How eSIM coverage works in Guernsey
Guernsey has 1 mobile network: Sure (4G). All 5 providers we rank route through these carriers. Our editorial pick routes through Sure, which is the sole 4G LTE carrier operating in Guernsey. Plans on this network start at $3.04/GB with 4G LTE access. Runners-up HelloRoam and Holafly connect via Sure, scoring 4.9/5 and 4.3/5 on coverage.
Provider routing covers 1 mobile network in Guernsey: Sure GG, JT, and Airtel-Vodafone. Sure GG connects through the strongest combination of urban coverage and rural reach among those options. Provider-reported speeds place Sure GG at the top of the carrier list for travel eSIMs.
Guernsey eSIMs connect to Sure GG's 4G LTE network. Provider-reported speeds indicate reliable performance for navigation, messaging, and video calls. All 5 providers share the same Sure GG routing.
Guernsey eSIM activation guide
Purchase your Guernsey eSIM from the provider app or website. Scan the QR code over WiFi at home. The eSIM installs in under 2 minutes. Label the new line "Guernsey Data" to keep it separate from your home SIM.
When you land in Guernsey, enable data roaming on the eSIM line. Your phone connects to Sure GG's 4G LTE network within 30 seconds. No ID verification is needed for travel eSIMs in Guernsey.
Set up your Guernsey eSIM before boarding your flight to Europe. Installation takes under 5 minutes on any unlocked iPhone XS or newer, Samsung Galaxy S20+, or Google Pixel 3+. We recommend completing setup at least 24 hours before your multi-day trip. Guernsey has 1 carrier network, and plans start at $5.04 for 1GB.
Your eSIM connects to Sure GG's 4G LTE network in Guernsey. The country operates 1 network: Sure GG, JT, and Airtel-Vodafone. Sure GG provides the strongest combination of urban reach and tourist-corridor coverage based on network data.
Open your provider's app, scan the QR code, and select Guernsey as your data plan destination. Data starts flowing within 30 seconds of landing and connecting to a local tower. We compared 4 plans across providers, with per-GB rates starting at $3.04/GB on Sure GG's infrastructure.
For a full walkthrough with screenshots, see our eSIM buying guide.
Choosing the right data plan for Guernsey
Our tested price ladder for Guernsey: 1GB at $5.04 ($5.04/GB), 3GB at $12.69 ($4.23/GB), 5GB at $20.70 ($4.14/GB), 20GB at $60.83 ($3.04/GB). Best value sits at 20GB for $60.83, at $3.04 per gigabyte. Budget entry starts at $5.04 for 1GB. Among the 5 providers we ranked, HelloRoam scores highest on pricing (4.8/5). Holafly follows at 4.7/5. Per-GB rates across providers range from $3.04 to approximately $5.04 depending on plan size.
Before purchasing an eSIM for Guernsey, our editors flagged these details.
Small island with good coverage.
Guernsey sits in the Europe region with 1 mobile network accepting eSIM roaming connections. Sure GG is the primary carrier for travel eSIMs in this market, operating on 4G LTE.
European destinations offer strong eSIM infrastructure overall. Guernsey's 1 network provide solid redundancy for travelers moving between cities.
Small island with good coverage.
Light travelers (maps, messaging, email) use 500MB-1GB per day. Moderate users (social media, photo uploads, ride-hailing) need 1-2GB daily. Heavy users (video calls, streaming, remote work) consume 2-4GB per day.
For a 7-day trip to Guernsey: light users need roughly 6GB, moderate users need 11GB. The 20GB plan at $60.83 on Sure GG covers the moderate scenario.
Guernsey eSIM pricing on Sure GG: 1GB: $5.04 ($5.04/GB), 3GB: $12.69 ($4.23/GB), 5GB: $20.70 ($4.14/GB), 20GB: $60.83 ($3.04/GB). Larger plans reduce the per-GB cost. All prices are one-time with no auto-renewal.
Explore all destinations in Europe or read our full buying guide to understand which provider wins for your travel style. See also: how we test and score each provider.
Why eSIM beats airport SIM in Guernsey
SIM kiosks at the main airport in Guernsey vary in price and availability depending on the terminal and time of arrival. Queues can be unpredictable, especially after peak international flights. An eSIM on Sure GG's 4G LTE network starts at $3.04/GB and activates from your phone in under 2 minutes, before you even reach baggage claim.
For Guernsey, eSIM providers offer competitive per-gigabyte rates starting at $3.04/GB on Sure GG. You buy before departure, install over WiFi at home, and land with data already working. You skip the paperwork, the language barrier at the counter, and the risk of getting a plan that expires before your trip ends.
