The light can be turned on / off by tapping the button.
Since the screen background is black, it does not consume unnecessary power.
Even if you quit the application with the back key, the light will turn off, so you can prevent forgetting to turn it off.
Since the screen background is black, it does not consume unnecessary power.
Even if you quit the application with the back key, the light will turn off, so you can prevent forgetting to turn it off.
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