How much battery does an Android phone’s Always On Display use?

Lauren Stephen
4 min readDec 4, 2018

One feature unique to Android phones (vis a vis iPhones) is the Always On Display. AoD keeps a small portion of the screen turned on even when the phone is asleep, to display certain types of information. By default this is usually the time, date, and battery level as well as certain types of notifications. Precisely what the AoD shows can be customized in various ways, and the feature has been getting more sophisticated with new versions of Android.

I’ve customized my Always On Display so that the clock face looks sort of like the style of clock radio, the ones with the red glowing digital numbers, that people had in the 80s and 90s. This makes it a sort of familiar face when I wake up in the middle of the night and want to check the time. There are some nice advantages to having an Always On Display, and for me one of them is being able to see my phone in the dark, or if it is resting against a black surface. My S7 is black, and I tend to prefer darker cases. I like how my phone looks like the monolith from 2001: A Space Odyssey (I mean complete black), but it can be nearly invisible in low light if it’s resting on a dark surface like my couch. Unless the AoD is turned on. Then the red digital clock face visibly pops out in the dark.

The AoD on my Galaxy S7 looks a bit like a 1980s digital clock

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Lauren Stephen

Writer, editor, technical writer, part-time lecturer, and semi-professional stand-up comic based in Hamilton, Ontario, Canada.