Members of the Royal Brunei Airlines’ Royal Skies program will earn 10 Royal Skies miles for every minute of roaming calls made by manually switching their mobile phone network to Indosat when traveling to Indonesia.

There are no extra charges or hidden costs and subscribers will pay the normal roaming fee charged by the users’ registered network service provider. Only roaming calls will be eligible to earn miles — usage of MMS, GPRS data or SMS service are not valid.

Royal Skies miles members can also earn points through roaming calls when traveling to Netherlands, the U.K. and Austria when switching to the T-mobile network, and Belgium through the Mobistar network.

Members must register to be eligible for the service. A maximum of three registered mobile phone numbers per membership account, except for U.S.-registered mobile phones will be allowed. Members who register before June 1 will receive 500 bonus miles.