CoreESIM's specific Montserrat plan is engineered for network access exclusively within Montserrat's geographical boundaries. As most international travelers route through Antigua (VC Bird International Airport, ANU) to reach Montserrat, this plan will not provide active data service during your layover or transfer in Antigua. For continuous connectivity across both islands, we recommend a multi-country or regional eSIM solution available through CoreESIM, ensuring seamless data from your initial landing to your final destination.
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Does CoreESIM support connectivity during transit through Antigua?
Updated April 22, 2026
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