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2 Nexus Ones Side by Side: Significant Difference in Screens!

I found a dead pixel in my first nexus one so I decided to swap it. The new one arrived today and I played with them side by side. The screens are very clearly different between the two. With everything set up identical and the same brightness setting, the one with the dead pixel is very clearly washed out looking with a greenish bluish tint to it. I actually noticed this somewhat before receiving the swap but thought it might be my imagination (the screen didn't seem as clear as my previous t-mobile version.) However, with them next to each other the difference was night and day.
I tried to get a good pic of it, but my photography skills are lacking and this is the best I could get. In person the one on the left (new one) is way better looking. The one on the right (sending back for dead pixel) has nowhere near the contrast and feels washed out, greenish, and unsharp.
So to conclude, if you think your screen might not be as as good as it should be, you may be right. I can't help but wonder if the dead pixel was just a symptom of a larger problem with the screen; perhaps the significantly reduced battery life I experience (compared to the t-mobile version I originally had) is also related to a screen issue. Time will tell...
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Update: Here's a better pic. Especially note the green tint and washed out look at the top right where the time is displayed. Look back and forth between them. I edited the color slightly so that what you see more closely resembles what I see. In person the brightness appears the same for both even though the right one looks brighter in the pic.

I agree that the dead pixel could of been part of a bigger problem, but the way the picture came out it appears as if the one on the right is alot sharper.
You should try turning the brightness down on the phones before taking the picture. Also did you lose a flash, or is this effect just from it being at 100%brightness?

I know it looks that way, but it's just a crappy pic. I'll try again later today before I send the phone back. I didn't use flash, and screen brightness had no effect on the difference between the phones.

I actually prefer the the one on the right. The one on the left looks way too reddish/pink. Have you done a side-by-side comparison on the lowest brightness setting and going to a white screen page like Google?

the one on the right kind of looks like the color on a droid screen

The one on the right is far more color accurate. The one on the left looks like my T-mo launch N1, which has blown out reds and makes everyone's faces red in pictures that I take until I move them to a PC with a proper screen.
Color accuracy should be preferred over "pop" and "vibrance", IMO

bradsh1 said:
The one on the right is far more color accurate. The one on the left looks like my T-mo launch N1, which has blown out reds and makes everyone's faces red in pictures that I take until I move them to a PC with a proper screen.
Color accuracy should be preferred over "pop" and "vibrance", IMO
Click to expand...
Click to collapse
Agreed, I wonder if HTC received a delivery of defective AMOLEDs from Samsung and just decided to use them rather than return them...

I had a similar issue. My old Tmobile N1 had a the blueish tint (like the picture on the right) but I had a dead pixel.
My new Tmobile N1 has the purple tint (like pic on left) and has no dead pixels yet. I've had them equal amount of time now.
I wonder if perhaps the old screens were having dead pixel issues and HTC decided to go with some different screens?

It could also just be the backlighting. The LED that's being used probably just emits at a higher temperature, eg more bluish-white.

erikikaz said:
It could also just be the backlighting. The LED that's being used probably just emits at a higher temperature, eg more bluish-white.
Click to expand...
Click to collapse
With AMOLED there is no backlighting. Each pixel is its own LED, red green and blue ones, emitting its own light.

I've taken more pics at different light levels. Here's one with the brightness set all the way down. I edited the colors slightly so that what you see more closely resembles what I see in person. The left one does not have a purple or red tint; its colors are correct. The right one definitely has a green tint and is washed out looking. Also, in person the brightness of the two appears the same even though my camera picked up the green tint of the right one making it appear brighter in the photo.
Look at the top right where the clock is displayed to really notice the green tint and washed out look. Look back and forth quickly at the time...

My phone had the same effect of the left one, that is when I first got it. Over time, it starter to slowly lose that red/purple like tint, and the colors became more sharp and correct.

i think amoled screens are somewhat of an organism

I just got my replacement phone from HTC due to dust under the screen on my original N1 (purchased second day of release).
I noticed that the newer phone had quite a few differences, including the quality of the screen. See my post about my observations here: http://forum.xda-developers.com/showthread.php?t=655966

INTERESTINg..How much more battery life did you get with the new one?

