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Can a black background help you save battery?

One of the great evils of users is to run out of battery in the middle of the day. In Android there are several tricks and applications that help us save battery in our smartphone. We have told you many, but one of these tricks is the one that states that a black wallpaper on our smartphone can be useful to save battery but, how much is true in this statement? To get the answer, we have to analyze the type of screen first. Most Android devices feature AMOLED or LCD technology on their screens. Let's explain how this affects the battery.

IPS LCD screens

IPS Led screens have backlighting, something like a layer that is always on and on which the LCD system is located where the pixels determine the color. When the screen is black it is because the pxel blocks the light but the light is still generated by that illuminated rear panel. In a simple metaphor, it is like when we go to the beach and use an umbrella, the sun continues to illuminate although we do not give it directly.

Does a dark background on an IPS LCD screen save battery? Do not! As you can see, the backlight is still working, so the only way to make an LCD screen consume less battery is to adjust the brightness.

AndroidPIT sony xperia xz premium 9440
An IPS LCD screen on the Xperia XZ Premium. / AndroidPIT by Irina Efremova

AMOLED / Super AMOLED screens

These screens are, in general, more energy efficient than LCD screens. The reason is simple. These screens have no feedback, the pixel is the one that emits its own light. In this case, when the screen is black, the pxel is off, therefore, the screen is off and is not consuming energy. With an AMOLED panel it makes sense to use a black background to save battery.

AndroidPIT Samsung Galaxy S9 0782
Samsung, creator of AMOLED screens. / AndroidPIT by Irina Efremova

There are applications aimed at saving batteries in devices with these types of screens, such as Pixel Off Battery Saver. What this app does is decrease the resolution of the screen (if the resolution of the panel of your smartphone is high, you will not notice the difference).




Pixel OFF Battery Saver AMOLED
Install on Google Play

Does it mean that an AMOLED screen is better than an LCD?

Each technology has its public. Broadly speaking, it can be said that IPS LCD technology screens have better viewing angles, better color representation and better viewing quality in the sun. While AMOLED screens, in addition to being more energy efficient, offer very good contrasts and their blacks are truly black.

The choice of a technology from one screen or another will depend on our priorities.

And who are you from, AMOLED or IPS LCD?

. (tagsToTranslate) android (t) battery (t) wallpaper (t) screen technology (t) AMOLED (t) LCD

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