1
30 GB
365 days
GG
$65.00
$2.17/GB
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Find the best-fit eSIM for Guernsey. Simple filters, clear comparisons, faster decisions.
Compare 0 live offers from 0 providers. Prices update every 12 hours.
Choosing the best eSIM for Guernsey means picking a data plan that installs before you fly or sail and connects the moment you land at Guernsey Airport or step off the ferry in St Peter Port, no physical SIM swap required. This page ranks the top Guernsey eSIM plans and explains how to compare a Guernsey eSIM card, so a short island break or a longer Channel Islands stay starts with eSIM for travel to Guernsey already active and Guernsey eSIM plans already loaded on your phone.
eSIM (embedded SIM): a digital SIM profile installed by QR code or app, with no physical card to insert or swap, used to connect a compatible phone to a mobile network. In Guernsey, it connects to Sure and JT depending on the plan you choose.
Buying and installing a Guernsey eSIM before departure means the profile is ready to switch on the moment you land at Guernsey Airport, rather than looking for a SIM counter after a short hop from London Gatwick, Manchester, Southampton or Birmingham, or after a Condor Ferries crossing from Poole, Portsmouth or St Malo. Since Guernsey is a Crown Dependency outside the UK and the EU, home UK roam-free plans and EU roaming allowances often do not extend here, and having data live from arrival means checking bus times into St Peter Port or confirming a hotel address does not depend on the terminal’s WiFi.
A Guernsey eSIM plan typically costs a fraction of that, without a detour to a phone shop on the High Street. That matters for using the Guernsey Travel bus tracker for the island’s flat-fare bus network, checking Travel Trident sailing times for a day trip to Herm, or booking a table by WhatsApp with a local guesthouse.
We compare Guernsey eSIM plans on price per GB, network coverage across the island and its smaller neighbours, network partner reliability, activation speed, and hotspot support.
Price per GB
Median price per GB across eligible provider plans, weighted toward common traveler data sizes.
Network coverage
Population and geographic coverage across major cities, tourist regions, transit routes, and rural areas.
Network partner
Activation speed
QR-code-to-data time. Most providers under 2 minutes; some require app install.
Hotspot support
Tethering allowed on all plan tiers without extra fees or fair-use throttling.
Customer support
24/7 chat availability, response time, and refund track record on canceled trips.
Providers on this list, including Airalo, Saily, Ubigi, Nomad, Yesim, Alosim, Maya Mobile, and Redteago, route their Guernsey coverage throughΒ SureΒ orΒ JT, so the network partner behind each plan is worth checking before booking.
The best overall Guernsey eSIM balances six criteria: price, network coverage, network partner strength, activation flow, hotspot support, and ongoing customer support.Β A representative arrival flow looks like landing at Guernsey Airport, taking the bus or a taxi into St Peter Port, and using the eSIM immediately for the CT Plus bus tracker, hotel directions, and Travel Trident or Isle of Sark Shipping Company ferry times for an island-hopping day out.
Best for: short island-break visitors splitting a few days between St Peter Port, the south coast cliff paths, and a day trip to Herm or Sark within a 3 to 5 day visit.
Light travelers checking maps and messaging apps often use 300 to 500 MB a day, regular sightseers checking photos, ferry bookings, and social uploads often use 700 MB to 1.5 GB a day, and anyone planning to stream music on a cliff-path walk or video call home should compare the larger bundles.
The best overall plan for Guernsey is rarely the cheapest one on paper. It is the plan that pairs enough data and validity days with a reliable network partner, since a dropped connection matters more on a Herm or Sark day trip than it does in central St Peter Port. Hotspot support is worth confirming if you are sharing one phone’s data between two people on a walking holiday.Β
The live comparison table above ranks current plans by effective cost per GB alongside coverage and validity, so start there before locking in a choice.
Sure leads Guernsey on measured mobile performance, recording the fastest average mobile download speed and the lowest ping on the island in the first quarter of 2025 according to SpeedGEO.net. It is the strongest operator in St Peter Port, the capital and main harbour town, in St Sampson, the second-largest built-up area in the north, and along the parish roads through St Martin in the east. JT operates a comparable nationwide network and is the wholesale operator behind Guernsey’s newer virtual mobile service, giving it the same underlying coverage footprint in the same towns.
Both operators are in the middle of a joint 5G rollout that is expected to reach full standalone 5G coverage by the end of 2026, so 4G remains the dependable fallback on most of the island through this transition. Coverage runs reliably along Guernsey’s coast road that rings the island and through the inland parish lanes connecting St Peter Port to the Vale in the north and Torteval and St Saviour in the west. The cliff path route on the south coast between Moulin Huet and Petit Bot carries a signal in most stretches, with occasional dips through the more wooded valley sections.