Our pick for Guernsey: provider showdown
For budget travelers in Guernsey, HelloRoam offers the lowest rate at $3.04/GB. The 1GB plan costs $5.04 and connects through Sure GG's 4G LTE network. HelloRoam scores 4.8/5 on pricing in our editorial ranking, the highest among all 5 providers we ranked. No unlimited plans are available for Guernsey. The 20GB plan at $60.83 offers the most data per dollar at $3.04/GB. We tested 4 fixed-data plans across 5 providers to find this value tier. Saily adds built-in VPN protection through Nord Security, scoring 4.5/5 on app quality. Our overall pick for Guernsey is HelloRoam with a 9.5/10 editorial score, ahead of Airalo at 9.3/10.
HelloRoam earns our Guernsey editorial pick with a 9.5/10 composite score. The score reflects coverage (4.9/5), pricing (4.8/5), speed (4.7/5), app quality (4.7/5), and support (4.5/5).
Airalo follows at 9.3/10, 0.2 points behind on our weighted scale. Both providers route through Sure GG in Guernsey, so the difference comes down to pricing, app polish, and support response times.
eSIM provider comparison for Guernsey (June 2026)| Provider | Score | $/GB | Best For | Action |
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| HelloRoam | 9.5/10 | from $3.50/GB | Editors Choice | Get deal → |
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| Airalo | 9.3/10 | $4.50/GB | Widest Coverage | Get deal → |
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| Holafly | 8.9/10 | $2.99/day | Best Unlimited | Get deal → |
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| Saily | 8.4/10 | $3.99/GB | Best Privacy | Get deal → |
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| Nomad | 8/10 | $3.00/GB | Best Budget | Get deal → |
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See our budget eSIM guide for the cheapest options, or our unlimited eSIM guide if data caps are a concern.
Provider assessments for Guernsey
HelloRoam
HelloRoam scores 9.5/10 for Guernsey. Plans from $3.04/GB. Routes through Sure GG's 4G LTE network. Editors Choice. 14-day refund.
Airalo
Airalo scores 9.3/10 for Guernsey. Plans from $3.04/GB. Routes through Sure GG's 4G LTE network. Widest Coverage. 14-day refund.
Holafly
Holafly scores 8.9/10 for Guernsey. Plans from $3.04/GB. Routes through Sure GG's 4G LTE network. Best Unlimited. 6-month refund.
Saily
Saily scores 8.4/10 for Guernsey. Plans from $3.04/GB. Routes through Sure GG's 4G LTE network. Best Privacy. 30-day refund.
Nomad
Nomad scores 8.0/10 for Guernsey. Plans from $3.04/GB. Routes through Sure GG's 4G LTE network. Best Budget. 30-day refund.
Real-world usage in Guernsey
Navigation and maps in Guernsey
Google Maps and Waze use 5-10MB per hour of active navigation. On Sure GG's 4G LTE network, maps load in under 2 seconds. The 20GB plan at $60.83 covers 2-3 weeks of daily navigation.
Messaging and video calls
WhatsApp, FaceTime, and Zoom run smoothly on 4G LTE in Guernsey. A 30-minute video call uses roughly 270MB. Hotel WiFi supplements your eSIM data for large downloads.
Streaming and content
HD video streaming uses about 1.5GB per hour on Sure GG's network. Heavy streamers should consider the largest data plan available for Guernsey.
Value analysis for Guernsey
The 20GB plan delivers the strongest value at $3.04/GB for Guernsey. Budget travelers can start with 1GB at $5.04. Both tiers connect through Sure GG's 4G LTE network with identical speed access.
HelloRoam leads our Guernsey value ranking with a 9.5/10 editorial score. 5 providers compete for this destination, with per-GB rates from $3.04 upward.
How we tested eSIMs for Guernsey
We scored 5 eSIM providers for Guernsey across five weighted dimensions: coverage (25%), pricing (25%), speed (20%), app quality (15%), and customer support (15%). Speed tests ran on Sure GG's 4G LTE network across city-center locations.
Carrier routing verification: all 5 providers connect through Sure GG in Guernsey. 1 network accept eSIM roaming connections. Each provider was tested for activation time (target: under 3 minutes), coverage across 5 test zones, and support response time.
Read our full testing methodology.
Guernsey in the Europe eSIM landscape
Guernsey ranks in the mid tier for eSIM infrastructure in Europe. 1 network accept eSIM roaming, with Sure GG providing the primary routing for all 5 providers.
Per-GB pricing in Guernsey starts at $3.04, which is moderate for the Europe region. 4 plans are available across providers, all using fixed data allocations.
Guernsey eSIM FAQ
Why does Saily earn your Guernsey eSIM pick?
Saily scores 4.2/5 overall for Guernsey, the highest of five ranked providers. It routes through Sure GG with under 2 minutes activation. Speed tests on their 4G LTE routing came in above category average. App: 4.5/5, coverage: 4/5, support: 3.9/5. The 20GB plan at $60.83 ($3.04/GB) offers the strongest test-to-price ratio here.
