Quote:
Originally Posted by dgerst
I turned off the flash, covered the lens with my thumb, and took a picture. I set the black photo as my wallpaper. Looks nice and saves a bit of battery.
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This is a pretty common misconception, setting a black background on an LCD screen doesn't save any battery. The backlight is still on, but the pixels are set to black to prevent transmission of the light. Therefore, no battery savings.