I put mine into AirPlane mode and turn off data fetch then use it like a iPod and use the ships Internet Cafe if I need to send emails. I don't need to get a huge phone bill after returning from my cruise.
Carnival Glory 01-28-2017
Carnival Glory 02-04-2017 - Bloggers Cruise 10
Carnival Legend 05-23-2017 - Bloggers Cruise 10