On/Off
Several functions are associated with On/Off:
Press and hold On/Off to turn your device on or off.
Briefly press On/Off to turn on the key lock.
The Home key
Press the Home key to return to standby mode.
The Silent mode key
Slide the Silent mode key upwards or downwards to turn silent mode on or off.
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 at the bottom of your device and to a wall socket or your computer's USB port.
Headset socket
Connect the headset to the headset socket at the top of your device.