CM7 Automatic backlight settings

There has been a lot of posts under the CM7 nightly thread about people not being happy with the auto brightness settings on the Droid Incredible, I was one of these people till I decided to take sometime and figure out how it works and now I would like to share the setup I've came up with. I'm sure that not everyone will like my setup, but I do think it's much better than the current defaults so hopefully it'll make some people happy.
I started out with a list of goals I wanted achieve for my setup and I think I did pretty well.
1. It needed to be easy on battery life
2. It has to work in all lighting conditions. It must be easily read in really dark rooms and in bright sun light.
3. I didn't want the screen brightness to "jump" it had to be subtle.
4. It has to be responsive to changing light conditions.​
I want to give credit to byrong because with out his testing that he published here, I'm not sure if I would achieved all of my goals especially when it came to battery life. Also to the entire CM team, you guys are great and its much appreciated that you guys give us such support for the latest android OS.
Below you'll find all my settings, please feel free to comment and let me know how it works for you. Please remember I've only tested these settings in CM7 and that I have an AMOLED Incredible so I'm not sure how these settings work for people with the SLCD Incredible.
Settings>CyanogenMod settings>Display>Automatic backlight
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Updated:
[Standard Disclamier: I take no responsibility for any damage your device may incur due to rooting, flashing custom roms or anything else you may do to it.]

Thanks for showing your entire setup. A lot of people have been sharing their levels without sharing their other settings.
I've been meaning to mess around more with the CM7 auto-brightness. The one day I tried it, I became very frustrated: it seemed that the sensor was only detecting a few ambient brightness levels and was especially sloppy in dark areas.
When I get some more time, I want to try out your settings and see how they work for me.
Hm, looks like I'll have to wait until tomorrow to hit the Thanks button; apparently I've already clicked it too many times today

NP at all.
You are absolutely right the sensor itself only picking up a few levels; 160,225,640,1280,& 2600 to be exact, from what I can tell. Thats why having filtering on is so important.

brightness levels have been a pretty frustrating subject for me, keeping the brightness to max is what I usually have to do, but its an obvious battery killer. Giving this a shot. thanks for the info!

Any update guys?? I want to gauge how well it is working for other people. For me its perfect I have not had to tweak it one bit yet.
Sent from my ADR6300 using XDA App

I went back to manual levels.
The filtering definitely helps, but unfortunately only delays the inevitable. They are just averaging the current raw readings against previous raw readings. This creates in-between values as you shift from one ambient lighting condition to another, but since the raw sensor only reads a fixed number of levels, even the filtered value will eventually shift back to one of the fixed raw levels.
userjf and slayher have been experimenting with ways to add more raw light levels via a custom kernel. Seems that the max number of readable levels is 10. Hopefully that will become a more commonplace mod that will make the auto-brightness more usable.

I was wondering how you got all those different levels to display? mine only displays about 5 is that because I am running a SLCD dinc versus an AMOLED dinc

Click the "set number of levels" button at the bottom, then input the number of levels you would like...

I will try these levels out, looks like they may work great, I will report back n let you know...
Sent from my ADR6300 using XDA App

I am giving these a try as well. The automatic brightness has been generally dissapointing on my Dinc with CM7 thus far

These settings are an improvement but they are not as good as they used to be on CM7 RC1 & the early nightlies. In the final version of CM7 they increased the brightness scale, see this thread for more details, you can see it now scales to 10240 instead of 2600 which makes my settings not as effective, it stay brighter longer than they did before but at its still an improvement of the defaults since the levels don't jump and down often. I recently upgraded to a Tbolt, so I don't have my Inc handy, once I do I'll see if I can dig up my modified settings for the final version of CM7 and post them here.

I am running CM7.0.0 if it helps
Nothing in .0.1 or .0.2.1 or .0.3 was compelling enough for me to go through reconfiguring everything.

I have been using these settings for a couple of weeks now and I am very satisifed withe the results . It helps saving the battery by dimming the screen in doors or low light situations and brightens the screen in high light situations making it easier to see the screen in sunlight

Works well for me. Much better than the stock levels.

