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.
To change the settings, you need the barring password from your network service provider.
If an internet call service is installed, select Mobile call barring.
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.
If an internet call service is installed, select Mobile call barring.
To prevent receiving any calls or international calls when you are abroad, select Incoming calls or Incoming calls when roaming.
Select Activate.
Select Internet call barring > Anonymous call barring > On.
Call barring and call forwarding cannot be used at the same time.