Why and how does a black wallpaper save your battery?

Battery life: AMOLED vs LCD

The vast majority of Android smartphones have AMOLED or IPS LCD screens. We have already explained the difference between the two, in this guide on the differences between the types of screens (LCD, TFT, IPS, etc). Depending on the screen technology used, it may be useful to use a black wallpaper … or not.
To sum up, if your smartphone has an AMOLED panel, then it is better to use a black wallpaper and, if possible, dark themes in the applications and menus. In short, as much black as possible. Why? The principle of AMOLED technology is that LEDs do not emit light when they display black. LCDs do not have this advantage, because the LEDs are on, whether the displayed color is black or not. For IPS panels, the black screen is therefore used for nothing.
According to an experiment made by a user and published on XDA Developers, an AMOLED screen at 20% brightness consumes 6% of battery per hour. With maximum brightness, consumption increases to 8% per hour. Of course, these results were obtained with a screen constantly on.

Where to find a black wallpaper?

To find a black wallpaper, you can do like me and take a photo by blocking the sensor, so the display will be black.

--

--

Hi, My name is Muhammad Usman Babar and I am a blog writer. I love to write about Health, Fitness, and Education. Recently I am writing at www.kidsrush.com.

Love podcasts or audiobooks? Learn on the go with our new app.

Get the Medium app

A button that says 'Download on the App Store', and if clicked it will lead you to the iOS App store
A button that says 'Get it on, Google Play', and if clicked it will lead you to the Google Play store
Muhammad Usman Babar

Muhammad Usman Babar

582 Followers

Hi, My name is Muhammad Usman Babar and I am a blog writer. I love to write about Health, Fitness, and Education. Recently I am writing at www.kidsrush.com.