I agree, these settings are much much better than what's in the latest nightly! Great work!
Sent from my ADR6300 using XDA App

The best settings I've found to date! Works as needed. Thanks for your time and effort figuring these settings!
sent by 1 of the many droids

Ok, I'm going to assume for a moment (yes, I know what happens when you assume) that I have something not set right. I have my settings exactly like the ones in the updated screenshot, yet my back light stays at a very low setting and never changes. I have the auto back light box checked in my settings, but I'm still not getting any brightness changes from one lightning environment change to another. I'm running CM7 RC3, no nightlies (which may be the problem). Not sure which screen I have but I will research how to tell.

Here are my settings on CM7. They seem to work for me pretty well except in bright daylight... This setup keeps my battery for quite a long time, even if I use it a bunch.

ucluglee said:
Ok, I'm going to assume for a moment (yes, I know what happens when you assume) that I have something not set right. I have my settings exactly like the ones in the updated screenshot, yet my back light stays at a very low setting and never changes. I have the auto back light box checked in my settings, but I'm still not getting any brightness changes from one lightning environment change to another. I'm running CM7 RC3, no nightlies (which may be the problem). Not sure which screen I have but I will research how to tell.
Click to expand...
Click to collapse
Make sure Automatic Brightness is checked in Settings->Display->Brightness or Automatic Brightness will not work at all.
PS: This came in handy tonight when I did a clean install of CM7.

Click the "set number of levels" button at the bottom, then input the number of levels you would like...
okey i'll try it help for my battery
thanks

DSLR Photo Illustration of visible screen burn + ink marks issue

Hey xda members,
just had a bit of spare time so I decided to make some photos of my GS2 while displaying a totally black screen.
Normally you can only see these "effects" when you're in a completely dark room while looking at the GS2 being the only light-emitting source through its display.
Note: The actual purpose of this thread is to educate those people who can't imagine what burn-in/ink marks look like in reality. That's it, just plain visual information.
So I hope this isn't an issue even if there may already be a similar thread
I made some of the photos with the roomlights turned off and others with a very dim light.
The photos were shot using a Nikon D3100 DSLR with long exposure/high aperture settings.
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As you can see in the first photo (below), even if the GS2's display shows a completely black image, which should result in a black display (OLED = pixel off) it shows weird marks and still emits a tiny amount of light.
In the second photo I have marked all the relevant weird spots (including screen burn-in caused by grey status bar [see below, marked by arrow])
The OLEDs in the burn-in area seemed to wear out faster because of the static grey shade it was displaying all the time thus resulting in this permanent color change in the affected area.
This burn-in was apparently caused by this theme which I was using for several months. As you can see, even the status bar in a dark grey shade can cause burn in.
A couple of more photos (with different white balance):
See below for photos in full resolution:
Hope this helps in any way and gives those people an impression who can't really imagine how screen burn-in can be caused and how these display issues (ink marks) actually look like when you capture them properly.

Very interesting indeed. Thanks for the great images, it's certainly an eye-opener to one of the main drawbacks of S-AMOLED screens.
Regards.

How long have you had your phone?
Sent from my GT-I9100 using Tapatalk 2

runedrune said:
How long have you had your phone?
Sent from my GT-I9100 using Tapatalk 2
Click to expand...
Click to collapse
Roughly about nine months, bought it in October 2011.
Sent from my SGS2.

Hope this is no news? Every AMOLED burns in (like crazy). Been doing that since the first models were on the market.
Every SGS2 has it, whether people say yes or no. On my SGS2 it was clearly visible after around six months. Knew it beforehand so it was no biggie/surprise.

Pfeffernuss said:
[...]
Every SGS2 has it, whether people say yes or no. On my SGS2 it was clearly visible after around six months. Knew it beforehand so it was no biggie/surprise.
Click to expand...
Click to collapse
Yeah, also knew it before buying but I never thought the burn-in would look like that so I thought I'd share my experience with the world
While it does look pretty bad on the photos, you can't really see these issues when the screen is turned on with decent brightness, so it's no issue for every day use, but it would be interesting to know how the burn-in looks like if you use your phone for example 3 years.
Still, it looks already really horrible after 9 months of use when you look at the photos. I hope the OLED-technology makes a giant leap forward in the next years so one day these display issues will be a thing of the past.

