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Royaume-Uni eSIM: prepaid 5G data for travellers

Connects to O2 on 5G/4G eSIM in Royaume-Uni. Install it before you fly, switch it on when you land. No shop queue, no passport, no roaming bill.

★★★★★5.0 · 8 verified reviews33 plans from $1.99Works on iPhone XR+ & Android

Instant QR by email Validity starts on arrival Keep your own number Hotspot included

3-day plans from$1.99≈ $0.66 per day

Choose your Royaume-Uni eSIM plan

Prices updated 7 Nov 2026

1 · How long are you in Royaume-Uni?

Plan days start at your first connection in Royaume-Uni — buying or installing early costs you nothing.

2 · How much data?

Unlimitedtotal$16.997 daysO2, EE7 Jours$2.43 / day

1GBtotal$2.997 daysEE7 Jours$0.43 / day

3GBtotal$4.997 daysT-Mobile, Telenor, Sunrise, Primetel, O2, Telia, TDC, Orange, Tele2, Elisa, Bouygues, EE, Vodafone, H3G, Bite, Odido, KPN, A1, KyivStar, Beeline, MTS7 Jours$0.71 / day

5GBtotal$6.997 daysT-Mobile, Telenor, Sunrise, Primetel, O2, Telia, TDC, Orange, Tele2, Elisa, Bouygues, EE, Vodafone, H3G, Bite, Odido, KPN, A1, KyivStar, Beeline, MTS7 Jours$1.00 / day

1GBtotal$6.997 daysORANGE, Vodafone, Wind, KyivStar, T-Mobile, Telenor, Sunrise, Primetel, O2, Telia, TDC, Orange, Tele2, Elisa, Bouygues, EE, Bite, A1, H3G7 Jours$1.00 / day

10GBtotal$9.997 daysT-Mobile, Telenor, Sunrise, Primetel, O2, Telia, TDC, Orange, Tele2, Elisa, Bouygues, EE, Vodafone, H3G, Bite, Odido, KPN, A1, KyivStar, Beeline, MTS7 Jours$1.43 / day

2GBtotal$11.997 daysO2, EE7 Jours$1.71 / day

3GBtotal$15.997 daysO2, EE7 Jours$2.28 / day

20GBtotal$15.997 daysO2, EE7 Jours$2.28 / day

Sizes marked only with this trip length hide automatically when you change the days. Running out mid-trip? Top up in the app without a new QR code.

QR code in under 60 seconds

Emailed instantly, and kept in your account and in the app.

Your number stays live

Bank codes and calls keep working on your home SIM.

No ID, no shop queue

Local prepaid SIMs need a passport and a counter visit. This needs neither.

Royaume-Uni eSIM prices at a glance

All 33 plans, tax included

Every Royaume-Uni eSIM plan by data allowance and trip length
Data	3 days	7 days	15 days	30 days
1GB	$1.99$0.66/day	$2.99$0.43/day	$12.99$0.87/day	$25.99$0.87/day
2GB	$5.99$2.00/day	$11.99$1.71/day	$23.99$1.60/day	—
3GB	$3.99$1.33/day	$4.99$0.71/day	$5.99$0.40/day	$6.99$0.23/day
5GB	$5.99$2.00/day	$6.99$1.00/day	$7.99$0.53/day	$9.99$0.33/day
10GB	$7.99$2.66/day	$9.99$1.43/day	$12.99$0.87/day	$14.99$0.50/day
20GB	—	$15.99$2.28/day	$17.99$1.20/day	$18.99$0.63/day
30GB	—	—	$25.99$1.73/day	$29.99$1.00/day
50GB	—	—	—	$37.99$1.27/day
Unlimited	$8.99$3.00/day	$16.99$2.43/day	$36.99$2.47/day	$71.99$2.40/day

Coverage in Royaume-Uni

Local networks

Your Royaume-Uni eSIM connects to O2. The phone selects the strongest available signal automatically.

O2Primary network

5G/4G eSIM in Royaume-Uni.

5G/4G eSIM

Royaume-Uni5G/4G eSIM

Network	5G/4G eSIM
Carriers	O2
Coverage	United Kingdom
Activation	Automatic, activates when connected to a mobile network. Be sure to activate within 30 days after purchase. The Calendar Day in TimeZone UTC +08:00 is applied on the validation date.
Device	eSIM-capable, carrier-unlocked phone.

Network details are supplied by the carrier and can change by region.

How to install and activate your Royaume-Uni eSIM

About 3 minutes

Settings → Mobile Service → Add eSIM

Do this on Wi-Fi before you fly. Tap “Use QR code” and point the camera at the code in your email.

Label it “Royaume-Uni” and leave it switched off

Turn off “Turn On This Line” so nothing connects while you are still at home.

In the air: turn the line on, then pick it for mobile data

Settings → Mobile Service → Mobile Data → Royaume-Uni. Leave your home line as the default for calls and SMS.

Landing in Royaume-Uni?

Install before boarding and switch the line on after landing — no SIM vending machine, no counter queue.

Step-by-step guide →

Royaume-Uni eSIM vs a local SIM vs roaming

eSIM vs SIM vs roaming

Most travellers compare three options. The differences that actually bite are paperwork, wasted days and what happens when you cross into a neighbouring country mid-trip.

	RoamiData eSIM	Airport SIM	Home-carrier roaming
Getting it	Online, QR in a minute	Queue at the airport counter	Nothing to install
ID needed	None	Passport, in person	None
Paid days	Only the days you pick	Fixed packs, often 30 days	Billed per day or per MB
Typical cost	From $1.99	Varies by airport	Depends on your home carrier
Cross-border	Add a regional pass, keep the same eSIM	Buy a new SIM per country	Works, but usually throttled
Your number	Stays live for calls and SMS	Swap the tray, lose it	Stays live
If it breaks	24/7 chat, refund if it never connects	Back to the counter	Call your carrier

Roaming rates vary by carrier; check before you travel. Check your own carrier before you travel — some include Royaume-Uni in a regional bundle.

