1
Return to the previous screen.
2
Return to the idle screen.
Open the list of recent applications.
3
4
Turn the screen on or off.
5
Set the brightness of the display.
6
Adjust the device's volume.
While playing media files,
Pause or resume a video or music files.
7
Move to the previous file; Scan backward in a file (press and hold).
Move to the next file; Scan forward in a file (press and hold).
8
Display android applications.
Show android menu.
9
11