Rubric Scorecard · Guernsey

eSIM for Guernsey: 5 Providers Scored and Ranked (2026)

Updated June 2026By The Awards Panel✓ Prices verified June 2026

The quick answer

HelloRoam leads the Guernsey eSIM rankings at $3.50/GB on Sure GG's 4G LTE network, ahead of Airalo at $4.50/GB and Nomad at $3.00/GB. Airalo lists Guernsey from $3.04/GB, with its 20GB plan at $60.83. HelloRoam scores 9.5/10 on our published rubric. 5 providers scored for Guernsey. Budget pick: HelloRoam at $3.50/GB. Unlimited option: Holafly at $2.99/day. Sure GG routes all 5 providers through 1 network in Guernsey. Airalo's catalogue starts at $3.04/GB.

How Guernsey scored

We evaluated eSIM options for Guernsey using provider plan data and Sure GG's network specifications. 3 carrier networks accept eSIM roaming connections in Guernsey: Sure GG, JT, and Airtel-Vodafone. 4 plans from 5 providers form the basis of our comparison. Pricing starts at $3.04/GB on 4G LTE.

Guernsey's 3 networks give providers real carrier options: Sure GG, JT, and Airtel-Vodafone. Sure GG is the primary routing partner for all five providers, on published coverage breadth.

The pricing ladder spans from 1GB at $5.04 ($5.04/GB) to 20GB at $60.83 ($3.04/GB). Best per-GB value sits at 20GB for $60.83 ($3.04/GB), our recommended tier for most Guernsey travelers. No unlimited daily option is available for this destination. All fixed-data plans deliver full 4G LTE speed until the data cap is reached, with no mid-plan throttling.

Network coverage in Guernsey concentrates around urban centers and major transport routes. Sure GG provides the most consistent signal for travel eSIM users.

HelloRoam earns the top position for Guernsey at 9.5/10, with Airalo close behind at 9.3/10. These scores reflect Guernsey-specific conditions: Sure GG routing, 4 available plans, and 4G LTE as the network standard. Rankings may differ for neighboring Europe destinations where carrier partnerships and plan availability change.

What the rubric scores

The rubric ranked 4 eSIM plans from 5 providers for Guernsey on five dimensions: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), Support access (15%). Each provider takes a 1-5 mark per dimension, and the weighted total is doubled to give the /10 display score.

Where the inputs come from

Scores for Guernsey use the published weighted formula: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), and Support access (15%). Each dimension receives a raw score from 1 to 5. The composite multiplies by 2 for a 0-10 display scale. Coverage and Pricing carry equal top weight because for travel eSIMs, network reach and cost matter most.

Country-specific adjustments for Guernsey: Single-carrier markets like Guernsey receive a ceiling of 4.0/5 on Coverage, since no failover redundancy exists. These calibrations keep scores comparable across the 185+ destinations in our database.

The scoring spread across 5 providers for Guernsey is 1.5 points (HelloRoam at 9.5/10 down to Nomad at 8.0/10). A spread under 1.5 points indicates that all providers deliver comparable service for this destination. The wider gap here reflects meaningful differences in pricing, coverage, or support quality.

Read the full scoring rubric.

BesteSIM runs no speed tests and publishes no throughput figure for Guernsey. The network-tier score reads the technology each carrier publishes, which is 4G LTE here.

Guernsey Network Landscape

Guernsey has 1 mobile network: Sure (4G). Sure GG delivers the strongest coverage combination. All 5 providers route through these carriers.

Carrier Partnerships

Guernsey operates 1 mobile network: Sure (4G). Sure GG serves as the primary routing partner for travel eSIMs in this market. All five ranked providers route exclusively through Sure GG. Single-carrier markets offer no failover, which affects the Coverage dimension of our scoring.

Sure GG publishes 4G LTE across Guernsey, and every ranked provider attaches to it rather than to a network of its own. Single-carrier coverage means no automatic failover. Coverage quality depends entirely on Sure GG's tower infrastructure and geographic reach in Guernsey.

Sure GG's 4G LTE network handles all travel eSIM traffic in Guernsey. Provider differentiation comes from plan pricing ($3.04/GB entry), app features, and support channels rather than carrier routing choices.

Review Timeline

Plans and pricing for Guernsey were last verified in May 2026. All 4 plans confirmed active on Sure GG's 4G LTE network. Provider scores reflect the most recent data available for this destination.

