Guernsey and its smaller neighbours, Sark, Herm and Alderney, make up the Bailiwick of Guernsey in the Channel Islands. Like Jersey, it is a Crown Dependency: outside the United Kingdom and never part of the EU or EEA. That is why a UK or European phone plan may charge roaming on the island even though it feels very British. co:sim's Guernsey eSIM connects to Sure with 5G listed. This guide covers the roaming rules, the plan options, and an honest note on price, because for many trips a regional plan works out cheaper.
The Europe (42 areas) plan covers Guernsey together with Jersey, the Isle of Man, the UK, France and most of Europe. If you are also visiting Jersey, arriving through the UK, or taking the ferry from Saint-Malo, compare the regional plan's price before buying the single-island plan. It can be cheaper for the same amount of data and avoids switching eSIMs between islands.
A long weekend of maps, messaging and photos usually uses 1GB to 3GB.
Guernsey is easy to explore, and staying connected is straightforward once you know your home plan is not guaranteed to cover it. Compare the single-island and regional plans, then install before you travel.
co:sim Team
