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Phone's Dark Mode Doesn't Necessarily Save Much Battery Life

By Tech Explorist

July 30, 2021

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Purdue University researchers found in a recent study that putting a smartphone in dark mode is unlikely to save significant battery life.

The researchers built tools to measure more accurately how much power the phones' pixels draw, and examined six of the most-downloaded Android phone applications on Google Play; they then analyzed dark mode's effects on 60 seconds of activity within each app on the Pixel 2, Moto Z3, Pixel 4, and Pixel 5 phones.

The researchers' Per-Frame OLED Power Profiler technology showed that switching from light mode to dark saves just 3% to 9% power on average for models featuring organic light-emitting diode (OLED) screens.

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