In smartphones with OLED screens, which are frequently encountered lately, Using dark mode is believed to help increase battery life. This is because OLED screens consume much less or almost no power when displaying black content. Conversely, it is true that individual pixels tend to consume much more power to display light-colored content than they need to be turned on.
However, new research shows that dark mode can significantly improve your smartphone’s battery life. indicates that it is highly unlikely. A study led by Purdue University researchers shows that dark mode doesn’t improve your smartphone’s battery life as much as you might think.
For the study, the researchers tested six of the most recognizable Android apps on the Google Play Store: Google Maps, Google News, Google Phone, Google Calendar, YouTube and Calculator. Tests Google Pixel 2, Pixel 3, Pixel 5 and Moto Z3
Made on .
It can measure the power consumption of each pixel. Per-Frame OLED Power Profiler (PFOP)
Using a tool developed by the group , the researchers analyzed how the dark mode affects one minute of activity in each of the aforementioned apps.
The study notes that multiple users tend to have auto-brightness on their smartphones, which keeps screen brightness around 30-40 percent indoors. Purdue researchers say that activating dark mode when the screen brightness is in the middle of 30-50 percent saves only 3 to 9 percent battery power on average. However, this will vary depending on the smartphone you are using.
The researchers found that the difference in power savings is so small that many users will barely notice the difference. However, they underline that the higher the brightness levels, the higher the power savings when using dark mode. Switching from light to dark mode at 100 percent brightness can save an average of 39 to 47 percent of battery power.
Another interesting piece of information revealed by the study is that the measure of power an OLED display consumes with a light theme at lower brightness levels is the same as it consumes at higher brightness levels when dark mode is active. For example, researchers found that the Google News app on the Pixel 5 consumes the same amount of power with the screen brightness set to 20 percent and the light mode on, as when dark mode is active and brightness set to 50 percent. This means you can increase the brightness of your phone without losing too much power when using dark mode.
As usual, these results only take into account the battery life of your smartphone and make it clear that dark mode will not make much difference in this respect. In other words, he says the advantage of dark mode is only apparent at higher brightness levels. However, it should not be forgotten that the dark mode is much more advantageous in terms of eyestrain. . .