Best eSIM for Guernsey
Guernsey is a British Crown Dependency outside the EU Roam Like at Home zone, and roaming inclusion varies by carrier — UK plans included. If your trip includes the outer islands of the Bailiwick, coverage on Sark is limited regardless of provider.
Last checked: October 2026. Plans and prices change — verify before purchase.
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How much will it cost for your trip?
Guernsey is not part of the EU or EEA. Most EU carriers charge daily roaming fees for the Channel Islands. UK SIM holders should also check — some UK plans exclude Crown Dependencies. A travel eSIM with Channel Islands or UK coverage often handles Guernsey without extra charges.
4G coverage is good throughout Guernsey. For day trips to Herm and Sark (no cars, smaller islands), basic coverage reaches most areas but can be patchy on Sark's cliffs. Download offline maps for walking routes before boarding the ferry.
Prices sourced from provider websites. Network and status information sourced from provider documentation and official sources (2026).
eSIM — Guernsey
Network coverage in Guernsey
Guernsey is served by two operators: JT and Sure. Both provide good 4G coverage on Guernsey's main island. 5G is rolling out across the Bailiwick during 2026, with full coverage targeted by the end of 2026 on both networks. For the main tourist areas — St Peter Port, the west coast beaches, the German occupation sites — both operators deliver reliable 4G. The outer Bailiwick islands have varying coverage: Herm has 4G; Sark and Alderney are more limited.
Guernsey is a British Crown Dependency: EU Roam Like Home does not apply, and UK SIM card roaming policy varies by carrier. Travel eSIMs covering the Channel Islands typically route via JT or Sure. For specific dead zones on Sark's cliffs and ferry crossings, see the field tip above.
Where are you travelling from? Does your plan cover this destination?
All AT&T plansPlan data / 1 day: US$12; plan data / 30 days: US$120.Compare: the pass may be enough.
Unlimited UltimateIncluded in the plan.Keep your plan.
Unlimited Plus, Unlimited Welcome5 GB / 1 day: US$12; 20 GB / 30 days: US$100.Compare: the pass may be enough.
Experience Beyond (Go5G Next) · Experience More (Go5G Plus, Magenta MAX)Included in the plan.Keep your plan.
Essentials2 GB / 1 day: US$10; 15 GB / 10 days: US$50; 30 GB / 30 days: US$75.Compare: the pass may be enough.
Full Works (2024+)Included in the plan.Keep your plan.
Other EE plansPlan data / 1 day: £2.72; plan data / 7 days: £16.50; plan data / 12 days: £27.50.Compare: the pass may be enough.
All O2 plansIncluded in the plan.Keep your plan.
Global Roam (Xtra) · Euro RoamIncluded in the plan.Keep your plan.
Other Vodafone plansPlan data / 1 day: £2.75; plan data / 8 days: £16; plan data / 15 days: £21.Compare: the pass may be enough.
EssentialIncluded in the plan.Keep your plan.
AdvancedPlan data / 1 day: £2.Compare: the pass may be enough.
All TELUS plansPlan data / 1 day: CA$18; plan data / 14 days: CA$50; plan data / 30 days: CA$60.Compare: the pass may be enough.
All Bell plans5 GB / 1 day: CA$16; plan data / 7 days: CA$70; plan data / 14 days: CA$75; plan data / 30 days: CA$90; +1 more.Compare: the pass may be enough.
All Rogers plansPlan data / 1 day: CA$18; plan data / 3 days: CA$45; plan data / 7 days: CA$75; plan data / 14 days: CA$100; +1 more.Compare: the pass may be enough.
Forfait Canada et InternationalIncluded in the plan.Keep your plan.
Forfait Canada, États-Unis et Mexique · Forfaits Canada et États-Unis · Forfaits Canada et France · Other Vidéotron plansNo pass: pay as you go. (figure not confirmed by an official source)Get an eSIM.
All Telstra plansPay as you go: A$3/MB.Get an eSIM.
Choice Plus, Plus Family, Plus Promo5 GB / 1 day: A$5.Compare: the pass may be enough.
Other Optus plans1 GB / 1 day: A$10.Get an eSIM.
All Vodafone (TPG) plansPlan data / 1 day: A$5.Compare: the pass may be enough.
All Vodafone Ireland plansIncluded in the plan.Keep your plan.
All Three Ireland plansIncluded in the plan.Keep your plan.
All eir plansPay as you go: €4.99/MB.Get an eSIM.
Arrival protocol in Guernsey
VPN, passwords and documents
Guernsey has no significant internet restrictions. A VPN can be useful on public Wi-Fi (cafés, hotels, airports) to keep your browsing private from the network operator. A password manager can also be useful. A secure cloud backup of your passport, insurance certificate and hotel bookings is also useful — keep an offline copy too. None of these are mandatory.
Mistakes to avoid in Guernsey
Continuing your trip in the British Isles?
Many travellers combine Guernsey with neighbouring countries. See our guides for eSIM in Jersey, eSIM in the UK and eSIM in France. For multi-country trips combining Guernsey with neighbouring destinations in the British Isles, our Europe regional plan comparison may be useful.