Several functions are associated with On/Off:

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

Briefly tap On/Off to turn on the key lock.

Tap the Home key to return to standby mode.

Several functions are associated with the Return key:

Tap the Return key to exit an active menu item.

Tap and hold the Return key to view a list of the most recently used menu items and applications.

Tap the Search key to search the internet.

Several functions are associated with the Volume key:

Tap the upper or lower part of the Volume key to adjust the ring volume.

Tap the upper or lower part of the Volume key during a call to adjust the volume.

Tap the upper or lower part of the 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.

Several functions are associated with the Camera key:

Tap the Camera key to turn on the camera.

Tap the Camera key to take a picture when the camera is turned on.

Point the camera lens at the required object to take a picture or record a video clip.