You might want to set the provider you use while there. For instance, when in the western part of the BVI your device might switch between cell towers in the BVI and the USVI. While in the western part you can easily access the USVI towers so you will save the roaming charge if you set you device manually to a cell serve rather that depending on the auto select . For me it was a big deal because I am from Canada and US roaming is only $7 a day while international roaming is $12. It adds up so I saved some bucks by using AT&T and Wi-Fi as much as I could and only used international roaming while in North Sound and Anegada