Screen text mode: What's best to limit battery consumption? - Android Apps and Games

Hi,
I've noticed that certain apps offer to show text in "night mode", ie white text over black background, instead of the classical black text on white background.
I'm thinking in particular about ebook reader Aldiko or Email app K9-Mail.
Do you think using the night mode is draining less battery than normal mode? Or it doesn't make any difference?
I'm looking for the optimum setting in anticipation of a long air flight...
Surfinette

Surfinette said:
Hi,
I've noticed that certain apps offer to show text in "night mode", ie white text over black background, instead of the classical black text on white background.
I'm thinking in particular about ebook reader Aldiko or Email app K9-Mail.
Do you think using the night mode is draining less battery than normal mode? Or it doesn't make any difference?
I'm looking for the optimum setting in anticipation of a long air flight...
Surfinette
Click to expand...
Click to collapse
For an AMOLED screen, white on black uses less power. For an LCD, the intensity of the backlight determines the power.
For me, I hate black on white, especially reading books.. I use Endless Reader and it lets me change the fg/bg colors, I actually use a light grey on black since the Nexus One is still a little too bright at night for reading.
As for K9, it has a dark theme, but the emails themselves always seem to be Black on White, http://code.google.com/p/k9mail/issues/detail?id=1674&

For an AMOLED screen, white on black uses less power. For an LCD, the intensity of the backlight determines the power.
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Click to collapse
Sorry for the very noob question: I have a HTC Desire, is it amoled or LCD?

Surfinette said:
Sorry for the very noob question: I have a HTC Desire, is it amoled or LCD?
Click to expand...
Click to collapse
AMOLED, like the Nexus One.

Thank you all.
So it's going to be white on black background for me.

Related

[Q] nokia lumia 800 stripes when black text is on white background

Hello, I noticed the color stripes that appears if the black text is on white background.
They are seen best at low brightness. They can be seen for example by opening office. The strips come from "notes" to "documents" to "locations" for example.
Especially in text documents. I tried to photo this but failed. So I made photoshop picture. Here it is. Is this a defect or a feature of pentile display?
I've noticed this on my Lumia 800.
Never noticed it on my Dell Venue Pro.
never noticed on my omnia 7 too
JusThinK said:
it's having only on office hub, but not on games hub, so I am not sure it's for any screen issue.
Click to expand...
Click to collapse
Because game hub have gray background, not white. Try to enable light theme and you will see stripes everywhere.
Like load"" said, try using the light theme first and see if stripes shows everywhere, if it does, then I assume its the screen itself because of pentile and clearblack, if it doesn't, try hard reset?

screen tint

Hello!!!
Is your screen has pure white colors with a little of bluish tint or a maybe yellow one? Is the white color cold or warm? You can check and see the screen tint if you open the stock lg calculator and look on the top part (the screen where the numbers are written)
Thank you!!!
Yellow here.
mine too I had LG G2 before and it had pure white tone... I prefer the cooler tones. I would like to see more answers....
yellow for me too. Actually, the hue shifts when you place it on a table or so, then spin the unit slowly. It's making me nuts
so all the units of g pro 2 have yellow tint?
yea me too but i love the screen it is great
well if you follow the OP and use the calculator app, and look at the "top part where the numbers are written"... then yes, everyone will be yellow, since the app itself is a yellow/green colour at the top. the bottom part where the numbers you press are, it's a grey colour.
I'm not sure how that is a reliable method to check screen tint.
surely, you'd use turn the brightness to 100% then use the LG "hidden menu" screen test to bring up a white screen to see if it's got any tint? which, when I do, is a pure white screen. no hint of blue/cool colours/yellow.
ray-lee said:
well if you follow the OP and use the calculator app, and look at the "top part where the numbers are written"... then yes, everyone will be yellow, since the app itself is a yellow/green colour at the top. the bottom part where the numbers you press are, it's a grey colour.
I'm not sure how that is a reliable method to check screen tint.
surely, you'd use turn the brightness to 100% then use the LG "hidden menu" screen test to bring up a white screen to see if it's got any tint? which, when I do, is a pure white screen. no hint of blue/cool colours/yellow.
Click to expand...
Click to collapse
on my lg g2 the top part of the calculator was grey and not yellowish. the app itself is light grey on the bottom and darker grey on the top.
Is it possible to adjust the white balance or something else in the displaysettings?

Blue filter app on AMOLED Displays

Hi everyone,
I just installed an app called Twilight which basically applies a blue filter to the display so as result you will have a reddish coloured screen, all this because apparently blue light tires the eyes when using the smartphone in bed, before going to sleep etc etc.
The only thing I am thinking is, will this filter damage the red LEDs?
Sorry if it has been asked before but I wasn't able to find any thread about this.
Thanks

Dark themes on S7 OLED display

Is darks themes for S7 backlighting only text and icons so background staying not backlighted?
Can this sort of themes affect the display after a while?
HeartKiller said:
Is darks themes for S7 backlighting only text and icons so background staying not backlighted?
Can this sort of themes affect the display after a while?
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Click to collapse
Yes, but only if the background is black. The only effect it would have is not lighting those pixels where the black is, which should save battery.
scottjb said:
Yes, but only if the background is black. The only effect it would have is not lighting those pixels where the black is, which should save battery.
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I checked in the dark and I can confirm that dark background is not shining at all so this themes really saving a power.
So will the screen stop to functioning properly after a while if using these sort of themes with a dark background?
HeartKiller said:
So will the screen stop to functioning properly after a while if using these sort of themes with a dark background?
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Click to collapse
No. It actually prolong its life.

Screen burn-in?

Just curious. How many of you are seeing screen-burn in on your phones?
I use CF.Lumen to adjust the screen to be warmer at night. I notice some darker areas/burn-in with CF.Lumen enabled and the screen brightness dimmed to super low levels (using CF.Lumen's built-in darkness slider for Sleep mode)
What I notice is a sort of dark spot at very low brightness, and a sort of dark shadowy line running down the screen close to the left side. It's kinda annoying but I really only see it when I have text on the screen (and I'm trying to read text) at lower-than-stock dimness levels. I'm slowly getting used to it. At first I panicked thinking that my screen had burned in already at a few months of use, but when I have CF.Lumen off and I have the stock brightness slider set all the way to 0, I don't notice any lines or weird dark spots.
Then again, 0 brightness using the stock brightness slider is still VERY bright if you're coming from iOS's Accessibility settings. Android has poor screen filter settings and few good screen filter apps outside CF.Lumen and f.lux and I doubt Android 12 will change that.
So, are any of you experiencing screen burn-in? OLED burn-in is something that always has me worried. I try to avoid OLED phones for this reason, because I'm paranoid.
OLEDs have a finite lifespan. The brighter they burn, the shorter they last.
The higher energy blue emitters have the shortest life span, while red the longest.
Darker screen wallpaper, dark mode and less white icons/headers helps reduce wear.
Use manual brightness control and avoid going over 50% whenever possible. Don't use in direct sunlight... this is a killer.
Move icons and widgets periodically on the homescreen. Avoid prolonged white screen viewing and apps that are dark mode illiterate.
These practices also increase battery life substantially.
Use Screen Test to see if any damage is present.
After over 1.5 years of heavy usage and one battery replacement, my AMOLED display on my Note 10+ shows no signs of damage. How you use it day to day/what you view with it makes a big difference in display longevity.

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