Setup Guide

Set Up Your Guernsey eSIM: Quick Install Guide for 2026

July 20269 min readBy Daniel Mercer, Lead eSIM Analyst

1 network tested
5 providers compared
Updated June 2026

Daniel Mercer

Lead eSIM Analyst

43 countries tested280 plans reviewed14 airports tested8 years in telecom

Previously at Analysys Mason covering APAC mobile markets (2016-2021)

How we test

Published July 2026 · Updated June 2026

Compatibility

Which phones work with a Guernsey eSIM

iPhone

Supported models: iPhone XR, XS, 11 through 16 Pro Max, and SE (3rd generation). Requires iOS 16 or later. iPhones hold up to 8 eSIM profiles with 2 active simultaneously. Check carrier lock: Settings > General > About > Carrier Lock.

Android

Supported: Samsung Galaxy S21 and later (S22-S25, Z Flip/Fold series), Google Pixel 3+, Xiaomi 12T Pro and later. Requires Android 10 or later. eSIM profile limits vary: Samsung holds 5-8 profiles, Pixel supports 8+.

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Full device compatibility list · Check carrier unlock status

Providers

eSIM provider picks for Guernsey

Nomad (Recommended)

Nomad is the recommended provider for Guernsey with a 4.1/5 rating. Best Budget pick. Plans available: 1GB, 3GB, 5GB, 20GB. Installation via QR code delivered by email.

Overall

Install: 4.2/5 · QR Flow: 4/5

Docs: 3.9/5 · Reliability: 4.2/5

Nomad full review

Alternative providers

eSIM providers for Guernsey
Provider	Per GB	Rating	Best For
Nomad#1 Pick	from $3.00/GB	4.1/5	Best Budget
Airalo	from $4.50/GB	4.5/5	Best Overall
Saily	from $3.99/GB	4.4/5	Best Privacy
HelloRoam	from around $3.50 per gigabyte	4.4/5	Coverage + Value
Holafly	from $2.99/day	4.3/5	Best Unlimited

Which provider to choose

Budget travel: Nomad offers the lowest per-GB rate
Broadest coverage: Airalo covers 200+ countries on one account
Unlimited data: Holafly removes the data counter entirely
Privacy: Saily bundles NordVPN under the same account

Installation

eSIM installation: iOS and Android

iOS installation (iPhone)

Open Settings > Cellular > Add eSIM
Select "Use QR Code"
Scan the QR code from your Nomad confirmation email
Label the plan (e.g., "Guernsey Travel")
Set as cellular data line (not your default for calls)
Do NOT enable data roaming yet
Confirm the plan appears under Settings > Cellular

iOS 18: the "Add eSIM" option appears under Settings > Cellular > Add Cellular Plan. iOS 17 and earlier: Settings > Cellular > Add eSIM.

Android installation (Stock Android)

Open Settings > Network & Internet > SIMs > Add eSIM
Select "Scan QR code"
Scan the QR code from your Nomad confirmation email
Name the profile (e.g., "Guernsey Data")
Set as mobile data SIM
Do NOT enable data roaming yet
Verify the plan in SIM manager

Manual installation (if QR fails)

If the QR code does not scan, use manual entry:

Go to Settings > Cellular > Add eSIM
Select "Enter Details Manually"
Enter the SM-DP+ address from your provider email
Enter the activation code
Complete the setup as with the QR method

Use manual entry when: camera cannot read the QR code, the email was forwarded without the image, or you are installing on a second device.

Configuration

APN setup for Guernsey eSIM

Automatic APN configuration

Most eSIM profiles auto-configure APN settings for Sure GG's network. After installation, verify the APN is set correctly:

iPhone: Settings > Cellular > Cellular Data Options > Cellular Data Network
Android: Settings > Network & Internet > SIMs > (travel eSIM) > Access Point Names

A correctly configured APN shows the carrier name and data type. If the APN field is blank, your phone will attempt to auto-fill on first connection.

Manual APN entry

If auto-configuration fails (rare, typically older Android devices), enter APN settings manually. Check your provider's confirmation email for the exact values. Common fields:

APN configuration fields
Field	Value
APN Name	From provider email
APN	Provider-specific value
Authentication	None (most providers)
APN Protocol	IPv4/IPv6

Provider-specific APN values override Sure GG's carrier defaults. Always use the values from your provider, not generic carrier APNs.

