You've probably heard the tip to reduce battery life on your smartphone, turn on dark mode all the time. Theoretically, in dark mode the screen won't display the white color that uses more battery. But a study conducted by the BBC found that dark mode causes the opposite to happen.
The test was conducted by asking participants to use the BBC Sounds website in dark mode and light mode. As many as 80% of participants were found to increase the brightness of the apprentice's screen when accessing the site in dark mode. Therefore, any power savings that should occur when using dark mode cannot be enjoyed.
So if you really want to reduce battery life, using dark mode is only effective if the screen brightness is not changed.
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GADGET