Can I use my eSIM the moment I reach Heathrow Airport?

Yes. If you install your Yeohaengyusim eSIM in Korea before departure, it links up automatically with the EE network whether you land at Heathrow (LHR), Gatwick (LGW) or Stansted (STN). You don't need to look for airport Wi-Fi or queue at a SIM stand: you can use Google Maps and transport apps the moment you walk out of the arrivals hall.

Does data work on the London Underground (Tube)?

You can get a 4G connection inside the stations and on some sections of the London Underground's major lines (the Elizabeth line, Jubilee line, Central line and others). However, the signal sometimes drops on deep underground sections. If you download offline maps in Google Maps before you board, you can check your route even underground.

Does data work well in rural Scotland and Wales?

The EE network provides 99% coverage across the United Kingdom. The connection is generally reliable not only in major cities such as Edinburgh and Glasgow but also in natural areas such as England's Lake District and Snowdonia National Park in Wales. However, coverage can be patchy in areas with extremely low population density, such as the remote Scottish Highlands and outlying islands, so it is best to download offline maps in advance for things like hiking routes.

Outlets in the United Kingdom are different from Korea's, so I am worried about charging.

The United Kingdom uses Type G outlets (three rectangular pins). They are not compatible with Korea's Type C or Type F plugs, so you definitely need an adapter. It is convenient to bring an international multi-adapter from Korea, and you can also buy one locally in the United Kingdom at a pharmacy (Boots) or a supermarket (Tesco, Sainsbury's).

Can I still receive calls to my Korean number while travelling in the United Kingdom?

An eSIM does not work by replacing your existing SIM. You keep your Korean SIM as it is and simply activate the eSIM as an extra, data-only line. This means you can still receive calls and texts (especially verification texts) to your Korean number in the United Kingdom. However, be sure to turn off international data roaming on your Korean SIM. It is the most important tip for avoiding bill shock.

Does eSIM work in United Kingdom?

United Kingdom supports eSIM, and plans start from ₩1,492. Install it with the QR code you receive after buying, then just turn on data roaming after you arrive and you are connected straight away. There is no need to swap your SIM.

Travel eSIM or carrier roaming: which is cheaper for a trip to United Kingdom?

For a short trip or light data use, a travel eSIM is usually cheaper. Unlimited roaming from Korean carriers costs about ₩11,000–₩15,000 a day, but with an eSIM you can buy just the days of data you need in advance. For a short trip for one or two people, an eSIM has a big advantage; for a family or very heavy data use, compare carrier unlimited roaming too.

Which carrier network does a United Kingdom eSIM use?

In United Kingdom it connects automatically to local carrier networks such as EE · Three UK · Virgin Media O2 · Vodafone (4G/LTE, 5G where supported). Population coverage is about 99%. It picks the network with the strongest signal automatically, so there is nothing to set up.

Can I add to or extend my United Kingdom eSIM plan?

Yes. When you use up your data or the plan period ends, you can buy a new plan at any time. Keep using the eSIM profile you already installed; there is no need to install it again, so you carry on without interruption.

Can I use tethering (hotspot) in United Kingdom?

Yes. In United Kingdom you can share your eSIM data with other devices such as a laptop or tablet by tethering (hotspot). Shared data also comes out of your plan allowance, so if you tether a lot we recommend choosing a little more data.

Do I set up the eSIM before I leave or after I arrive?

We recommend installing it (registering the QR code) before you leave, while you have Wi-Fi. Data starts when you turn on data roaming after you arrive in United Kingdom. Just remember "set up before you leave, switch on when you arrive" and you can use the internet as soon as you land.

How many GB of data do I need for a trip to United Kingdom?

For mostly maps and messaging, we recommend about 1 GB a day; to use plenty of social media and photo uploads, about 2 GB a day. If you stream a lot of video or tether a lot, an unlimited plan is better. You can always buy more if you run short, so it is fine to choose a little extra at first.

United Kingdom eSIM plans

Instant delivery

A travel eSIM for United Kingdom starts from ₩1,492 and works as soon as you buy it. In United Kingdom it connects automatically to local networks such as EE · Three UK · Virgin Media O2 · Vodafone (4G/LTE, 5G where supported), with population coverage of about 99%. Install it with the QR code before you leave and you can use the internet as soon as you land, with no roaming setup.

