With WorldESIM, you'll enjoy excellent connectivity on the beach at Hideaway Island, perfect for sharing your pre-dive excitement or uploading photos of your unique waterproof postcards. However, once you submerge to mail your postcard at the actual Underwater Post Office, mobile data will naturally cease to function. Connectivity resumes the moment you surface, allowing you to instantly share your underwater adventure.
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Can I connect with WorldESIM at Vanuatu's Underwater Post Office?
Updated April 22, 2026
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