eSIM for Saint Helena, Ascension and Tristan da Cunha — Instant Data Plans

Travelling to Saint Helena, Ascension Island, or Tristan da Cunha? This British Overseas Territory encompasses three remarkably remote and distinct islands in the South Atlantic Ocean. A MobiSIM eSIM for Saint Helena, Ascension and Tristan da Cunha gives eligible travellers a digital data option without needing a physical SIM card, though connectivity on each island is extremely limited and depends on local infrastructure rather than standard mobile networks. Whether you are visiting Jamestown on Saint Helena, Georgetown on Ascension, or Edinburgh of the Seven Seas on Tristan da Cunha, preparing all digital resources thoroughly before departure is essential. Your QR code is delivered by email after purchase, allowing you to install the eSIM before setting out from your departure point.

Saint Helena has a basic mobile network operated by Sure Saint Helena, providing limited coverage around Jamestown and some accessible parts of the island. Ascension Island has telecommunications infrastructure primarily serving the military and government community, with limited commercial mobile access. Tristan da Cunha, the world's most remote inhabited island located around 2,400 kilometres from Saint Helena, has no standard mobile network and relies on satellite communication systems for all connectivity. Standard 4G and 3G mobile networks are absent across all three islands. MobiSIM eSIM coverage applies only where supported networks exist, and travellers should treat Tristan da Cunha as completely offline and Ascension and Saint Helena as having very limited connectivity compared to standard destinations.