Using a Prepaid eSIM in Guernsey: Step-by-Step for 2026

Check your phone compatibility

Choose the right plan for Guernsey

The cheapest plan starts at $5.04 for 1GB. Match your plan size to your trip length and data habits.

Compare all Guernsey eSIM plans and pricing

Install at home over WiFi

What to download before you go

• Offline maps: download Guernsey cities in Google Maps or Maps.me
• Translation app: Google Translate with Guernsey language pack downloaded offline
• Currency converter: XE or Wise for GBP exchange rates
• Provider app: download and log in to Nomad before departure

Dual-SIM configuration

Keep your home SIM for calls and texts. Set the travel eSIM as your cellular data line. On iPhone: Settings > Cellular > Cellular Data > select travel eSIM. On Android: Settings > Network & Internet > SIMs > set travel eSIM for mobile data. iMessage and FaceTime should stay on your home number.

Data roaming settings

Enable data roaming on the travel eSIM line only. Disable data roaming on your home SIM to prevent carrier charges. On iPhone: Settings > Cellular > select home SIM > Data Roaming OFF. On Android: Settings > Network > SIMs > home SIM > Roaming OFF.

APN configuration

Most eSIMs auto-configure APN settings for Sure GG. Verify in Settings > Cellular > Cellular Data Options > Cellular Data Network. If auto-configuration fails, check your provider's email for manual APN values. Manual entry is rare but occasionally needed on older Android devices.

How much data you need

Stretching your data in Guernsey

• Download offline maps before departure (saves 50-200 MB/day)
• Save heavy downloads for hotel WiFi in Guernsey
• Turn off background app refresh and auto-play videos
• Enable Low Data Mode (iPhone) or Data Saver (Android)

Topping up mid-trip

If your plan runs out, buy additional data through the Nomad app. Top-ups apply instantly with no new QR code needed. You can also purchase a second eSIM profile from the same or a different provider.

How to top up your eSIM mid-trip

Recommendation: For Guernsey, install at home before departure using whichever method your provider offers. If you already have the provider app, use it — the guided flow reduces setup errors. If you prefer minimal installs, the QR code method works with just your phone's Settings app and a second screen. Both methods produce the same result: a Guernsey eSIM profile on Sure GG's 4G network, ready to enable after landing at Guernsey's main airport.

Business travelers to Guernsey need data from the moment they land at Guernsey's main airport. A client call in the taxi, a document review at the hotel, or a last-minute schedule change — all require connectivity. A prepaid eSIM on Sure GG's 4G network provides standard LTE speeds, supports hotspot for laptop tethering, and installs before departure. No corporate procurement cycle, no local SIM registration, no IT department involvement beyond confirming the device is unlocked.

Multi-device management

For teams traveling to Guernsey, each device needs a separate eSIM profile. One plan cannot be shared across phones. Purchase one plan per traveler and install all profiles before the team departs. At $5.04 per device for 1GB, a team of 5 costs less than a single corporate international roaming package. Label each eSIM with the traveler's name: "J. Smith - Guernsey" for easy identification in shared IT dashboards. If a team member's phone is company-managed (MDM), confirm with IT that the MDM profile allows eSIM installation — some corporate policies block it.

VPN and security

Guernsey does not restrict VPN or VoIP services. Your corporate VPN works on Sure GG's 4G network without modification. Still test the connection before departure: some corporate VPNs authenticate by IP geolocation and may require IT to whitelist Guernsey's IP ranges. Video calls (Zoom, Teams, Meet) work over the eSIM data without VPN. Use VPN only for accessing internal corporate resources.

Expense tracking

eSIM expenses for Guernsey are straightforward to document. The purchase receipt from your provider (Airalo, Holafly, Saily, Nomad) includes: destination (Guernsey), data amount, validity period, price in USD, and purchase date. Forward the confirmation email to your expense system. Category: "Mobile/Telecom — International." Per-trip cost from $5.04 for 1GB — well below most corporate per-diem communication allowances.

Emergency protocol

Business emergency protocol for Guernsey: the local emergency number is 999/112. This call works from any SIM, even without data. With eSIM data active on Sure GG's network, you can also share your GPS location, contact your company's travel security team via messaging, and pull up local hospital and embassy addresses. Save these contacts in your phone before departure: company emergency line, travel insurance provider, nearest embassy/consulate in Guernsey.

1. Disable the Guernsey eSIM immediately: Settings > Cellular > [Guernsey Data] > turn off "Turn On This Line."
2. Re-enable your home SIM as the primary data line: Settings > Cellular > Cellular Data > select your home SIM.
3. Turn off data roaming on all lines: Settings > Cellular > each line > Data Roaming > Off.
4. Check your Guernsey data usage in your provider app — note remaining balance for records or potential refund.
5. Decide whether to keep or delete the Guernsey eSIM profile (see guidance below).

Your Guernsey eSIM stays on your phone after the trip unless you remove it manually. For repeat travelers: keep it and buy a new plan next time. For one-time visitors: delete it under Settings > Cellular > Remove Cellular Plan. Either way, disable the Guernsey eSIM immediately after returning home — leaving it active may trigger unexpected connection attempts on other networks.