thanks for the images, i find it disgusting to have that burnt in on a topline expensive phone in short time.
this is my first amoled phone so i dont know what to expect after a year or so, its bad for those who keep thier phones long term, would like to see how the screen is in 5 years time
is it bad when you watch a movie?

republicano said:
thanks for the images, i find it disgusting to have that burnt in on a topline expensive phone in short time.
this is my first amoled phone so i dont know what to expect after a year or so, its bad for those who keep thier phones long term, would like to see how the screen is in 5 years time
is it bad when you watch a movie?
Click to expand...
Click to collapse
Be sure to hit the thanks button if this thread helped you, thanks
Well, it depends while watching a movie. Sometimes I can see the burn-in in movies with a lot of dark scenes, in other movies this issue is not apparent.
Either way..since I discovered this issue, I cannot ignore it anymore which doesn't mean it annoys the hell out of me but still it's a pity to see the phone 'degrading' already after not even a year and spending a lot of money on it.
Sent from my SGS2.

ya its really annoying especially with my mentality that when I spend a huge amount of money on a tech kit I expect it to give me like 2+ years minimum
Sent from My Samsung Galaxy S2 running Paranoidandroid Rom.What else if not?=P

Lol SAMOLED. That is all.

If B&W Ultra Power Saving is so efficient, why not use as ALWAYS ON SCREEN feature?

If B&W Ultra Power Saving is so efficient, why not use as ALWAYS ON SCREEN feature?
Samsung introduced Ultra Power Saving mode, that's besides the usual turn-some-radios-off, sets TouchWiz into a low-demand black and white mode, most likely undervolting the SoC in the process. Sammy promises an extra day of standby in this mode.
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So how about using the B&W mode for always-on display notifications?
While it's no e-ink display like the back of the YotaPhone, AMOLED can light up subpixels individually, and lower resolution displaying of non-graphic white content with 90% of all subpixels off and SoC at very low voltage could make sense. Especially if the new pixel arrangement is RGBW (I don't think it is for the S5), cause it would mean that of the 4 million sub-pixels, only a small % of 1 million white pixels would be on... we don't need full screen notifications, just part of the screen...
With some further SW tweak, the phone could recognize when is it in pocket (like Moto X) and when on table, so it should only display stuff then the phone is in horizontal position or when you move it etc. With AMOLED advertised for efficiency, wonder why Sammy haven't attempted something like this yet, maybe add an extra low-power chip to handle this little task (and always-on listening).
Thoughts? Potential? Possibilities?

Nobody?

I think the sview cover is probably a better way of doing it. Its so easy to go from low power preview to full functionality

Why do you want a black and white screen on all the time?? What year is it?
Sent from my SM-N900T using Tapatalk

gordonzhao said:
Why do you want a black and white screen on all the time?? What year is it?
Sent from my SM-N900T using Tapatalk
Click to expand...
Click to collapse
For when you are at the last 1% and need that extra juice to establish a conversation with 911 because you hit against a reef coral with your yatch in the bahamas and you are sinking with sharks waiting to eat you.

BoneXDA said:
Samsung introduced Ultra Power Saving mode, that's besides the usual turn-some-radios-off, sets TouchWiz into a low-demand black and white mode, most likely undervolting the SoC in the process. Sammy promises an extra day of standby in this mode.
So how about using the B&W mode for always-on display notifications?
While it's no e-ink display like the back of the YotaPhone, AMOLED can light up subpixels individually, and lower resolution displaying of non-graphic white content with 90% of all subpixels off and SoC at very low voltage could make sense. Especially if the new pixel arrangement is RGBW (I don't think it is for the S5), cause it would mean that of the 4 million sub-pixels, only a small % of 1 million white pixels would be on... we don't need full screen notifications, just part of the screen...
With some further SW tweak, the phone could recognize when is it in pocket (like Moto X) and when on table, so it should only display stuff then the phone is in horizontal position or when you move it etc. With AMOLED advertised for efficiency, wonder why Sammy haven't attempted something like this yet, maybe add an extra low-power chip to handle this little task (and always-on listening).
Thoughts? Potential? Possibilities?
Click to expand...
Click to collapse
You can enable B&W with the normal Power Saving, see @ 18:28:

dandroid13 said:
You can enable B&W with the normal Power Saving, see @ 18:28:
Click to expand...
Click to collapse
True, but not as always-on notifications. It would just make sense on efficient individually lit AMOLED pixel screens.

