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The list below shows you what the different keys and sockets on your phone are used for.
Several functions are associated with On/Off:
Press On/Off to turn your phone on or off.
Press On/Off to turn on the screen lock.
The Volume key
Several functions are associated with the Volume key:
Press the upper or lower part of the Volume key to adjust the ring volume.
Press the upper or lower part of the Volume key during a call to adjust the volume.
Press the upper or lower part of the Volume key to silence the incoming call alert.
Connect the charger or data cable to the socket and to a wall socket or your computer's USB port.
Connect the headset to the headset socket.
Point the camera lens at the required object to take a picture or record a video clip.