in the new year my wife will be off to Bali and Borneo with one of my boys and i will heading off to the US with the other young fella to do the disneyland thing. not too sure on the best way to keep in contact with each other. can i get a sim card in the US like we do in Bali, or do i need to get a calling card or just stick to the internet using skype or something like that, any advise appreciated.