Four things worth setting up before you land

Install over Wi-Fi

Add the eSIM at home on a stable connection. The QR code arrives by email right after purchase.

Offline maps

Download the map for your destination over hotel Wi-Fi before you set off.

Keep your number

This is a data-only eSIM, so calls and SMS stay on your regular SIM.

Watch your data

Streaming and large uploads use data fastest. Top up from your account if you run low.

What travellers say about the Royaume-Uni eSIM

All 8 reviews →

5.0★★★★★6 verified reviews

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★★★★★ 2years ago

“RoamiData has wide global coverage and is fast to install. I have been to 20 countries and regions and have always used it. It is really safe and convenient. I will still choose to recommend it to my friends in the future.”

Dilusha Gimhan2years ago

★★★★★ 2years ago

“RoamiData covers more than 200 countries and has a lot of data plans. I have used it to go to many places. The network is very fast, the customer service is always online, and the service is very good.”

well-proportioned2years ago

★★★★★ 2years ago

“In the past, I always had to prepare a physical card and need to change a card in each country, which was really inconvenient. This time, a friend recommended me RoamiData Thailand’s data package. The price is very affordable. I will use it when traveling in the future.”

mountains and rivers2years ago

★★★★★ 2years ago

“I have been using RoamiData for many years. It feels very good and the service is excellent. I recommend it to my friends around me.”

Maneswar Pradhan2years ago

★★★★★ 2years ago

“I originally planned to start international roaming for a day, but I didn’t expect that the roaming charges would be as much as the cost of my hotel stay. It was too expensive, so my friend recommended RoamiData to me. I followed the prompts and eSIM, and purchased data according to my needs. So convenient!”

smug2years ago

★★★★★ 2years ago

“I highly recommend RoamiData. The Internet speed is super fast and it is the most convenient application I have ever used. I recommend it to everyone.”

elegant2years ago

Royaume-Uni eSIM questions, answered

Qu’est-ce que l’eSIM ?

eSIM signifie carte SIM intégrée, qui est une technologie de carte SIM numérique standardisée. Il vous permet d'activer et de gérer des forfaits mobiles sans avoir besoin d'une carte SIM physique. L'eSIM améliore considérablement la connectivité réseau, offrant aux utilisateurs des expériences de voyage agréables. Chez RoamiData, vous pouvez choisir le forfait eSIM parfait pour vos besoins et passer un merveilleux moment !

Quand dois-je acheter et activer l’eSIM ?

Vous pouvez acheter eSIM à tout moment, mais veuillez activer le service eSIM après votre arrivée à Royaume-Uni. Une fois l'activation réussie, la date d'activation devient la date de début de votre forfait. Pour éviter des pertes financières inutiles, il est essentiel d'activer l'eSIM uniquement après avoir atteint Royaume-Uni. Nous vous recommandons de finaliser l'achat avant d'atteindre Royaume-Uni. Vous recevrez un e-mail contenant un code QR pour l'activation. À votre arrivée à Royaume-Uni, vous pouvez activer le code QR et commencer à utiliser le service eSIM.

Puis-je acheter de l'eSIM avant d'atteindre Royaume-Uni ?

Certes, vous pouvez acheter un forfait de données eSIM avant d'atteindre Royaume-Uni. Remarque : Veuillez éviter d'activer le service eSIM en activant l'itinérance des données pour cette eSIM avant d'atteindre Royaume-Uni. Au lieu de cela, vous pouvez activer l'eSIM après avoir atteint Royaume-Uni en scannant le code QR reçu lors de votre achat en utilisant le réseau Wi-Fi gratuit disponible à l'aéroport local.

Puis-je activer l'eSIM avant d'atteindre Royaume-Uni ?

Ce n'est pas recommandé car une fois l'activation réussie, la date d'activation devient la date de début de votre forfait. Pour éviter des pertes financières inutiles, il est essentiel d'activer l'eSIM uniquement après avoir atteint Royaume-Uni.

Si j'achète l'eSIM à l'avance, s'activera-t-elle automatiquement une fois atteint Royaume-Uni ?

Non, ce ne sera pas le cas. Vous devrez scanner manuellement le code QR dans l'e-mail après avoir atteint Royaume-Uni pour activer et utiliser le forfait de données eSIM."

Recevrons-nous un package eSIM ?

Une eSIM est une carte SIM numérique et ne contient donc aucun emballage physique. Après avoir passé votre commande, vous recevrez un e-mail contenant un code QR pour activer votre eSIM.

Puis-je utiliser la même carte eSIM sur plusieurs appareils ?

Non tu ne peux pas. Une fois que l’eSIM est activée avec succès sur un appareil, elle ne peut plus être utilisée sur un autre appareil. Si vous souhaitez utiliser le plan de données de cette eSIM sur d'autres appareils simultanément, vous pouvez y parvenir grâce à la fonction hotspot pour le partage de données.

Puis-je utiliser une carte SIM physique et une eSIM en même temps ?

Cela dépend de votre appareil. Si votre appareil prend en charge la double SIM, vous pouvez utiliser deux cartes SIM simultanément ; sinon, vous ne pouvez pas.

Puis-je utiliser mon eSIM en dehors de Royaume-Uni ?

Non, nos eSIM fonctionnent uniquement avec les réseaux cellulaires locaux, vous ne pouvez donc vous connecter à Internet qu'à l'intérieur des frontières de Royaume-Uni.