Guernsey rankings update on a quarterly cycle. Plan pricing is checked monthly against provider websites. Carrier routing changes trigger an immediate score recalculation for all five providers. Network changes in Sure GG's Guernsey infrastructure are tracked through industry sources.

Top Pick: HelloRoam (9.5/10)

Why HelloRoam Wins in Guernsey

Editors Choice

9.5/10

Choose HelloRoam for the combination of broad 186-country coverage and competitive per-GB pricing. Our highest-scoring provider of 2026 at 9.5/10. The localized currency support is a differentiator for travelers outside the US dollar zone. For unlimited data, Holafly remains stronger. For the widest country count, Airalo covers 200+.

HelloRoam routes through Sure GG in Guernsey, delivering 4G LTE speeds. The best-value plan is 20GB at $60.83 ($3.04/GB).

Score Breakdown

Dimension	Weight	Raw Score	Weighted
Coverage	25%	4.9/5	9.8/10
Speed	20%	4.7/5	9.4/10
App	15%	4.7/5	9.4/10
Pricing	25%	4.8/5	9.6/10
Support	15%	4.5/5	9.0/10
Total	100%		9.5/10

Why This Award

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.

Best Plan on the Published Ladder

Airalo's recommended plan for Guernsey: 20GB at $60.83 ($3.04/GB). A moderate traveler using 1.5GB/day for 7 days needs 11GB. The 20GB plan covers that with headroom.

Get HelloRoam for Guernsey →

Runner-Up: Airalo (9.3/10)

Where Airalo Excels

Airalo outscores HelloRoam in Coverage (10.0 vs 9.8), App (9.8 vs 9.4).

Airalo trails HelloRoam on Speed, Pricing, Support.

Dimension	HelloRoam	Airalo	Winner
Coverage	9.8/10	10.0/10	Airalo
Speed	9.4/10	9.0/10	HelloRoam
App	9.4/10	9.8/10	Airalo
Pricing	9.6/10	8.8/10	HelloRoam
Support	9.0/10	8.6/10	HelloRoam

When to Choose Airalo Over HelloRoam

Choose Airalo for the widest coverage (200+ countries) and the strongest app experience. Ideal for multi-country itineraries. Full Airalo review.

Budget Pick: $5.04 Entry Point

Who the Budget Pick Fits

Light travelers visiting Guernsey for 1-3 days. Maps, messaging, and email only. Around 0.5GB/day usage. First-time eSIM users wanting a low-risk trial. The cheapest plan is 1GB at $5.04.

Budget vs Top Pick Value

The 1GB plan costs $5.04. The best-value 20GB plan costs $60.83 at $3.04/GB. You pay $55.79 more but get 20.0x the data.

The network behind every plan 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.

Network tier

Sure GG publishes 4G LTE service in Guernsey, and every eSIM sold for this destination attaches to it. BesteSIM runs no speed test, so there is no download figure on this page: the network-tier score reads the published technology instead.

Network profile: Sure GG publishes 4G LTE across Guernsey. All 4 plans ride that same carrier at that same tier.

What that tier is built to carry

4G LTE carries HD streaming, video calls, and navigation.

Activation Experience

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.

Pre-Departure Setup

Buy the 20GB plan from HelloRoam online.Scan the QR code over WiFi. Label the new line "Travel Data." Set as your data line. Keep your home SIM for calls. Activation completes in under 3 minutes.

On-Device Activation

iOS: Settings > Cellular > Add eSIM > Scan QR Code. Rename to "Guernsey Data." Set as default data line.

Android: Settings > Connections > SIM Manager > Add eSIM. Rename to "Guernsey Data." Set as default data line.

Post-Landing Verification

Turn off airplane mode. Check status bar for Sure GG. Open a browser to verify data works. Run a speed check at fast.com. Keep home SIM data roaming OFF.

Coverage Assessment

Coverage verdict for Guernsey: Basic. Guernsey has limited eSIM infrastructure that covers major cities only. 1 carrier network accept eSIM roaming, with Sure GG providing primary coverage on 4G LTE. Coverage holds in urban centers and along major transport corridors.

Single-carrier coverage means dead zones are possible in rural areas. Download offline maps and save boarding passes before leaving urban zones.

Based on Guernsey's coverage profile, we recommend the 20GB plan at $60.83 ($3.04/GB). Plan for 1-2GB per day for typical travel use. Sure GG's 4G LTE network supports all common travel tasks in covered areas. Pre-download critical maps and documents regardless of coverage quality. It is the single best preparation step for any eSIM trip.

Coverage assessment: 1 network accept eSIM roaming in Guernsey. Sure GG provides primary coverage for urban and tourist areas.

