Tuesday , January 26 2021

Phone applications that use black instead of white use less battery life

The Samsung Galaxy S9 / S9 + can not record 4K video at 60 fps as long as the iPhone X.
The Samsung Galaxy S9 / S9 + can not record 4K video at 60 fps as long as the iPhone X.

Image: lili sams / mashable

Now we have evidence that applications are leaking less of the phone's battery life when using darker colors such as black and gray.

At a recent Android Dev Summit session (through SlashGear), Google unveiled what I have long suspected: the colors used in applications have a direct impact on the battery life of smartphones, and white or brighter colors are a leak great.

Using an original Pixel phone, Google tested different ways in which the phone lowered the battery life. Brightness was, of course, one of the most prominent factors; everyone knows that the more you illuminate the screen, the faster the battery is downloading.

However, the most informative news in the session relates to the use of color. As many of us, technicians already know in phone display techniques, already know, switching to the night mode of a phone (if one has one) helps save battery life.

Although not seen in LCD screens where the full screen is backlit, the energy savings from OLED displays (such as Samsung phones, Pixels, iPhone X, XS, XS Max etc.) are much higher.

This is because OLED screens are not backlit in the background like LCDs, with a uniform level of brightness that illuminates all the pixels. Instead, each pixel in an OLED display has a turned on and off state. As such, the pixel flashes only and uses energy when it has a different color than black. A black pixel is "off" and that's why blacks are so deep on OLEDs compared to LCDs – because they are not even lit.

So, indeed, it should not be surprising that the applications that are switched to night / dark mode, which often use more black or dark gray, will reduce the battery discharge rate of the phone.

I encourage you to switch to night mode (where available), not just because your phone will last longer, but because it's easier for your eyes. Twitter with a dark theme is less dazzling than a day's theme that is mostly white, especially when you look at it in darkness or in places that are not bright (such as bars, restaurants, etc.).

Google, in turn, did not exactly contribute to preserving battery life on Android with the design of materials for all of its applications. In an attempt to create a consistent and consistent UI for all its applications and services, Android application creators have gone overboard with white "white space". As a result, their applications suck more power than they need.

The Google and Android application developer key is simple: use more black and darker colors. It's good for saving energy and darkness looks much better in my opinion.

Can we please get the right way for iOS?

Can we please get the right way for iOS?

Image: lili sams / mashable

But not just Android phones that can benefit from black embrace in applications. IOS developers should do this as well. With the help of iPhone X, XS and XS Max devices, all using OLED screens, there is an opportunity to make beautiful applications that are also good for battery life.

Like someone who used dark mode whenever possible in applications like Twitter and Apollo and using a black monitor on my home screen, I always want more applications to embrace aesthetics. Now that there is evidence that it actually prolongs the battery, there are several reasons to make dark mode an option.

If Apple advances and takes the lead with dark mode in its iOS default applications, it will also stimulate other application developers to follow suit. Apple has already taken the child's steps with the dark mode on MacOS Mojave and is glorious.

It's time for the company to do the same thing with iOS. I always found it odd that some iOS applications are dark (eg Clock, Clock, Compass, Activity, Calculator), but others are not. Perhaps in iOS 13 Apple can finally shut down all applications. If there is one thing IOS 13 should have, it is.

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