I'm not sure RichC. When we were on the Emerald, we only used our cell phone one day in port. We are charged roaming fees when we do use it, we have AT&T. I would assume it would be put on your shipboard account. Maybe f-mattox knows for sure. The only reason we used it was to wish my hubby's mom a happy Thanksgiving. I'd leave it at home if I had a choice.