Prevent making or receiving calls
Sometimes you may want to restrict the calls that can be made or received with your phone. You can, for example, restrict all outgoing international calls or incoming calls when you are abroad.
Select > Settings and Calling > Call barring .
Call barring is a network service.
To change the settings, you need the barring password from your network service provider.
Prevent making calls
To prevent making any calls or international calls, select Outgoing calls or International calls. To prevent making international calls, but allow calls to your home country, select International calls except to home country.
Select Activate. Call barring affects all calls, including data calls.
Prevent receiving calls
To prevent receiving any calls or international calls when you are abroad, select Incoming calls or Incoming calls when roaming.
Call barring and call forwarding cannot be used at the same time.