We just returned from 6 months in the
Bahamas and cruised from
Florida to the Abacos, Eleuthera,
Exumas, Chub Cay and back to Stuart. We used an
IPhone 7 with Verizon in the US and BTC in the
Bahamas.
Current wireless data cost was $35 for 15gig. It works very well as a hot spot,
phone and for using the
phone apps. Generally 15 miles from shore we could reliably get data. Central
Exumas, Exuma Land and Sea Park, was the only place we went for days without coverage.
Good luck