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All Guernsey eSIM plans compared
| Provider | Price (5GB) | Coverage | Rating | Best For |
|---|---|---|---|---|
| HelloRoam | $20.70 | Sure | 4.9/5 | Best overall |
| Airalo | $16.00 | 200+ countries | 4.5/5 | Most destinations |
| Holafly | Unlimited | 160 countries | 4.2/5 | Heavy users |
Our top 3 picks for Guernsey
We evaluated 4 eSIM plans available for Guernsey, comparing them on verified pricing, network coverage, activation speed, and app quality. Here are the top options.
Pros: Lowest price per GB, fast activation, Guernsey coverage on Sure. Cons: Newer brand, smaller community than Airalo.
| Tier | Duration | Discount | Starting price |
|---|---|---|---|
| Short Stay | 1-2 days | 4% off | $6.43$3.22/day · 2d |
| Week Package | 3-9 days | 8% off | $21.57$3.08/day · 7d |
| Extended Stay | 10-19 days | 11% off | $29.82$2.98/day · 10d |
| Monthly Package | 20-29 days | 15% off | $56.95$2.85/day · 20d |
| Long TermBest Value | 30-365 days | 18% off | $82.41$2.75/day · 30d |
Pros: 200+ countries, top-up available, largest community. Cons: Priced above newer competitors on some routes, support response times can vary.
Pros: Truly unlimited data, full-speed on most plans, live chat support 24/7. Cons: Premium pricing, no per-GB options available.
Network coverage in Guernsey
Sure (operated by Sure Guernsey Ltd) is the primary carrier and dominant telecom provider on the island. JT Group (Jersey Telecom) also has a presence in the Channel Islands. Sure provides 4G LTE and 3G across all populated areas of Guernsey.
UK networks including EE, O2, and Vodafone treat Guernsey as international roaming. Sure is the only carrier offering local-rate eSIM plans for visitors to the island.
Coverage analysis
Sure 4G LTE covers all of Guernsey's populated areas, including St Peter Port, St Sampson, the Vale in the north, and the southern cliff parishes. Guernsey Airport (GCI) connects on arrival. The coastal footpaths circling the island have 4G throughout.
Herm Island (accessible by boat from St Peter Port) has basic Sure coverage in the main areas. Sark, a car-free island also accessible by ferry, has limited coverage. Download offline maps for Sark excursions.
Activation
Install your eSIM QR code before flying into Guernsey Airport (GCI) or taking the ferry from Poole or Portsmouth. Sure activates your plan within minutes of arriving on the island. No registration counter required.
UK travelers should note that their home plan will charge international roaming rates in Guernsey unless specifically included. iPhone XS or newer, Pixel 3a or newer, and Galaxy S20 or newer support eSIM. Device must be carrier-unlocked.
Data usage tips
Budget 350-450 MB per day for cliff path navigation, St Peter Port restaurant guides, WhatsApp, and ferry or bus timetables. The German military fortifications and bunkers from the WWII occupation are scattered across the island — navigation apps use under 50 MB per site. Tax-free shopping in St Peter Port uses minimal data.
Download offline maps for Herm and Sark day trips, as signal is limited on those smaller islands.
How we evaluated plans for Guernsey
Guernsey eSIM plans start at $5.04 on Sure. HelloRoam provides unlimited plans for the island. UK travelers who do not check their roaming status may face unexpected charges; a dedicated Guernsey eSIM is the clean solution.
Guernsey sits in a similar price bracket to other small UK Crown dependencies like Jersey and the Isle of Man.
Best eSIM plans for Guernsey in 2026
| Plan | Network | Validity | Price |
|---|---|---|---|
| Guernsey Data Plan ⭐ | Sure | 7d / 0GB | $5.04 |
Prices verified: May 2026
Questions about Guernsey eSIMs
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Provider reviews
Read our in-depth reviews of the top eSIM providers available in Guernsey.
