No! This is a major roaming trap. Tonga is an independent kingdom and is NOT included in any Australian, New Zealand, EU, or US domestic plans. Your home carrier will charge you extremely high "Rest of World" satellite rates. A Cellesim eSIM is a one-time prepaid fee that is significantly cheaper.
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Is roaming free in Tonga with my Australian, NZ, or US SIM card?
Updated April 22, 2026
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