bottom portion and a purple/blue color in the top left hand portion. It DID NOT used to be like this.
I guess I need to post a pic somehow.

Maybe something like an update or .apk has changed the behavior of the LEDs like reduced the output which would explain why you now see all 3 colors instead of white.

Wilsonium said:
Maybe something like an update or .apk has changed the behavior of the LEDs like reduced the output which would explain why you now see all 3 colors instead of white.
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Click to collapse
I did a full factory reset hoping that may be the case. No luck. This hasn't happened to anyone else?

casbar12 said:
Thank you, terryhau.
My notification light does not look like it does in that video. It is now mostly pink with a green hue no the bottom portion and a purple/blue color in the top left hand portion. It DID NOT used to be like this.
I guess I need to post a pic somehow.
Click to expand...
Click to collapse
The video shows that it is not pure white, but a mixture of colors. Kind of hard to see because of the bad camera.

terryhau said:
The video shows that it is not pure white, but a mixture of colors. Kind of hard to see because of the bad camera.
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Click to collapse
Yes. And in the video it shows what my led looked like about three days ago. It no longer displays that way. Now the three colors are glaringly obvious with a bit of a flicker as it fades out.

I am having the same issue. I have a galaxy nexus from sprint and the play store. the sprint one is perfect. all colors requiring a mix of colors show perfectly like pink, magenta, lime etc. However the play one does not. its almost like its off center so with lime you will see a bit of green and then orange on one side. Pink is slightly pink on one section then almost white every where else. Purple is purple and then has a nice section of blue on one edge.
So my question is those who have replaced your screen is the led attached to it or is it part of the speaker daughter board?

My led is darned close to white (accepting Newton's physical laws etc.). I'm thinking that if yours has changed then perhaps it's damaged, but perhaps your rom settings have (been) changed and your notification colour is now set differently (by default). What rom are you using?
I'm using CM9, which nominally allows me to have notifications in different colours for different apps. I find when I pick colours from the chooser, though I'm meant to have complete control over the colour, in reality I can get white, red, blue, green, and different rotations of rainbows.
Clarification: when I say I can get 'red, blue, and green', I mean properly: I get a solid circle of whichever one of those colours I'm aiming for. But anything else (e.g. yellow, orange, cyan, magenta, lilac, etc.) will be a the chosen colour in a small part of the circle, and an array of all the other colours elsewhere in the rest of the circle.

i can get all those colors too... but only on a portion of the window. white will show green, blue and pink on the side.. but not just around the edges. I think this is what the OP was talking about. I honestly do not think its a software issue as i am running lightflow on both of my nexus's and one is has run cm9 and AOKP witht he same results. It has to be a hardware issue. So if any one can answer this, is the LED attached to the screen or the lower speaker daughter board?

notification led.?

Is the notification LED single coloured...??
If yes.... Is it clearly visible on a white mobile...??
(Tried to order black one but couldn't get it..!!)

I don't know about white model but yes it's confirmed that LED light is only white color and it's clearly visible in black version.

kiran G. said:
Is the notification LED single coloured...??
If yes.... Is it clearly visible on a white mobile...??
(Tried to order black one but couldn't get it..!!)
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Its visible in black model as i have got one. But i feel the led is not that bright. Its on the dimmer side. Plus no rgb on such a good device. Disappointed for the led.

raza_maestro said:
Its visible in black model as i have got one. But i feel the led is not that bright. Its on the dimmer side. Plus no rgb on such a good device. Disappointed for the led.
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Yea...very disappointed...?.....i have got white one and i dont know whether it will be visible or not...yet to receive my device

kiran G. said:
Yea...very disappointed...?.....i have got white one and i dont know whether it will be visible or not...yet to receive my device
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Well with the kind of low intensity the led has, the chances are slimmer on a white phone, of course unless its night.