I have checked it stateside. It roams off of T-Mobile. To check the balance does not seem to use much roaming #191# -- you get the balance and expire date. Now a phone call is another story, the screen that I had said the roaming to call SXM was $1.75 per minute.

The buychippie online site is working again to check the expire date, but you could never check the balance from the online site. If you know you balance when you leave the island then it will not change as long as you add to the expire date. I put a $1 on every 60 days.