Coverage becomes more variable once you leave Guernsey itself for its smaller neighbours. Herm, a 20 minute Travel Trident crossing from Crown Pier, picks up a signal from Guernsey’s own towers rather than an independent network, so reception can thin out on the far side of the island past Shell Beach. Sark, reached by the Isle of Sark Shipping Company, is a deliberately car-free island where mobile coverage is noticeably patchier than on Guernsey, and Alderney, reached by a short flight or boat connection, sits on its own separate network arrangement outside the scope of a standard Guernsey eSIM plan. Travelers should not assume a Guernsey plan carries the same performance onto these smaller islands.
The practical implication is that day-trippers heading to Herm or Sark, or hikers walking the Moulin Huet to Petit Bot cliff path, should treat network partner choice and offline map downloads as more important than the visitor staying within St Peter Port and the main parish roads, where both operators perform consistently.
Any Guernsey eSIM plan comes with a short list of things worth knowing in advance, none of which should stop a traveler from choosing one over a physical SIM.
A 5G network still mid-rollout. Will data speed be consistent everywhere? Sure and JT are both building out 5G through 2026, so most of the island still runs on 4G, which is more than adequate for maps, messaging, and browsing but worth knowing if you expect 5G speeds on arrival.
Day trips to Herm and Sark. Does coverage carry over to the smaller islands? Herm picks up a fainter signal from Guernsey’s own towers, and car-free Sark has noticeably patchier coverage, so downloading offline maps before boarding the Travel Trident or the Isle of Sark Shipping Company ferry is worth the extra minute.
Assuming a UK or EU roaming plan already covers Guernsey. Is a home carrier’s roam-free allowance enough here? Guernsey is a Crown Dependency, not part of the UK or the EU, so UK and EU roaming bundles frequently exclude it, which is exactly the gap a Guernsey eSIM plan is built to close.
Getting the eSIM installed before you travel. Is it possible to activate after arrival if something goes wrong? It is, but installing the Guernsey eSIM on home WiFi before flying or boarding the ferry avoids relying on Guernsey Airport‘s terminal WiFi or the ferry terminal in St Peter Port for the first setup step.
Install the Guernsey eSIM on home WiFi before you travel, then switch it on after landing at Guernsey Airport or arriving by ferry into St Peter Port so it is ready before you catch the bus or find your hotel.
Pick a plan, pay, get a QR code by email within ~60 seconds.
iPhone: Settings β Cellular. Android: Network β SIMs β Add eSIM.
Point your phone at the QR on a second screen, or paste the activation code.
Name it “eSIM” so it’s obvious in your line picker.
Toggle the eSIM line on as you land. Data works on the jet bridge.
Most phones released from 2018 onward support eSIM, including recent iPhone, Samsung Galaxy, and Google Pixel models. Check your device settings under Mobile/Cellular Data to confirm eSIM compatibility before you travel.
Β
XS, XR, 11, 12, 13, 14, 15, 16 & SE (2nd gen+)
Most modern phones support dual SIM, which means a traveler’s home SIM stays in its slot for calls and text messages while the Guernsey eSIM handles data in a second, separate profile. Both can be active at once, and most phones let you choose which line handles data by default.
For a Guernsey trip, this setup means your home number keeps working for bank verification codes, family calls, or work messages, while the Guernsey eSIM card handles the heavier data work: the CT Plus bus tracker, offline maps for the south coast cliff paths, and Travel Trident or Isle of Sark Shipping Company booking confirmations. It also means eSIM for travel to Guernsey can be swapped for a different Guernsey eSIM plan on a later trip without touching the home number at all.
The most common mistake travelers make is assuming their home carrier’s UK or EU roaming allowance already covers Guernsey and leaving data roaming switched on regardless. Since Guernsey sits outside both the UK and EU roaming frameworks, a home SIM left on with roaming enabled can quietly rack up charges even while the Guernsey eSIM is doing the actual work, so check that setting before you land or dock.
Comparing Guernsey eSIM plans, choosing the right network partner for a Herm or Sark day trip, and installing the Guernsey eSIM card takes a few minutes on home WiFi, and means arriving with eSIM for travel to Guernsey already active, the best eSIM for Guernsey already chosen, and ready before the flight or ferry departs.
Most travelers on a short trip are comfortable with 2 to 5 GB, depending on how much navigation, streaming, and social sharing they plan to do. Use the calculator below to match a plan to your actual usage.
Activity | Avg rate | Intensity | 7β14 day total |
|---|---|---|---|
Google Maps + navigation | 50 MB/hr | ~3 GB 5 hr/day Γ 7 days | |
Instagram, TikTok, social | 700 MB/hr | ~10 GB 1 hr/day Γ 14 days | |
YouTube / Netflix (480p) | 550 MB/hr | ~8 GB 1 hr/day Γ 14 days | |
Work calls + email | 200 MB/hr | ~4 GB 2 hr/day Γ 10 days | |
iMessage, WhatsApp, light | 10 MB/hr | <1 GB Background use |
