Prevent making or receiving calls
Keep your phone bill under control by preventing certain types of 
calls. You can prevent, for example, incoming calls while you're 
abroad. Call barring is a network service.
1. Select settings.
2. Select security > call barring service and an option.
3. Type in the barring password you have received from your service 
provider.
Tip: To check how long your calls have been, how much data you've 
used, or how many text messages you've sent, select counters. You 
can set the counters to be cleared automatically, for example, each 
month.
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