By default, the international calling facility is enabled. If you do want to disable it you can enable it from your Network settings page. International calls will be charged at a higher rate than calls to UK landlines and mobiles. Please visit our Tariff and charges page for current prices. With international calling enabled, you to make calls from the UK to other countries, it does not enable you to use your mobile outside the UK. To do this you will need to enable roaming.