It's for this guy.
1. Take a picture of a moment you don't want to miss.
2. Who wants to know how you're looking at the phone?
3. Anyone who wants to take a picture of their daily lives.
* When the power button is on or off, the silent picture is taken and saved in the album.
(The screen is recorded and stored on not only by the power key but also by text or phone lights.)
* Taking and saving timer pictures(Store in desired cycle regardless of screen on / off)