eSIM for Guernsey — Instant 4G/5G Data Plans

Guernsey's mobile network is served by three main operators: Sure Guernsey, JT Guernsey, and Airtel-Vodafone Guernsey. 4G LTE coverage is available across St. Peter Port and most of the island's populated areas. Guernsey is a small island of approximately 65 square kilometres, which means coverage is generally consistent across the main settled and tourist zones. More remote coastal cliff paths, offshore areas, and the smaller dependency islands of Alderney, Sark, and Herm have their own network conditions and may have limited coverage depending on local infrastructure. MobiSIM connects through supported local networks to deliver reliable data throughout Guernsey's main areas during your visit.

Install your MobiSIM eSIM before landing at Guernsey Airport or arriving by ferry from Poole or St. Malo so you are connected from the start of your visit. Download offline maps for St. Peter Port, the cliff path network, and any dependency islands you plan to visit before travelling, as Sark has no cars and limited infrastructure while Alderney and Herm have their own connectivity characteristics. Keep your home SIM active for calls while MobiSIM provides your data connection. Guernsey is not part of the UK or the EU and has its own telecommunications arrangements, so standard UK or EU roaming plans may not apply in the same way as on the British mainland. If you are taking a day trip to Sark by ferry from St. Peter Port, save all island maps, attraction details, and return ferry times offline before departing as mobile connectivity on Sark is very limited.