A CoreESIM plan specifically provisioned for Sint Maarten / Saint-Martin is geo-restricted to that island only. If you venture to neighboring islands such as Anguilla, St. Barths, or Saba via ferry, your data connection will cease upon exiting the covered territory. For travelers planning multi-island itineraries, CoreESIM recommends investigating regional Caribbean eSIM plans that explicitly list all intended destinations. This ensures continuous connectivity across different sovereign territories without needing multiple eSIMs or incurring roaming charges.
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Is this CoreESIM plan for Sint Maarten also valid for adjacent islands like Anguilla or St. Barths?
Updated April 22, 2026
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