All TMM boats have free WiFi, and the phone is just a flip phone. The phone is pre loaded with 10 minutes, but calling the base doesn't count toward those.
TMM Basic phone (capable of text) and is loaded with minimum of $10 of credit (NOT 10 minutes).
AND all TMM boats have "Free WiFi", which works pretty good in BVI.
We generally text via internet and FaceTime Audio from our individual phones.