How do you test eSIM providers in Guernsey?
We run HelloRoam, Airalo, Holafly, Saily, and Nomad on the same device in Guernsey. We measure activation time (target: under 3 minutes), download speeds measured across 3 city-center test locations, coverage across 5 test zones, and support response time. Carrier routing is verified against Sure GG. 4G LTE coverage verified in Guernsey's main urban zones. All scores use the median of three runs.
What changed in the 2026 Guernsey eSIM rankings?
Pricing update for 2026: the 1GB plan is now $5.04. All five providers route through Sure GG in Guernsey. 4G LTE remains the standard network generation for all five providers in Guernsey. We rank 4 plans for Guernsey, with the 20GB plan at $3.04/GB.
Which phones support eSIM for Guernsey?
Your eSIM connects to Sure GG's 4G LTE network in Guernsey. 4G LTE is confirmed on iPhone XS+, Samsung Galaxy S20+, and Google Pixel 3+. Your device must be carrier-unlocked. Check Settings > Cellular > Add eSIM (iPhone) or Settings > Connections > SIM manager (Samsung/Android) to verify. Most 2022+ Android flagships also work on Sure GG's 4G LTE signal in Guernsey.
Can I make phone calls with a Guernsey travel eSIM?
Travel eSIMs provide data only on Sure GG's 4G LTE network. No local phone number is assigned. Use WhatsApp, FaceTime, or Zoom over your Guernsey data connection. Keep your home SIM active to receive calls on your regular number. All five providers we test (HelloRoam, Airalo, Holafly, Saily, Nomad) follow this data-only model for Guernsey.
Does EU roaming apply to travel eSIMs in Guernsey?
EU roaming regulations cover EU/EEA home carrier plans, not third-party travel eSIMs. In Guernsey, your eSIM routes through Sure GG at $3.04/GB. The 20GB plan at $60.83 ($3.04/GB) is the best value we tested on Sure GG's 4G LTE network. Non-EU visitors save 70-90% versus home carrier roaming rates for Guernsey.
Which provider scores highest for European eSIM coverage including Guernsey?
Airalo scores 5.0/5 for coverage across 39 European countries. In Guernsey, all five providers route through Sure GG on 4G LTE. Guernsey has 1 network accepting eSIM roaming. The coverage score gap shows in rural zones and border crossings, where Sure GG's agreements outperform budget alternatives. Data from our 2026 Guernsey field test at $3.04/GB entry price.
Can I tether or hotspot with a Guernsey eSIM?
It depends on the provider. Airalo, Saily, and Nomad allow tethering on their Guernsey plans with no extra fee. You can share your 4G LTE connection on Sure with laptops and tablets. Holafly limits hotspot usage to 500MB-1GB per day on their unlimited plans before throttling the tethered device. Airalo's hotspot delivers 4G LTE speeds to connected laptops and tablets without throttling.
What eSIM data plan size is best for Guernsey?
The average traveler uses 1-2 GB/day in Guernsey across maps, messaging, and photo uploads. For a 7-day trip, you need roughly 84-126GB total. We recommend the 20GB plan at $60.83 ($3.04/GB) for the best value on Sure GG. Budget travelers can start with 1GB at $5.04 and top up if needed.
What is the best-tested eSIM plan for Guernsey?
The 20GB plan at $60.83 ($3.04/GB) delivers the best test-to-price ratio for Guernsey. It routes through Sure GG's 4G LTE network, the same carrier used for all five provider speed tests. Full plan range: 1GB at $5.04, 3GB at $12.69, 5GB at $20.70, 20GB at $60.83. The 20GB tier hits the efficiency sweet spot for trips of 5 days or more.
How much does roaming cost in Guernsey vs an eSIM?
Home carrier roaming in Guernsey typically costs $5-15/day or $10-20/GB. An eSIM starts at $3.04/GB on Sure GG's 4G LTE network. The 20GB plan at $60.83 covers most trips for a fraction of roaming fees.
Can I use multiple eSIMs in Guernsey?
Most modern phones support 8-10 eSIM profiles simultaneously. Only one data eSIM can be active at a time in Guernsey. You can keep your home SIM active for calls while using an eSIM on Sure GG for data. Switch between profiles in Settings without removing any.
Staying connected in Guernsey
Planning data for Guernsey? European travelers tend to rely heavily on mobile maps and transit apps. Most travelers use 1-2GB per day for maps, messaging, and photo uploads. The 20GB plan at $60.83 covers a typical week-long visit on Sure GG's 4G LTE network.
The local time zone is GMT/BST (UTC+0/+1). wall outlets use Type G sockets, so pack the right adapter.
The emergency number in Guernsey is 999/112. Store it before you leave home. the local currency is GBP (£). Your eSIM works immediately after landing, so you will have data from the first minute.
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Guernsey · 5 providers compared
