Communication
Rejecting a call
When a call comes in, drag 
outside the circle, or press and hold the headset button.
To send a message when rejecting an incoming call, tap Reject call with message. To create the rejection message, press the Menu button, and then tap Call settings →Set reject messages.
Automatically rejecting calls from unwanted numbers
Press the Menu button, tap Call settings →Call rejection, drag the Auto reject mode switch to the right, and then tap Auto reject list. Tap Create, enter a number, assign a category, and then tap Save.
Missed calls
If a call is missed, 
appears on the status bar. Open the notifications panel to view the list of missed calls.
Call waiting
Call waiting is a service provided by the service provider. A user can use this service to suspend a current call and switch to an incoming call. This service is not available for video calls.
To make use of this service, press the Menu button, and then tap Call settings →Additional settings →Call waiting.
Call forwarding
The device can be set to send incoming calls to a specified number.
Press the Menu button, tap Call settings →Call forwarding, and then select a call type and condition. Enter a number and tap Enable.
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