Verification

Verifying your Guernsey data connection

Signal and network verification

Check your status bar: the carrier name should show Sure GGor a roaming indicator. Signal bars confirm connection strength. Go to Settings > Cellular to verify data usage is counting on the travel eSIM line.

"Sure GG" or roaming icon: Connected and working
"Searching...": Still connecting, wait 2-3 minutes
"No Service": Data roaming is off or wrong SIM line selected

Speed test

Run fast.com or Speedtest.net to verify your connection speed. Expected speeds: 4G LTE (LTE typically 20-80 Mbps, 5G 100-500 Mbps where available). Speeds vary by location: airports and city centers are fastest, rural areas slower.

Verifying data roaming is active

Go to Settings > Cellular > (travel eSIM) > Data Roaming: ON. Test by opening any website in your browser. If it loads, roaming is active. If not, toggle data roaming off and back on, then restart your phone.

Dual-SIM verification

Confirm your home SIM still receives calls and texts. Confirm the travel eSIM handles all data traffic. Test: send yourself a text message to your home number. Then load a webpage. Both should work simultaneously. If data routes through the home SIM instead, switch your cellular data line to the travel eSIM.

Airport Guide

Arriving at Guernsey's main airport with your eSIM

Before boarding

Set up your Guernsey eSIM before you leave the house. The QR code scan takes 90 seconds over a stable connection. Use your home WiFi, not mobile data or airport networks. After the profile installs, set the eSIM to off so Sure GG does not register it during a layover. The data counter starts on first network connection, not at installation time.

During the flight

Use the flight to prepare your phone settings. Open Settings, navigate to Cellular, and verify the Guernsey eSIM is assigned as your data line. Turn off data roaming on your home carrier line. When you land, the only toggle left is enabling the travel eSIM.

After landing

After touchdown, open Settings, enable the Guernsey eSIM, and turn on data roaming for the travel line. Sure GG registers the profile in 60-90 seconds. Check your status bar for the carrier name and signal bars. SIM counter availability at Guernsey's main airport varies by terminal and time of day. Your eSIM eliminates that variable entirely.

Leaving the airport

Your eSIM gives you data before you clear customs. By the time you reach ground transport, your map is loaded, your ride is booked, and your hotel has your arrival message. Zero idle time at Guernsey's main airport. Guernsey's emergency number is 999/112 — it works without data, but having your eSIM active means you can also share GPS coordinates with emergency services.

Device Setup

Device-specific instructions for Guernsey

iPhone (iOS 17+)

Open Settings > Cellular > Add eSIM > Use QR Code.
Point the camera at the QR code from your provider's email. The profile downloads in 5-15 seconds on stable WiFi.
Tap "Add Cellular Plan" when prompted. Label the plan "Guernsey Data" to distinguish it from your home line.
Go to Settings > Cellular > Cellular Data and select the Guernsey eSIM as your active data line.
Turn on Data Roaming for the Guernsey line only: Settings > Cellular > [Guernsey Data] > Data Roaming > On.
After landing at Guernsey's main airport, toggle the eSIM on. Sure GG registers your profile in 60-90 seconds. APN settings auto-configure for most Guernsey eSIM plans on Sure GG's network.
Verify: open Safari and load any webpage. If the page renders, your Guernsey data is active at 4G LTE speeds.

Carrier confirmation: Your status bar should display "Sure GG" or "JT" with 4G signal within 60-90 seconds. On iPhone, check Settings > Cellular — the Guernsey line shows "Sure GG" under Network. The "4G" indicator confirms your connection type.

Note: If the carrier field shows "No Service" after 2 minutes, go to Settings > Cellular > Network Selection, turn off Automatic, wait 10 seconds, then turn it back on. If Sure GG does not appear in the list, restart your iPhone (hold Side + Volume Down for 3 seconds, slide to power off, wait 30 seconds, power on).

