Carrier networks and LTE coverage in Guernsey
Guernsey has 1 mobile network: Sure (4G). All 5 providers we rank route through these carriers. Our editorial pick routes through Sure GG, which is the sole 4G LTE carrier operating in Guernsey. Airalo's catalogue starts at $3.04/GB with 4G LTE access. Runners-up HelloRoam and Holafly connect via Sure GG, 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. Sure GG sits at the top of the published carrier list for travel eSIM traffic in Guernsey.
A travel eSIM in Guernsey attaches to Sure GG on 4G LTE. All 5 ranked providers ride that same host network rather than one of their own, so the network under a HelloRoam plan and the network under an Airalo plan is the same equipment. Sure GG is the only operator on the published list for Guernsey, which removes any fallback if it drops. This site publishes no throughput figure, because it runs no speed test.
Guernsey eSIM activation, step by step
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. The catalogue lists 4 plans for Guernsey, starting at $3.04/GB on Sure GG's infrastructure.
For a full walkthrough with screenshots, see our eSIM buying guide.
Guernsey data plans, and what each tier actually covers
The published 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. Ladder rates run from $3.04 to about $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: the rubric each provider is scored against.
No published airport SIM price for Guernsey, so compare on setup time
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.
Which provider wins Guernsey when unlimited is not on the table
For budget travelers the pricing dimension is the one to read: HelloRoam publishes an entry rate of $3.50/GB and scores 4.8/5 there, ahead of Holafly at 4.7/5. Plans in Guernsey attach to Sure on 4G, with Sure GG, JT, and Airtel-Vodafone also on the published carrier list. Airalo's Guernsey catalogue undercuts that: the ladder steps from $5.04 for 1GB to $60.83 for 20GB, and the 20GB rung is its cheapest gigabyte at $3.04. Airalo publishes no unlimited daily plan for Guernsey, so the fixed ladder is the only option in this catalogue. Two ground details for Guernsey: emergency calls go to 999/112, and wall outlets take Type G plugs.
HelloRoam earns the Guernsey pick at 9.5/10, with the top mark on network tier, pricing and support. Its published entry rate is $3.50/GB, which the 20GB rung on this ladder beats at $3.04/GB.
Airalo follows at 9.3/10, 0.2 points back, and the ladder this page quotes is Airalo's own Guernsey catalogue, which bottoms out at $3.04/GB.
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 on an entry rate of $3.50/GB, and the best rung on the Guernsey ladder is 20GB at $3.04/GB, below that. Every provider here rides the same host networks in Guernsey: Sure on 4G, plus Sure GG, JT, and Airtel-Vodafone.
Airalo
Airalo scores 9.3/10 on an entry rate of $4.50/GB, and the ladder on this page is its own Guernsey catalogue: $5.04 for 1GB up to $60.83 for 20GB, bottoming out at $3.04/GB.
Holafly
Holafly scores 8.9/10 and sells unlimited only, at $2.99/day, and Airalo's catalogue lists no unlimited plan for Guernsey, so the two do not compare rung for rung here.
Saily
Saily scores 8.4/10 on an entry rate of $3.99/GB, and 1 of the 4 rungs on the Guernsey ladder cost less per gigabyte than that.
Nomad
Nomad scores 8.0/10 on an entry rate of $3.00/GB, and Airalo's catalogue floor for Guernsey is $3.04/GB, over that.
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 Guernsey. The published ladder starts at $3.04/GB.
How the rubric scored eSIMs for Guernsey
All 5 providers are scored on the same five weighted dimensions, every input a figure the provider publishes: coverage 25%, pricing 25%, network tier 20%, app 15%, support 15%.
What the rubric read for Guernsey: a carrier list of 4 operators, with Sure on 4G; a 4-rung published ladder from $5.04 for 1GB to $60.83 for 20GB; a lowest catalogue rate of $3.04/GB, which is Airalo's.
Read the full scoring rubric.
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.
Common questions about using an eSIM in Guernsey
Why does HelloRoam earn your Guernsey eSIM pick?
HelloRoam scores 9.5/10 on our published rubric for Guernsey, the highest composite of the five providers ranked here. Plans for Guernsey route through Sure GG on 4G LTE. HelloRoam refunds an unactivated eSIM for 180 days. Its dimension scores are coverage 4.9/5, network tier 4.7/5, app 4.7/5, pricing 4.8/5 and support 4.5/5. Airalo's published ladder for Guernsey starts at $3.04/GB, with its 20GB plan at $60.83.
How do you score eSIM providers in Guernsey?
The BesteSIM rubric scores HelloRoam, Airalo, Holafly, Saily and Nomad on five published inputs. No figure here comes from a speed test. Coverage carries 25% and reads the operator list for Guernsey, which names 1 carrier network led by Sure GG. Price carries 25%, normalised to cost per gigabyte across every plan size. Network tier carries 20%, app features 15%, and support access 15%, the last read off published support languages: HelloRoam answers in 63, Airalo in 12, Saily in 1. 4G LTE is the network tier published for Guernsey. Every input is a published figure a reader can check.
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. Sure GG publishes 4G LTE service across Guernsey. 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 ranked here (HelloRoam, Airalo, Holafly, Saily, Nomad) sell data-only plans 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. Sure GG carries that routing on 4G LTE in Guernsey. The 20GB plan at $60.83 ($3.04/GB) is the lowest published cost per gigabyte 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 separates providers on how many of those networks each one lists as a partner, not on anything timed in the field. Entry price for Guernsey is $3.04/GB in the 2026 published plan list.
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-scoring eSIM plan for Guernsey?
The 20GB plan at $60.83 ($3.04/GB) takes the highest pricing score for Guernsey, because it holds the lowest published cost per gigabyte in the catalogue. It routes through Sure GG on 4G LTE, the same carrier every one of the five providers uses here. Full plan range: 1GB at $5.04, 3GB at $12.69, 5GB at $20.70, 20GB at $60.83. The 20GB tier suits 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
