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Guernsey eSIM
A 5 GB Guernsey eSIM costs £26.99 for 30 days on Sure with 5G. Plans start at £6.99 for 1 GB. Delivered by email in seconds.
Sure is the mobile network you will find on Guernsey, and your eSIM is set up to use it. Whether you are stopping in St Peter Port for a few days or hopping across to Herm, Sark or Alderney, you can keep messages and maps running without swapping SIM cards.
- 5G and 4G
- 1 network: Sure
- Top up anytime
- Instant email delivery
Your Guernsey eSIM in two questions
Which Guernsey eSIM plan do I need?
Find your trip below and the plan that fits it.
- A long weekend in St Peter Port: For light use, such as maps, messages and email, 1 GB for 7 days suits you well.
- A week touring the island: For standard use, with social media, music and some video, 5 GB for 30 days is the one you want.
- A fortnight hopping to Herm, Sark and Alderney: For standard use, 20 GB for 30 days keeps you going.
- A trip that also takes in Europe: The Europe eSIM covers 41 countries, Guernsey among them, so one eSIM can cover the whole trip.
Every plan can be topped up if you stay longer than planned, and the longest plan lasts 30 days.
All 5 Guernsey eSIM plans
Prices include any taxes. Price per GB shown so you can compare at a glance.
| Data | Valid for | Price | Per GB | Top-up | Buy |
|---|---|---|---|---|---|
| 1 GB · 7 days | £6.99 / €7.99 / $8.99 | £6.99 / €7.99 / $8.99 | Choose | ||
| 3 GB · 15 days | £16.99 / €19.99 / $21.99 | £5.66 / €6.66 / $7.33 | Choose | ||
| 3 GB · 30 days | £16.99 / €19.99 / $21.99 | £5.66 / €6.66 / $7.33 | Choose | ||
| 5 GB · 30 days | £26.99 / €31.99 / $34.99 | £5.40 / €6.40 / $7.00 | Choose | ||
| 20 GB · 30 days | £77.99 / €92.99 / $100.99 | £3.90 / €4.65 / $5.05 | Choose |
Networks your Guernsey eSIM uses
Your eSIM joins this local network automatically, wherever you are in Guernsey.
| Country | Networks | Speed |
|---|---|---|
| Guernsey | Sure | 5G |
Good to know
- Data only: your own number keeps working for calls and texts
- Hotspot works where your phone and the network allow it
- Plans start when you first connect; install within 180 days
- Your data routes through United Kingdom, so some sites may show that country
- Top up the same eSIM any time, no new QR code
Travelling further?
These eSIMs cover Guernsey and more countries on one plan.
Will my eSIM have signal in Guernsey?
In Guernsey, your eSIM joins the Sure network, and Sure runs on 5G. Your phone picks Sure by itself, so there's nothing to choose or set up. Your WhatsApp messages and maps run over that same connection.
Your data reaches the internet through the United Kingdom, which is a normal setup for travel eSIMs. Want the detail? Read our IP address guide.
If your phone asks about data roaming, switch it on for your eSIM. Our data roaming guide shows the steps, and it takes only a minute.
How much data do you need in Guernsey?
Light: maps, messages, email (about 0.25 GB a day). Standard: plus social, music, some video (about 0.7 GB a day). Heavy: plus streaming, video calls, hotspot (about 1.8 GB a day).
3 days
- Light · about 800 MB1 GB · 7 days · £6.99 / €7.99 / $8.99
- Standard · about 2 GB3 GB · 15 days · £16.99 / €19.99 / $21.99
- Heavy · about 5 GB20 GB · 30 days · £77.99 / €92.99 / $100.99
7 days
- Light · about 2 GB3 GB · 15 days · £16.99 / €19.99 / $21.99
- Standard · about 5 GB5 GB · 30 days · £26.99 / €31.99 / $34.99
- Heavy · about 13 GB20 GB · 30 days · £77.99 / €92.99 / $100.99
14 days
- Light · about 4 GB5 GB · 30 days · £26.99 / €31.99 / $34.99
- Standard · about 10 GB20 GB · 30 days · £77.99 / €92.99 / $100.99
- Heavy · about 25 GBPick unlimited or top up
30 days
- Light · about 8 GB20 GB · 30 days · £77.99 / €92.99 / $100.99
- Standard · about 21 GB20 GB · 30 days · £77.99 / €92.99 / $100.99
- Heavy · about 54 GBPick unlimited or top up
How to set up your Guernsey eSIM
Install at home
On Wi-Fi, tap Install on iPhone (iOS 17.4+), scan the QR code, or type the two codes from your email.