Making it always On will accelerate AMOLED burn in.
Sent from my GT-S5830 using Tapatalk 2

system.img said:
Making it always On will accelerate AMOLED burn in.
Sent from my GT-S5830 using Tapatalk 2
Click to expand...
Click to collapse
So here's where you are. Can I flash you now?

system.img said:
Making it always On will accelerate AMOLED burn in.
Sent from my GT-S5830 using Tapatalk 2
Click to expand...
Click to collapse
It doesn't have to be always on, it could use the gyroscope inside the phone to know when it is being picked up and will then light up the screen.
Sent from my SGH-I337M using Tapatalk

BoneXDA said:
Samsung introduced Ultra Power Saving mode, that's besides the usual turn-some-radios-off, sets TouchWiz into a low-demand black and white mode, most likely undervolting the SoC in the process. Sammy promises an extra day of standby in this mode.
So how about using the B&W mode for always-on display notifications?
While it's no e-ink display like the back of the YotaPhone, AMOLED can light up subpixels individually, and lower resolution displaying of non-graphic white content with 90% of all subpixels off and SoC at very low voltage could make sense. Especially if the new pixel arrangement is RGBW (I don't think it is for the S5), cause it would mean that of the 4 million sub-pixels, only a small % of 1 million white pixels would be on... we don't need full screen notifications, just part of the screen...
With some further SW tweak, the phone could recognize when is it in pocket (like Moto X) and when on table, so it should only display stuff then the phone is in horizontal position or when you move it etc. With AMOLED advertised for efficiency, wonder why Sammy haven't attempted something like this yet, maybe add an extra low-power chip to handle this little task (and always-on listening).
Thoughts? Potential? Possibilities?
Click to expand...
Click to collapse
S800+ already has co processors and DSP they could utilize. Apparently, aosp is more important.
sent from my sm-9005.

Hoping for a dark theme custom rom

Everything in L is white - bright, blinding, battery wasting white. Dialer, settings, contacts, app drawer. It's too much and doesn't look as elegant as a dark theme.
Hoping that with release of source code, someone will make a dark theme. Will save a lot of battery life as well.

Color does not matter in amoled screens, when it comes to battery.

oneplus said:
Color does not matter in amoled screens, when it comes to battery.
Click to expand...
Click to collapse
??

oneplus said:
Color does not matter in amoled screens, when it comes to battery.
Click to expand...
Click to collapse
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Love the white, looks more professional/sharper, it's about time! The dark/holo looks very dated imo

wtherrell said:
??
Click to expand...
Click to collapse
RedBlueGreen said:
Click to expand...
Click to collapse
It's true (B vs W, not color). Samsung has optimized the AMOLED displays so well that blacks and whites almost use the same amount of power. Check out the advanced reviews of the S4 panel.

Bjray said:
It's true (B vs W, not color). Samsung has optimized the AMOLED displays so well that blacks and whites almost use the same amount of power. Check out the advanced reviews of the S4 panel.
Click to expand...
Click to collapse
Not quite. On AMOLED displays, when you have a black image, those pixels are actually off (or using an extremely low amount of power). That's one of the benefits of AMOLED - you get very rich and very dark blacks.

msal said:
Not quite. On AMOLED displays, when you have a black image, those pixels are actually off (or using an extremely low amount of power). That's one of the benefits of AMOLED - you get very rich and very dark blacks.
Click to expand...
Click to collapse
I remember this thread awhile back (~ 4 years ago):
(1) At maximum brightness, screen on for 15 minutes
- Default wallpaper will consume about 5% (from 36% down to 31%)
- Pure black wallpaper will consume about 3% (from 30% down to 27%)
(2) At brightness = 20+%, screen on for 15 minutes
- HTC Black wallpaper will consume about 2% (from 26% down to 24%)
- Default wallpaper will consume about 3% (from 23% down to 20%)
I would say at low brightness, 20% - 25%, you will get 1% up to 2% battery saving per 15 minutes, let say 1.5% per 15 minutes. For 1 hour you will get about 6% battery saving.
Click to expand...
Click to collapse
I have a S4 myself and using a black background doesn't save that much. But yes, there are some savings, but not like what is shown above.
Of course everyone's mileage may vary. My panel might just suck

