If my ship is in port. And I am still on the ship. And I turn airplane mode off in order to get a cell signal. Will I pick up the signal from land or will it somehow connect to the ship and thereby cost me a lot of money if I use my phone? I am thinking that this might be the best time to catch up on email, phone calls, etc. I have T-Mobile and I will have unlimited text and 5GB of data for free in port. Voice calls will be $.25 per minute. But that is assuming a connection to the towers on land and not the shlip.