Switch on when you land
Turn on your eSIM line, choose it for mobile data and switch Data Roaming on for that line.
You're online
Your phone joins Sure and your plan starts. Check data left on your eSIM page.
Using your phone in Guernsey: data and messaging tips
- Land at Guernsey (GCI) and switch on: Install your eSIM at home on Wi-Fi, then switch it on when you land at Guernsey (GCI). Guernsey sits outside both the UK and the EU, so home roaming allowances often do not apply there. Make sure data roaming is on for the eSIM line, and your phone can connect to Sure, the Guernsey network, which has 5G.
- Getting around: Exploring St Peter Port, or taking day trips to Herm, Sark or Alderney? Keep enough data for a day of island hopping.
- Data for your stay: A week of standard use (social media, music, some video) comes to about 4.9 GB. For a longer stay, 5 GB for 30 days or 20 GB for 30 days gives you more room, and every plan can be topped up.
- Staying in touch: Message friends and family on WhatsApp over your eSIM. Your home number stays on for calls and texts. Here's how to keep WhatsApp and your home number working together.
- Location-checked sites: Some sites check where you are connecting from. Your eSIM can give you a United Kingdom IP address, which helps with those.
Guernsey eSIM questions
How much is an eSIM for Guernsey?
Guernsey eSIMs start at £6.99 for 1 GB over 7 days. A 5 GB plan for 30 days costs £26.99. Prices include any taxes and show in pounds, euros or dollars.
Which networks does the Guernsey eSIM use?
Your eSIM connects to Sure in Guernsey, with 5G where the network has it. Your phone picks the strongest signal automatically.
When does my Guernsey eSIM start?
Most plans start the moment your eSIM first connects to a network in Guernsey, so you can buy and install it at home before you fly. Install it within 180 days of buying.
Can I top up my Guernsey eSIM?
Yes. Most Guernsey plans can be topped up from your eSIM page in two taps, with no new QR code. The plan table on this page shows which ones.
Why does my IP address show another country?
Guernsey plans route your data through United Kingdom, a normal setup for travel eSIMs. Websites and apps may show that country's content; your speed and coverage in Guernsey are not affected.
Does it come with a phone number?
Every eSIMology plan is data only. Keep your own SIM switched on for calls and texts, and use WhatsApp, FaceTime or any calling app over your eSIM's data.
What if my plans change?
Cancel an eSIM you haven't installed within 30 days for a full refund to your card, in two taps from your eSIM page.
Will my eSIM work at Guernsey Airport (GCI)?
Yes. Land at Guernsey Airport (GCI), switch on data roaming for your eSIM, then give your phone a minute to find the network before you head into St Peter Port.
How much data do I need for a week in Guernsey?
For a week of maps, messages and email, about 1.8 GB is typical. Add social media, music and some video and you're looking at about 4.9 GB. Streaming and hotspot use push it to about 12.6 GB, so pick your plan to match your habits.
Is there 5G in Guernsey?
Yes, Guernsey has 5G, so on a phone that supports it, your eSIM can use the 5G network wherever the signal reaches. Coverage can vary from place to place, so keep an eye on the signal bars as you go.
Can I use WhatsApp in Guernsey?
Yes. WhatsApp works in Guernsey on your eSIM, so chats, photos and group messages keep flowing while you explore the island. Sending lots of photos and videos uses more data, so keep an eye on it.
Will my UK roaming allowance work in Guernsey?
Probably not, and it's worth checking. Guernsey sits outside both the UK and the EU, so your home roaming allowance often won't apply there. Check the terms with your provider before you fly.
Which eSIM covers Guernsey and Europe?
The Europe eSIM also covers Guernsey, so if your trip takes you from the island to other European countries, one eSIM can cover the lot. Just check the day count on the plan you pick so it lasts your whole trip.
Ready for Guernsey?
Buy now, install today, and your plan waits until you land. Full refund if not installed.