oneplus said:
Color does not matter in amoled screens, when it comes to battery.
Click to expand...
Click to collapse
While this is untrue, an even more important point that the op brought up is that the white is UGLY...
look at the app drawer on lollipop! It looks like something circa windows 98! Black is not only sleeker, classier, easier on the eyes, it's easier on the battery. The phone has a freaking amoled screen. Cmon google, utilize it!
And before someone responds with "well with L and project Volta its not necessary...". No matter how efficient the os is it'd be more efficient with a less power consumptive display. So it'd be that much more battery life.
But I mean god, its ugly in white...

qwerty12601 said:
While this is untrue, an even more important point that the op brought up is that the white is UGLY...
look at the app drawer on lollipop! It looks like something circa windows 98! Black is not only sleeker, classier, easier on the eyes, it's easier on the battery. The phone has a freaking amoled screen. Cmon google, utilize it!
And before someone responds with "well with L and project Volta its not necessary...". No matter how efficient the os is it'd be more efficient with a less power consumptive display. So it'd be that much more battery life.
But I mean god, its ugly in white...
Click to expand...
Click to collapse
I would have rather prefered the app drawer from kitkat. It looks a lot nicer although you can't go wrong with Lollipop animations.

Ugh, I mean really...

qwerty12601 said:
Ugh, I mean really...
Click to expand...
Click to collapse
Yeah, black transparent or just transparency alone would make it look more aesthetically pleasing.

Agreed. Too much white. I will us nova anyways I'm sure so that won't be a problem on the launcher stuff, but everywhere else it's too damned bright. Hurts my eyes some times looking at web pages with a white background when im in a very dark room. Even with brightness turned tdown all of the way.

You being ignorant about a topic does not make me a troll he said white wastes battery, if you read his sentence. That's not true in amoled screen. White, black, w.e color waste battery the same in amoled.

I'm sure I will get sick of the white eventually, and make my own black theme. Kind of sad that I haven't done any theming since I got rid of my S4.

oneplus said:
You being ignorant about a topic does not make me a troll he said white wastes battery, if you read his sentence. That's not true in amoled screen. White, black, w.e color waste battery the same in amoled.
Click to expand...
Click to collapse
You're information is wildly incorrect. I don't know where you're getting that idea from. A single light bulb in your house that is off will use less energy than a light bulb that is on. There is no disputing that. Its a fact of electricity. The same applies to an amoled screen, if the pixel is off, its not using the energy an illuminated pixel is. Plain and simple.
Here's a link, take a read...
http://www.androidauthority.com/black-amoled-display-power-saving-541984/

Better yet... Google, once upon a time, mentioned theme support. I'd like to see that in Lollipop. That way, whether you want White, Black, Yellow, Green, or even Purple Polka Dots, you can be happy.

jt3 said:
Better yet... Google, once upon a time, mentioned theme support. I'd like to see that in Lollipop. That way, whether you want White, Black, Yellow, Green, or even Purple Polka Dots, you can be happy.
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I do find it odd that they never added the theme engine. It was always open source. Maybe it posed some security risk or performance issue that they didn't like?

Erm no. Black is significantly more power efficient vs white even on modern AMOLED panels.
Just look at the Note 4 tests on Android Authority. 40% or so more battery life when primarily using black backgrounds versus those with colours.
Also, grey/white shows all of the defects in every AMOLED panel. There'll always be a pink or yellow hue to one side, or if you're unlocky, multiple areas. It's not great.
It's still far easier to ignore than the uneven backlighting that still plagues significant amounts of high end LCD panels these days.

jbdan said:
Love the white, looks more professional/sharper, it's about time! The dark/holo looks very dated imo
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i concur. it looks fantastic and much cleaner and a hell of a lot more "grown up" as an OS.