Urban Coverage

Guernsey has 1 mobile network. City center coverage on Sure GG's 4G LTE network is reliable. All 5 providers route through these carriers.

Rural and Transit Coverage

Coverage outside major cities depends on carrier reach. Rural areas may fall back to 4G speeds. Download offline maps before leaving urban areas.

Coverage Gaps and Workarounds

Small island with good coverage

Field Observations

European mobile infrastructure is among the most mature globally. Guernsey benefits from established carrier agreements that make eSIM roaming reliable across urban and rural zones.

Guernsey operates on 4G LTE for eSIM travel connections. Sure GG is the primary carrier handling roaming agreements.

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

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.

Cost Breakdown

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.

All Providers Assessed

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.

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.

Verdict

Who Should Buy

General travelers: HelloRoam at 9.5/10. The best overall pick for Guernsey.

Heavy data users: The 20GB plan at $60.83 is the largest available fixed plan for Guernsey.

Budget travelers: HelloRoam starting at $5.04.

Privacy-conscious: Saily with built-in VPN from Nord Security.

Final Scores

Provider	Coverage	Speed	App	Pricing	Support	Total
Top score HelloRoam	9.8	9.4	9.4	9.6	9.0	9.5/10
Airalo	10.0	9.0	9.8	8.8	8.6	9.3/10
Holafly	8.6	8.8	8.6	9.4	9.0	8.9/10
Saily	8.0	9.0	9.0	8.2	7.8	8.4/10
Nomad	7.4	8.2	7.8	9.2	6.8	8/10

Frequently Asked Questions

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.

What happens when my Guernsey eSIM data runs out?

When your 20GB plan runs out, most providers let you top up instantly from the app. Airalo and Nomad both offer same-country top-ups from the app. Airalo's published ladder for Guernsey starts at $3.04/GB. Holafly unlimited plans do not run out. No new QR code scan is needed for top-ups on Sure GG's network.

Which eSIM scored highest for Guernsey in 2026?

HelloRoam scores 9.5/10 for Guernsey based on coverage (9.8/10), speed (9.4/10), app quality (9.4/10), pricing (9.6/10), and support (9.0/10). Best-value plan: 20GB at $60.83.

How did you score eSIM providers for Guernsey?

The rubric scores 5 providers on five weighted dimensions: Coverage (25%), Pricing (25%), Network tier (20%), App features (15%), Support access (15%). Routing for Guernsey runs through Sure GG at 4G LTE, read off the published operator list. Every input is a published figure and none of them is a speed test.

Is HelloRoam the cheapest eSIM for Guernsey?

HelloRoam takes the value pick here at $3.50/GB. Airalo's published ladder for Guernsey reaches $3.04/GB on the 20GB plan at $60.83. The smallest plan published is 1GB at $5.04. Per-GB cost drops with larger plans.

Does HelloRoam work with 5G in Guernsey?

4G LTE is the primary speed tier in Guernsey. eSIM providers connect through Sure GG's network, delivering the same speeds as local SIM cards.

What network does an eSIM use in Guernsey?

An eSIM in Guernsey attaches to Sure GG at 4G LTE, the tier published for that network. 4G LTE carries HD streaming, video calls, and navigation. All 5 ranked providers ride the same carriers, so the network is identical whichever one you buy. BesteSIM publishes no throughput figure for Guernsey because it runs no speed test.

More about eSIMs for Guernsey

Compare all plans for Guernsey Check eSIM compatibility eSIM vs carrier roaming eSIM buying guide

Get our top pick for Guernsey

HelloRoam scores 9.5/10. 20GB at $60.83. Sure GG 4G LTE network.

Get HelloRoam →Read the HelloRoam review

More Europe destinations scored

See which eSIM wins in other Europe countries.

Francefrom $0.61/GBSee scorecard →

Germanyfrom $0.61/GBSee scorecard →

Turkeyfrom $0.65/GBSee scorecard →

United Kingdomfrom $0.66/GBSee scorecard →

Italyfrom $0.68/GBSee scorecard →

Spainfrom $0.72/GBSee scorecard →

* Affiliate links. We earn a commission at no extra cost to you. Learn more

Guernsey's 3 networks give providers real carrier options: Sure GG, JT, and Airtel-Vodafone. Sure GG is the primary routing partner for all five providers, on published coverage breadth.

Network coverage in Guernsey concentrates around urban centers and major transport routes. Sure GG provides the most consistent signal for travel eSIM users.