You can place calls from satellite phones on board provided you purchase a satellite phone card from a phone card machine on board. Phone card machines are located in a few areas on board. Ask someone where you can find them (hint: there are usually some by the phones themselves, crew and staff messes, and inside the crew and staff bars). You should generally get over an hour’s worth of airtime on a $20 card. If you have a cell phone, you may be able to use it as well when the ship is near land or in port. Check roaming prices and availability with your carrier. You can also buy calling cards in any port for use there.