How much does it cost to have International Roaming?
When you activate international roaming you are giving your mobile service the capability to access overseas networks while you are travelling. It does not cost anything to have this capability activated on your phone. The usage costs while you are using an overseas network are greatly increased and you also get charged to receive calls as well as making them. You can check the costs for the specific country you are travelling to by clicking here for Optus Roaming cost.