This specific CoreESIM data plan is exclusively designated for use within Vietnam. It does not provide connectivity in other Southeast Asian nations. If your travel plans include crossing borders into countries such as Cambodia, Laos, or Thailand, your data service will cease upon exiting Vietnamese network coverage. For uninterrupted connectivity across multiple destinations, CoreESIM offers regional eSIM plans designed to cover several countries, providing a seamless experience for multi-country itineraries.
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Is this CoreESIM plan valid for other Southeast Asian countries like Cambodia or Laos?
Updated April 22, 2026
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