From the Carnnival website:
Through an exclusive agreement between Carnival Cruise Lines and Wireless Maritime Services (WMS),... Carnival guests sailing aboard the “Fun Ships” can now enjoy a new communications option that allows them to stay in touch with people back home using their personal cell phones while in port or at sea.
... the new fleetwide service is compatible with any cellular phone and enables guests sailing on Carnival to make and receive calls anywhere in the world from any cruising region. ... currently available aboard the Carnival Triumph, with the balance of the line’s 21-vessel fleet scheduled to be completed by early next year.
The new fleetwide cellular phone service requires no additional software or special dialing procedures ... International roaming fees apply to all shipboard cell phone calls.
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