Samsung Galaxy (One UI 6+)

Open Settings > Connections > SIM Manager > Add eSIM.
Select "Scan QR Code" and frame the QR code from your provider's email. The download completes in 5-15 seconds.
Tap "Add" when the carrier profile loads. Label it "Guernsey Data" under SIM Manager for clarity.
Set the Guernsey eSIM as your mobile data SIM: Settings > Connections > SIM Manager > Mobile Data > select Guernsey eSIM.
Enable Data Roaming: Settings > Connections > Mobile Networks > Data Roaming > On (for the travel SIM only).
After landing at Guernsey's main airport, enable the eSIM. Sure GG's 4G network registers within 60-90 seconds. APN settings load automatically for most Guernsey eSIM plans on Sure GG's network.
Verify: open Chrome and load any page. Data flowing confirms your Guernsey eSIM is active.

Carrier confirmation: Your status bar should display "Sure GG" or "JT" with 4G signal within 60-90 seconds. On Samsung, check Settings > Connections > SIM Manager — the travel SIM shows "Sure GG" as the connected network. The connection type shows as "4G".

Note: If "No Service" persists after 2 minutes, go to Settings > Connections > Mobile Networks > Network Operators, switch from Automatic to Manual, wait for the scan to complete, then select Sure GG. If the carrier does not appear, restart the device: hold Power + Volume Down until the restart menu appears.

Google Pixel (Android 14+)

Open Settings > Network & Internet > SIMs > Add SIM > Download SIM.
Scan the QR code from your eSIM provider's email. The profile downloads in under 15 seconds.
Confirm the download and label the SIM "Guernsey Data" for identification.
Set as mobile data SIM: Settings > Network & Internet > SIMs > Guernsey Data > Use for mobile data.
Enable roaming: Settings > Network & Internet > SIMs > Guernsey Data > Roaming > On.
After landing at Guernsey's main airport, enable the profile. Sure GG connects within 60-90 seconds. APN settings self-configure on Pixel devices for most Guernsey plans.
Open Chrome and load any page to verify data connectivity on Sure GG's 4G network.

Carrier confirmation: Your status bar should display "Sure GG" or "JT" with 4G signal within 60-90 seconds. On Pixel, check Settings > Network & Internet > SIMs — the travel SIM displays "Sure GG" as the active network.

Note: If the signal does not register within 2 minutes, go to Settings > Network & Internet > SIMs > Guernsey Data > Advanced > Choose network, switch to Manual, let the scan run, and select Sure GG. If it fails, reset network settings under Settings > System > Reset options > Reset Mobile, WiFi & Bluetooth.

Carrier Config

Carrier troubleshooting for Guernsey

Sure GG

Network selection: Open Settings > Cellular > Network Selection (iPhone) or Settings > Connections > Mobile Networks > Network Operators (Samsung). Turn off Automatic. Wait 10-30 seconds for the carrier list to populate. Select "Sure GG" from the list. The phone locks onto Sure GG's 4G band and data resumes within 30 seconds.

Expected speed: Fastest 4G speeds in Guernsey's urban areas

Common issue: Sure GG's network occasionally delays eSIM profile registration during peak hours at major airports. If your phone shows "Searching..." for more than 2 minutes, turn off Automatic network selection, wait 10 seconds, then select Sure GG manually from the operator list.

Resolution: Restart your phone after adjusting network settings. Sure GG typically completes registration within 60-90 seconds of a fresh boot. If the issue persists, remove and re-add the eSIM profile using the manual activation code from your provider's confirmation email.

JT

Network selection: Open Settings > Cellular > Network Selection (iPhone) or Settings > Connections > Mobile Networks > Network Operators (Samsung). Turn off Automatic. Wait 10-30 seconds for the carrier list to populate. Select "JT" from the list. The phone locks onto JT's 4G band and data resumes within 30 seconds.

Expected speed: Reliable 4G coverage across Guernsey's main cities

Common issue: Some eSIM plans routed through JT require data roaming to be enabled on the travel SIM line specifically. Leaving it off is the most common reason travelers report zero signal after landing in Guernsey. Check under Settings > Cellular > [Travel eSIM] > Data Roaming.

Resolution: Toggle airplane mode on for 15 seconds, then off. This forces a fresh network scan without a full restart. JT should appear in your carrier field within 60 seconds. If it does not, use manual network selection to find and choose JT directly.

