Several functions are associated with On/Off:

Tap On/Off to turn your mobile phone on or off.

Tap On/Off to turn on the screen lock.

To reject an incoming call, tap On/Off twice.

Several functions are associated with The Home key:

Tap the Home key to return to the home screen.

Tap the Home key twice to see a list of active applications and your latest used contacts.

Slide the Silent mode key right or left to turn silent mode on of off.

Several functions are associated with The Volume keys:

Tap the Top volume key or the Bottom volume key to adjust the ring volume.

Tap the Top volume key or the Bottom volume key during a call to adjust the volume.

Tap the Top volume key or the Bottom volume key to silence the incoming call alert.

Connect the charger or data cable to the phone socket and to a power point or your computer's USB port.

Connect the headset to the headset socket.

Point the camera lens at the back of your mobile phone at the required object to take a picture or record a video clip.

Point the camera lens at the front of your mobile phone at the required object during a video call.