FairSIM eSIM for Guernsey
Guernsey is small, green and easy to underestimate. St Peter Port climbs in steps from the harbour, the south coast cliff path runs above bays you reach only on foot, and the whole island is ringed by one of the biggest tidal ranges in the world. You will use your phone for tide tables, bus times, ferry sailings to Herm and Sark, and the booking that says the table is held until seven.
The rule that catches people out is jurisdictional. Guernsey is a Crown Dependency: not part of the United Kingdom, and not in the European Union. EU roam-like-home does not apply here, and plenty of UK tariffs exclude the Channel Islands from their home allowance and from their Europe roaming zone. A phone that costs nothing to use in Paris or Manchester can start billing the moment the Condor ferry ties up in St Peter Port.
A FairSIM eSIM sidesteps that. It roams onto JT, which runs 5G alongside its 4G layer, or Sure, the long-standing Guernsey operator on 4G. You install it over Wi-Fi at home, switch the line on when you land at Guernsey Airport or step off the boat, and pay wholesale data rates instead of a daily pass.
- CarriersSure
- CompatibilityCheck if eSIM is available on your phone
- No days lostPurchase now, data will start when you arrive
Guernsey eSIM plans
Plan starts: On first data use
Coverage in Guernsey
- 4G LTE5G
JT
The Jersey Telecom network, live across the Channel Islands with 2G, 3G, 4G and 5G. The faster of the two hosts where 5G has been rolled out, including St Peter Port and the main island.
- 4G LTE5G
Sure
Guernsey's home operator, with 2G, 3G and 4G across the Bailiwick. No 5G on this network, but 4G coverage over the parishes, the harbours and the airport is solid.
4G LTE island-wide, with 5G on JT where it has been deployed
Typical speed: Comfortable 4G speeds across the island for maps, streaming and video calls, and faster again on JT 5G in and around St Peter Port. Peak-season evenings in town can feel slower when the island is full.
St Peter Port, St Sampson, the airport, the main roads and the coastal bays are well covered. Signal thins in the deep cliff valleys on the south coast, inside granite-walled buildings, and on the water between islands. Alderney and Herm are served by the same operators; on Sark expect gaps and plan for offline maps.
How much data do you need in Guernsey?
It depends on how you travel. Find your trip below, then pick the plan that matches. You can always top up in the app.
Long weekend in St Peter Port
Three to five nights of harbour, restaurants, Hauteville House and short bus rides.
Why data matters: Maps on cobbled lanes, restaurant bookings, bus times on buses.gg, and photos uploaded from the Castle Cornet ramparts.
- 7 days
- 3 GB
- 14 days
- 5 GB
- 30 days
- 10 GB
Island hopping the Bailiwick
Day trips to Herm and Sark, or a night or two on Alderney.
Why data matters: Ferry and flight times shift with tide and weather, so you refresh timetables constantly. Coverage on Sark is thin, so download maps and tickets before you sail.
- 7 days
- 5 GB
- 14 days
- 10 GB
- 30 days
- 20 GB
Cliff path walking and coast weeks
The south coast route, the north coast bays and the Walking Festival.
Why data matters: GPS tracks, tide tables for Lihou and the bays, weather checks and a live location shared with whoever is meeting you at the other end.
- 7 days
- 5 GB
- 14 days
- 10 GB
- 30 days
- 20 GB
Finance and business trip
Meetings in St Peter Port, often combined with a hop to Jersey.
Why data matters: Teams and Zoom on the move, Personal Hotspot for the laptop in the hotel, VPN into the office and a second plan for Jersey from the same app.
- 7 days
- 10 GB
- 14 days
- 20 GB
- 30 days
- Unlimited
Family summer holiday
Beaches, Guernsey Aquarium, kayaking and the Seafront Sundays in town.
Why data matters: Two or three phones sharing one hotspot, kids streaming on rainy afternoons, and endless photos from Shell Beach.
- 7 days
- 10 GB
- 14 days
- 20 GB
- 30 days
- Unlimited
What your home carrier charges in Guernsey
Daily roaming passes look small until you multiply them by the length of the trip. FairSIM plans for Guernsey start at $6.99 and never bill per day.
| Carrier | Roaming charge | FairSIM |
|---|---|---|
| AT&T International Day Pass (US) | $12 per day per line, $6 for each additional line, charged only on the days you use it | from $6.99, no daily fee |
| Verizon TravelPass (US) | $12 per line per day, 5 GB of high-speed data per day then slower speeds | from $6.99, no daily fee |
| EE (UK) | £2.72 per day, or £16.50 for a 7-day EU pass and £30 for 15 days | from $6.99, no daily fee |
| Vodafone UK | £2.75 per day with a 25 GB fair-use limit, or £16 for 8 days and £21 for 15 days | from $6.99, no daily fee |
| Orange or Telekom (EU) | Included under EU roam-like-at-home rules within your plan's fair-use limit | from $6.99, no daily fee |
| Telstra International Day Pass (Australia) | A$10 per day with no data, calls and texts only | from $6.99, no daily fee |
Carrier prices as published on their roaming pages at the time of writing. They change often; check your own plan before you fly.
How FairSIM works
Three steps between you and the internet abroad. Nothing to pick up at the airport.
Pick a destination and a plan
Choose the country or region and the data you need. The price you see is the price you pay.
Tap install
On iPhone (iOS 17.4+) the eSIM installs in one tap, no QR code. Do it at home while you still have Wi-Fi.
