Home Key
Press Home key at a non - standby screen to go back
IDLE screen
Long Press to open recently used applications.
Volume +/- Key
Press Volume Up/Down key to change the volume.
Menu Key
Press Menu key to open a context menu related with
current screen or Application.
Back Key
Press Back key to open the previous screen you were
working on.
Flip cover
Install the flip cover and close the holster, interface
display clock, you can slide to right to enter the shortcut
interface. Double click a blank area can let the screen dark.