Your EastESIM is designed to connect you to land-based cellular networks, which means it will work perfectly when your cruise ship docks at ports in destinations like Singapore, Phuket, or Halong Bay, and you are exploring on land. However, while your ship is sailing on the open sea, outside the range of coastal cell towers, your eSIM will not provide connectivity as this requires specialized satellite services. We recommend enjoying the sea views and reconnecting with EastESIM the moment you step ashore to explore Asia's incredible destinations.
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Does my EastESIM work on cruise ships or while at sea in Asia?
Updated April 22, 2026
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