Land and connect
Turn on data roaming for the FairSIM line when you arrive. Your plan starts when it first connects.
Connectivity tips for Guernsey
Install the eSIM at home over Wi-Fi and turn the line on after you land. Flights from the UK are under an hour, which is not long enough to troubleshoot.
Do not assume your UK contract includes the Channel Islands. Check the small print, because Guernsey is frequently outside both the UK allowance and the Europe roaming zone.
The island speed limit is 35 mph, and lower on the green ruettes tranquilles where walkers and cyclists have priority. Yellow lines at junctions mean stop, then filter in turn.
Check tide times before any coastal walk. The range is around ten metres, the Lihou causeway floods, and bays that look endless at low water disappear.
Going to Sark? Download offline maps and your return ticket first. Coverage there is patchy and the island is car-free, so you walk, cycle or take a tractor.
Guernsey banknotes are not legal tender in the UK. Spend them or change them before you leave; card payment is accepted almost everywhere anyway.
Keep your home SIM in the phone with its data roaming switched off, so bank one-time codes still arrive while the FairSIM line carries the data.
Continuing to Jersey, France or the UK? Buy the next plan in the app before you board, or take a Europe regional plan if the trip crosses several countries.
Can you rely on free Wi-Fi?
Hotels, guest houses, pubs and cafés in St Peter Port generally have decent free Wi-Fi, and the airport has it too. What it will not cover is the parts of the trip where you actually need data: the bus stop at Pleinmont, the cliff path above Moulin Huet, the deck of the Sark boat. Ferry Wi-Fi mid-Channel is weak at best, and out on the water your phone may latch onto a French or Jersey network instead, which a Guernsey-only plan will not cover. Treat Wi-Fi as a bonus for big downloads, not as your connection.
Local SIM card or eSIM in Guernsey?
Sure and JT both sell prepaid SIMs and top-up bundles in Guernsey, mostly through shops in St Peter Port rather than at the airport, and opening hours are island hours rather than airport hours. If you are staying for months, a local contract makes sense and gives you a Channel Islands number. For a week on the cliff paths it is a shop visit, an ID check and a plan sized for residents rather than visitors.
A FairSIM eSIM installs before you leave home, connects to the same JT or Sure towers on arrival, and costs the same whether you land at the airport at midday or step off a delayed ferry at night. Your home number stays on the phone for bank codes and calls. If Jersey, France or a UK leg is part of the same trip, you buy the next plan in the app instead of hunting for another counter.
Guernsey eSIM questions
Does eSIM work in Guernsey?
Yes. An unlocked eSIM-capable phone connects to JT or Sure with a travel eSIM. On iPhone that means XS, XR or newer; most recent Samsung, Google Pixel and other flagship Android models support eSIM too.
Which network will my Guernsey eSIM use?
JT or Sure. JT runs 2G, 3G, 4G and 5G across the Channel Islands; Sure is the Guernsey operator on 2G, 3G and 4G. The app shows which network a plan uses.
Is there 5G in Guernsey?
JT has 5G deployed in the Channel Islands, including around St Peter Port. Sure is a 4G network here, so on Sure you get LTE rather than 5G. Either way, 4G is the reliable baseline across the island.
Does my UK phone plan cover Guernsey for free?
Often not. Guernsey is a Crown Dependency, not part of the UK, and many UK tariffs exclude the Channel Islands from the home allowance and from their Europe roaming zone. Check your plan's country list before you travel.
Does EU roam-like-home apply in Guernsey?
No. Guernsey is outside the European Union, so EU roaming rules do not apply and EU carriers charge non-EU rates unless you buy a specific pass.
Does a Guernsey plan also cover Jersey, Alderney, Sark or France?
Alderney, Herm and Sark are part of the Bailiwick and served by the same operators, though coverage on Sark is patchy. Jersey and France are separate destinations: buy a separate plan or a Europe regional plan in the app.
Can I use Personal Hotspot in Guernsey?
Yes. Every FairSIM plan supports Personal Hotspot, with no separate cap, which is useful for a laptop in a self-catering cottage.
Should I install the eSIM before or after arriving?
Before. Install it over Wi-Fi at home, then switch on the line and data roaming once you land or dock. Validity typically starts at the first connection to a Guernsey network.
How much data do I need for a week in Guernsey?
A long weekend of maps, messages and bookings uses around 2 to 3 GB. A week of walking, ferry checks and photo uploads is closer to 5 GB. Add more if you stream or work from the island.
What is an eSIM?
A SIM card built into your phone. Instead of a plastic chip, you download a profile. Every iPhone since the XS has one next to the physical SIM slot, so your home number stays put while FairSIM supplies the data.
Is my phone compatible?
FairSIM works with eSIM-compatible, carrier-unlocked iPhones: the XS, XR and everything newer, on iOS 17.4 or later for the one-tap install with no QR code. iPhones bought in mainland China do not support eSIM at all, even when unlocked. Not sure yours is unlocked? Check Settings, General, About, Carrier Lock, or ask your carrier. The full list is on the How it works page.
When should I install my eSIM?
Before you travel, while you still have Wi-Fi. Installing does not start your plan; the validity typically starts when the eSIM first connects to a network at your destination.
Do FairSIM eSIMs come with a phone number?
No. FairSIM eSIMs are data-only by design, which keeps costs low. For calls and texts, your physical SIM stays active so you keep your existing number, and WhatsApp, FaceTime and iMessage work over data.
