On/Off
Several functions are associated with On/Off:
Press On/Off to turn your device on or off.
Press On/Off to turn on the key lock.
Press and hold On/Off to access silent mode and flight mode.
The Volume key
Press the upper or lower part of the Volume key to adjust the volume.
Socket
Connect the charger or data cable to the socket and to a wall socket or your computer's USB port.
Headset socket
Connect the headset to the headset socket.
Camera lens at the front of your device
Point the camera lens at the front of your device at the required object to take a picture.