To connect an earphone so
you can listen to music/radio.
To hear the voice of the other
side when calling.
To adjust the ringer volume,
adjust the voice volume
during a call, and adjust media
volume.
Open a list of options available
in the current screen or
application.
Touch and hold to open a
window showing your most
recently used applications.
Go back to the previous
screen;
Close the on-screen keypad, a
dialog box, an options menu,
or the Notification panel.
To connect charger or USB
data cable for data exchange.
Switch the phone on and off;
Press and hold to open phone
options menu.
To listen to music, and other
sounds offered by your phone.
Signal strength indicator for SIM1
Signal strength indicator for SIM2
Alert Type is Ring and Vibration
Alert Type is Loudest Ring and Vibration