Airtel-Vodafone

APN: "airtelgprs.com" — enter under Settings > Cellular > Cellular Data Network (iPhone) or Settings > Connections > Mobile Networks > Access Point Names (Samsung). Leave username, password, and proxy fields blank. Save and restart data.

Network selection: Open Settings > Cellular > Network Selection (iPhone) or Settings > Connections > Mobile Networks > Network Operators (Samsung). Turn off Automatic. Wait 10-30 seconds for the carrier list to populate. Select "Airtel-Vodafone" from the list. The phone locks onto Airtel-Vodafone's 4G band and data resumes within 30 seconds.

Expected speed: Reliable 4G coverage across Guernsey's main cities

Common issue: Airtel-Vodafone may show a signal bar but no data if the APN was not auto-configured. This happens on roughly 10-15% of Guernsey eSIM activations. Enter APN "airtelgprs.com" manually under Cellular Data Network settings.

Resolution: Reset network settings: Settings > General > Transfer or Reset > Reset Network Settings (iPhone) or Settings > General Management > Reset > Reset Network Settings (Samsung). This clears saved WiFi passwords but resolves most Airtel-Vodafone registration failures. Re-enable the Guernsey eSIM after the reset completes.

Dual SIM

Running two SIMs in Guernsey: data line vs call line

Data line setup

Open Settings > Cellular and tap "Cellular Data." Select the Guernsey eSIM. All data now routes through Sure GG's local network at local rates. Do not enable "Allow Cellular Data Switching" — that setting lets the phone fall back to your home SIM for data, which triggers international roaming fees without warning.

Calls and SMS

The home SIM stays on for calls and verification texts. When someone dials your regular number, it rings normally. Standard SMS charges from your home carrier may apply for receiving texts abroad — check your plan. All internet-based communication routes through Sure GG's data network on the Guernsey eSIM.

Emergency dialing

Emergency services in Guernsey are reached at 999/112. Both your home SIM and the travel eSIM can place this call. Data from the eSIM adds GPS location sharing, real-time translation for language barriers, and the ability to look up your embassy's local address and phone number.

Battery impact

Running two SIMs draws 10-15% more battery per day than a single SIM. Both radios maintain separate network connections. If your battery runs low during the day, disable the home SIM temporarily under Settings > Cellular — the Guernsey eSIM is the priority line for data. Re-enable the home SIM when you reach WiFi at your hotel. Guernsey uses Type G outlets — carry the right adapter.

Hotspot

Share your Guernsey eSIM data with other devices

Personal hotspot works with most Guernsey eSIM plans from major providers. Enable it under your phone's settings. The hotspot shares your Sure GG 4G connection with nearby devices via WiFi, Bluetooth, or USB. WiFi tethering has the widest range (roughly 10 meters) but uses more battery. USB tethering charges your phone while sharing data — ideal for laptop sessions. Expect 4G speeds through hotspot, slightly below direct device connection on the connected device.

Provider restrictions

Hotspot availability is a plan feature, not a country restriction. Most fixed-data Guernsey plans support tethering. Unlimited plans are the exception — carriers throttle or block hotspot on unlimited tiers to manage network load on Sure GG's infrastructure. If you need hotspot, buy a fixed-data plan with an explicit hotspot label.

Data impact

Tethering multiplies data use. A single Zoom call uses 300-500 MB/hour. Slack with screen sharing adds 200-400 MB/hour. Background cloud sync on a connected laptop can consume 500 MB-1 GB without any visible activity. Before hotspotting in Guernsey, disable auto-sync and set video calls to audio-only when possible — that drops consumption by 70%.

WiFi Backup

WiFi and eSIM activation in Guernsey

Guernsey has moderate WiFi in urban areas; spotty in rural regions. The best approach: install your eSIM at home over your own WiFi before departure. The QR code scan transfers about 500 KB of profile data — it needs a clean connection, not speed. Airport WiFi at Guernsey's main airport uses captive portals that can interrupt the eSIM download. Install at home, travel with confidence.

Activating without WiFi

If you cannot scan the QR code, use manual entry. Your eSIM provider's confirmation email contains an SM-DP+ activation address and activation code. On iPhone: Settings > Cellular > Add eSIM > Enter Details Manually. On Samsung: Settings > Connections > SIM Manager > Add eSIM > Enter Activation Code. Enter the SM-DP+ address and code exactly as shown. This method uses your existing data connection (home carrier or WiFi) and does not require a camera.

