Find "Voice call"
Press Applications.
Press Settings.
Press Call.
Press Additional settings.
Press Call barring.
Press Voice call.
Select barring option
Press one of the following options:
All outgoing calls
All outgoing calls
Int'l calls
Int'l calls except home
All incoming calls
Incoming when roaming
Select setting
Key in your barring password (default is 0000).
Press OK.
The request is sent.
The action is confirmed on the display.
Press OK.
The request is sent.
The action is confirmed on the display.
Exit
Press the Home key to return to standby mode.