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How to make Android look sexy on a black handset!


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#16 -Razorfold

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Posted 17 February 2013 - 23:27

HTC has used amoled on some and Nokia no longer use it on their top of the line phone since SLCD is better.

Um no. Both screens have their drawbacks and their benefits. The 900 screen has far superior blacks and vibrant colors but suffers from over-saturation and viewing angles. The SLCD in the 920 doesn't have deep blacks and the colors aren't as vibrant but the viewing angle is better and readability in sunlight is better. It's a matter of preference rather than one tech is better than the other.

Doesn't matter what kind of screen you got. The brighter it's on, the more battery it uses.

AMOLED screens use next to 0 power to display the color black, however they use a lot more to display white.


#17 Detection

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Posted 17 February 2013 - 23:28

How do you get wifi as number 2, have wifi on all the time, and it's less than cell standby. Right in between that and phone not in use which is about the same as google service.


Thats what battery settings in JellyBean report, and droid has always reported that since Honeycomb

This is a tablet though, so no cell, but I definitely see at least 50% better battery life with brightness down to half

#18 Pupik

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Posted 17 February 2013 - 23:32

Brightness has zero to do with background color or wallpaper though.

You're crazy, man. The darker the color the screen has to display, the less brightness has to be applied for it to properly display the color.
That's why dark wallpapers recommended to save battery life. Has fewer bright colors to stress the screen.

#19 Detection

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Posted 17 February 2013 - 23:35

How do you get wifi as number 2, have wifi on all the time, and it's less than cell standby. Right in between that and phone not in use which is about the same as google service.


Just booted the tablet up, but this is the same trend no matter the uptime

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#20 tsupersonic

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Posted 17 February 2013 - 23:35

I use dark wallpapers because a) it's easier on the eyes and b) battery life (using AMOLED).

#21 HawkMan

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Posted 17 February 2013 - 23:39

Um no. Both screens have their drawbacks and their benefits. The 900 screen has far superior blacks and vibrant colors but suffers from over-saturation and viewing angles. The SLCD in the 920 doesn't have deep blacks and the colors aren't as vibrant but the viewing angle is better and readability in sunlight is better. It's a matter of preference rather than one tech is better than the other.


AMOLED screens use next to 0 power to display the color black, however they use a lot more to display white.


The ONLY advantage to amoled today is the black levels, which gives it "dynamic" contrast. SLCD has better colors, viewing angles, daytime viewing and real contrast

You're crazy, man. The darker the color the screen has to display, the less brightness has to be applied for it to properly display the color.
That's why dark wallpapers recommended to save battery life. Has fewer bright colors to stress the screen.


Ugh, no. ONLY if its amoled, on any other screen the light is a uniform LED based backlight on a diffuser plate. Meaning a all black or all white creek use exactly the same amount of power. Theonly thing affecting the power use on a LCD based screen is brightness setting of the screen.

#22 Stetson

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Posted 17 February 2013 - 23:45

You're crazy, man. The darker the color the screen has to display, the less brightness has to be applied for it to properly display the color.
That's why dark wallpapers recommended to save battery life. Has fewer bright colors to stress the screen.


A standard LCD screen (not OLED) has two parts, a backlight and the LCD. If you have a black area on the screen, the backlight doesn't dim because you still need the backlight on to allow the other parts of the screen to show through. To display black, the LCD is just blocking out the light of the backlight in that area.

Some LED TVs can dim part of the backlight in a dark area of the picture, but I don't think any phones can do that.

So really on a phone with an LCD display showing a black screen with the brightness at full and a white screen with the brightness at full should be pretty much the same.

#23 Julius Caro

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Posted 17 February 2013 - 23:47

On LCD, the backlight is ALWAYS on. And to display dark colors, you need to un/twist the crystals to prevent that light from passing on to the front. So technically, black screens on LCDs require more energy than a white screen. I wouldnt say that all black or all white on LCD use the same amount of power. In terms of the backlight, yes, it remains constant (unless you have local dimming), but the liquid crystals are mmm in their default position so you dont use extra energy.

In AMOLEDs, yeah, a black pixel is turned off so it saves battery, and white would use more battery.