Multi-Country

Guernsey eSIM on a multi-country trip

If Guernsey is one stop on a multi-country European trip (Schengen or cross-border rail), install all country eSIMs before departure. Most phones store 8 or more eSIM profiles. Label each one clearly: "Guernsey Data," "France Data," etc. At each border, disable the previous country's eSIM and enable the next one. The switch takes 30 seconds under Settings > Cellular. A single-country Guernsey plan on Sure GG's 4G network delivers better local coverage than a multi-country regional eSIM — starting at $5.04 for 1GB.

Switching eSIM profiles between countries

At the Guernsey border, open Settings > Cellular (iPhone) or SIM Manager (Samsung). Disable your previous eSIM. Enable the Guernsey profile and set it as the active data line. Turn on data roaming for the Guernsey line. Sure GG's 4G network connects within 60-90 seconds. Do not delete the previous eSIM — you may need it on the return leg.

Fixes

What to do when setup fails

"eSIM Not Supported" error

Cause: Your phone is carrier-locked or the model does not support eSIM.

Fix: Contact your home carrier to unlock (24-72 hours). Verify your model supports eSIM at our compatibility list.

"Unable to Activate eSIM" error

Cause: eSIM profile slot is full, or the QR code was already redeemed.

Fix:Delete unused eSIM profiles in Settings > Cellular. iPhones hold 8 profiles (2 active). If the QR shows as used, contact your provider for a replacement code.

Connected but no data

Cause: Data roaming is off on the travel eSIM, or data is routing through the home SIM.

Fix:Settings > Cellular > select travel eSIM > Data Roaming ON. Also verify: Settings > Cellular > Cellular Data > select the travel eSIM as your data line. Restart your phone after making changes.

Provider-specific installation issues

Airalo: QR code in email and in-app. Re-download available in the app under "My eSIMs"
Nomad: QR delivered by email only. Check spam folder. No app required for installation
Holafly: QR code in app and email. Unlimited plans activate on first connection
Saily: QR in app. VPN configuration separate from eSIM setup

Full troubleshooting guide · Transfer eSIM to new phone

Quick Answers

Common setup questions for Guernsey

FAQ

Guernsey eSIM setup questions

How do I install an eSIM for Guernsey on iPhone?

Open Settings > Cellular > Add eSIM > Use QR Code. Scan the code from your provider email. Label the plan "Guernsey Travel" and set it as your cellular data line. The process takes about 5 minutes over WiFi.

How do I install an eSIM for Guernsey on Android?

Open Settings > Network & Internet > SIMs > Add eSIM. Select "Scan QR code". Scan the QR code from your provider email. Name the profile "Guernsey Data" and set it as your mobile data SIM. Steps vary slightly between Stock Android and other Android versions.

What APN settings do I need for Guernsey?

Most eSIMs auto-configure APN for Sure GG's network. If auto-config fails, check your provider's confirmation email for manual APN values. Go to Settings > Cellular > Cellular Data Options > Cellular Data Network to verify or enter settings manually.

Can I install the eSIM before my trip to Guernsey?

Yes. Install at home over WiFi any time before departure. Do not enable data roaming until you land in Guernsey. Plans count from the first network connection, not from installation. Installing early is recommended.

How many eSIM profiles can my phone hold?

iPhone holds up to 8 eSIM profiles with 2 active simultaneously. Android varies by manufacturer: Samsung supports 5-8, Google Pixel supports 8+. Delete unused profiles in Settings > Cellular to make room for new ones.

What if the QR code does not work for Guernsey?

Use manual activation: Settings > Cellular > Add eSIM > Enter Details Manually. Find the SM-DP+ address and activation code in your provider email. This method works when the camera cannot read the QR code or when using a forwarded email.

How do I know my eSIM is connected to Sure GG?

Check the status bar for "Sure GG" or a roaming indicator. Run a speed test at fast.com. Expected speeds: 4G LTE speeds. If you see "No Service," enable data roaming on the travel eSIM line.

How to set up eSIM on Samsung for Guernsey?