We just completed a 6-island Caribbean cruise and I was impressed. When we got into port I fired up my phone and it immediately told me the price of a call, 20 cents a minute. I sent a lot of cellphone pics and movies to the family in the USA at NO CHARGE! I checked on my phone each day and it showed each call and the cost. Exactly what I expected! Very happy about cost and use inside the USA also.
Be sure to find a friend or relative who is on Google Fi as both of you get a $20 signup recruiting reward.
Bottom Line: Yes, I would recommend this to a friend