How Black Wallpaper Can Save your Android Battery

Posted by mistermobile on Dec 27, 2015
Filed under: Android Tips

How Black Wallpaper Can Save your Android Battery

LCD screens

LCD stands for Liquid Crystal Display and it’s the same kind of technology you’ll find in your televisions, monitors and so on. As the name suggests, Liquid Crystal Displays are actually crystals, and as such, they don’t emit light of their own but rather transmit light from a light source behind them.

This means that even if you’re looking at black on your smartphone or tablet screen, it is actually black lit up from behind. Therefore, LCDs don’t really display ‘true’ black. The Nexus 5 has an LCD display, as does the LG G3 and the Xperia Z3.

LCDs are also quite power hungry, because as every pixel needs to be illuminated whenever the screen is in use.

AMOLED and OLED screens

AMOLED stands for Active-Matrix Organic Light-Emitting Diode and it is also used for televisions screens but more notably, for smartphones. OLED displays are similar, but do not use an Active Matrix.

Samsung displays, for example, are usually AMOLED: the Galaxy S5, Galaxy Note 4, Galaxy S6 and Galaxy Note 5 all use an AMOLED display. The LG G Flex 2 uses a Plastic OLED display and the Google Nexus 6 uses an AMOLED screen.

The screen is made up of organic material that actually produces light when a current is passed through it – electroluminescence. AMOLED displays are easier on your battery because every pixel is not always lit up. They also show ‘true’ blacks because there is no back-lighting.

Use Black wallpaper now

To download a straight black wallpaper for your smartphone background, hit the link here, and don’t forget to change your app themes to be as dark as possible to enhance the battery-saving effects.

You can also set a darker system-wide theme for your device, change your screen timeout setting to be as short as possible, enable power saving mode, turn off auto-brightness and see how great the battery savings are.

Of course, your battery is used by more than just display, so results will be dependent on your phone usage habits, processor and other variables, but the savings will still be worthwhile.


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