Brightness is another thing. On LCDs, a higher brightness means cranking up the backlight. on AMOLED I guess you apply more energy to get brighter pixels.

#24 Growled

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Posted 17 February 2013 - 23:48

I prefer lighter colors and I'll willing to charge every day or so to use them.

#25 Pupik

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Posted 18 February 2013 - 00:43

You're all are crazy, people :) No matter the technology, lower voltage usage always going to be on the side of displaying darker colors.
Displaying lighter pixels (bright colors), is more draining on the battery than to display darker pixels (dark colors). It's like if you light two fires and will want to make the second one brighter than the other one, you'll have to feed it more wood. No other way around it.

#26 Stetson

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Posted 18 February 2013 - 00:51

You're all are crazy, people :) No matter the technology, lower voltage usage always going to be on the side of displaying darker colors.
Displaying lighter pixels (bright colors), is more draining on the battery than to display darker pixels (dark colors). It's like if you light two fires and will want to make the second one brighter than the other one, you'll have to feed it more wood. No other way around it.


You don't understand how an LCD display works. The pixels on an LCD display do not light up, they just let light through. On a phone LCD display there's a single backlight unit behind the LCD that provides all the light. This is the part of the display that uses almost all of the power.

There's one backlight for all of the pixels.

If all the pixels are white, the backlight is on and is using power.
If half the pixels are black and half are white, the backlight is on and using power. The LCD layer is blocking out that light for half the pixels, but the light is still on.
If all the pixels are black, the backlight is on and using power. The LCD layer is blocking out all of that light.

Just because there is less light going to your eyes doesn't mean that that light isn't being generated. It's just being blocked out by the LCD layer to make the 'dark' pixels.

There's no way for the backlight to use a reduced amount of power just because some of the light is being blocked out by the LCD layer. The backlight is either on or off for the whole display and uses power based on the brightness setting.

Edit: To use your analogy, think of an LCD display as a big fire with a stencil (cutout shape) placed on top of it. You look down at the stencil and you see light through the holes and black where the stencil is. No matter what stencil you use, even if it has no holes at all and is sold black, the fire is still going underneath and using fuel.

#27 schubb2003

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Posted 18 February 2013 - 01:06

You're all are crazy, people :) No matter the technology, lower voltage usage always going to be on the side of displaying darker colors.
Displaying lighter pixels (bright colors), is more draining on the battery than to display darker pixels (dark colors). It's like if you light two fires and will want to make the second one brighter than the other one, you'll have to feed it more wood. No other way around it.


So if there are blinds over the fire, only adding fuel makes it brighter if you are looking down on the fire? Opening the blinds would adjust the amount of light coming through much better, more fuel would only add to bleed around the blinds.

#28 Buttus

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Posted 18 February 2013 - 01:07

someone should start a cellphone background thread! post the background and resolution....

i always use dark backgrounds, for pretty much what was posted here

#29 Pupik

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Posted 18 February 2013 - 01:14

Edit: To use your analogy, think of an LCD display as a big fire with a stencil (cutout shape) placed on top of it. You look down at the stencil and you see light through the holes and black where the stencil is. No matter what stencil you use, even if it has no holes at all and is sold black, the fire is still going underneath and using fuel.

You didn't understand my analogy at all. Both fires still use wood while burning. Only the fire that burns brighter, needs more of it.
So if a display needs to make a part of it brighter, it will use more battery power than it uses while the display has less bright colors to display.

someone should start a cellphone background thread! post the background and resolution....

i always use dark backgrounds, for pretty much what was posted here

There's already one on Neowin for that somewhere.

edit: Tried, but couldn't find it.

#30 -Razorfold

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Posted 18 February 2013 - 01:33

The ONLY advantage to amoled today is the black levels, which gives it "dynamic" contrast. SLCD has better colors, viewing angles, daytime viewing and real contrast

Power saving with darker colors, and generally faster response time.

Viewing angles mean absolutely nothing on phones since 99.99% of the time you're looking at your phone head on. SLCDs may have better/realistic color reproduction but colors on AMOLED look better because of the over-saturation. Hence why I said it comes down to personal preference. Some people like the way the colors on amoleds are more vibrant, some people prefer realistic colors.