Blue filter app on AMOLED Displays - General Questions and Answers

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

Related

Screen text mode: What's best to limit battery consumption?

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.
Click to expand...
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.

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?

Notification LED

Yo can anyone fill me in on this ^ I watched loads of reviews but not one person goes into detail about it, Ino Notification lights aren't anything new so it makes sense they wouldn't mention it but what about the people who are new to Sony phones. Samsung is all I no mostly the note series.
Anyone who owns the phone up for making a quick video on the Notification LED? I'm mainly interested in what colors it can be because on my current phone (Note 3) it can only be Red, green and Blue and i think White. but apps like light flow let me mix these colors together to create new colors. However the new colors dont look very good. Years ago I had a Sony walkman phone it wasn't Android but it lit up at the sides when I got a notification and it could be all kinds of colors, real colors! It was well cool. I'm hoping the Z3 LED will be just as cool.
Hopefully that made dome sense.
Haven't got the time to make a video but I installed lightflow lite and created a custom notification setting.
Sure enough the led tries to match the settings I choose under custom color (although not 100% accurate but still).
The notification led on this phone is pretty small, especially compared to the nexus.
Hope that helps.
..via Z3
I haven't paid too much attention to the led but i have seen it green, blue, and i think amber also
Notification LED is a full color LED, color rendition is so lala, not too precise.
Especially white has a bluish tint.
Cheers everyone

[Q] Lightbleeding across the top of the display

On my Nexus 5 I have a slight lightbleeding on the top of the screen. It goes all the cross the top. Have anyone seen this on their device?
The weird thing about it is, that it is almost invisible when the topbar is black, but very much visible when the topbar is e.g. blue, red, yellow, …
I'm not even sure what it is, maybe it is just a nocebo effect, I think it is there so it is and it is annoying the hell out of me.
I attached a photo of it, It was made next to a window with low backlight.
Light bleed

Adaptive Display changing white points in different light.

Hey guys, I was using my phone browsing the web when suddenly the white point changed! The screen turned slightly purple and I think it is due to Samsung's adaptive display and my purple LIFX bulbs.
Here is a video link: https://www.youtube.com/watch?v=ujVIFA5LESQ
Any one notice this with their S6? Its running Marshmallow if you guys were wondering.
After seen your video , i tested , and with the purple color in the background , the white colour get a little bit darker , when u look in recent apps it becomes again white. tried with other colors and white didn`t changed.

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