Sent instantly by email
30-day refund
Customer support in Korean
Credit card · Apple Pay

United Kingdom eSIM at a glance

Price: From ₩1,492
Local networks: EE · Three UK · Virgin Media O2 · Vodafone
Network: 4G/LTE & 5G
Activation: QR code — install before you leave
Recommended data: Maps and messaging 1 GB a day · more room 2 GB a day · video: unlimited

eSIM plans you can use in United Kingdom

Data	Validity	Price
Unlimited	1 day	₩1,492
Unlimited	3 days	₩6,766
Unlimited	5 days	₩10,533
Unlimited	7 days	₩15,053
Unlimited	10 days	₩21,080
Unlimited	15 days	₩30,874
Unlimited	30 days	₩61,764
1 GB	7 days	₩2,999
2 GB	15 days	₩3,752
3 GB	30 days	₩5,259
5 GB	30 days	₩7,519
10 GB	30 days	₩12,793
20 GB	30 days	₩21,834
50 GB	30 days	₩47,449

Beyond London, with Buckingham Palace and Big Ben, the United Kingdom stretches to the mysterious Highlands of Scotland, the charming scenery of English country villages and the majestic castles of Wales — a country where a new story unfolds with every step you take. Whether you are taking the train to find Harry Potter filming locations, touring museums on the London Underground, the Tube, or admiring the Thames at night from the top of a double-decker bus, at every moment the smartphone in your hand becomes your best guide. But if you waste time swapping SIMs at the airport, or ration your data because you are worried about your carrier's roaming charges, half the excitement of your trip is lost. If you install a Yeohaengyusim eSIM in Korea before departure, Google Maps and Google Translate are on right after landing at Heathrow Airport. Without needing so much as a SIM ejector pin, enjoy every moment in the United Kingdom to the full.

Flight time from Korea

About 12–13 hours (direct flight)

Time difference

9 hours behind Korea (UTC+0, KST-9)

Best season to go

May–September (summer, mild weather)

Plug type

Type G (adapter needed)

Why you really need a travel eSIM for the United Kingdom

In the United Kingdom, many people travel by moving between various cities spread across the country, such as London, Edinburgh, Manchester, Liverpool and Bath. Without train and bus booking apps, real-time transport information and Google Maps navigation, your travel plans can easily go off track. In particular, the London Underground (Tube) is famous for its complicated lines, so a real-time data connection is practically essential. To buy a SIM locally in the United Kingdom, you have to find a shop at the airport or a mobile phone store, which means wasting time and energy from the very first day of your trip. You can buy a Yeohaengyusim eSIM in Korea before departure and install it easily with a QR code. Through the EE network, it boasts 99% coverage across the United Kingdom and supports not only 4G/LTE but also 5G in major cities. You can expect a reliable connection even deep in the Scottish Highlands or while driving along country roads in outlying parts of England. You just keep your Korean SIM as it is and activate the eSIM alongside it, so you will not miss calls or verification texts to your Korean number after you return home either. Even amid variables as unpredictable as the British weather, one Yeohaengyusim eSIM keeps you dependably connected.

Network coverage in United Kingdom

Carrier

+ Three UK

Network

4G/LTE & 5G

Coverage

99%

How do I install a United Kingdom eSIM?

1
Buy a plan
Choose a data plan for United Kingdom and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in United Kingdom, switch data roaming on and you're online.

1
Buy a plan
Choose a data plan for United Kingdom and complete payment.
2
Scan the QR code
Open the email we sent and point your phone camera at its QR code.
3
Install the eSIM
Complete the eSIM installation as prompted. Doing it before you leave is simplest.
4
Connect on arrival
Once you land in United Kingdom, switch data roaming on and you're online.

Which plan is right for me?

Short trip

For a short 3–7 day trip, an unlimited data plan is ideal.

Business trip

We recommend a high-data plan with plenty for video calls and email.

Long stay

Staying a month or more? A large-data plan gives the best value.

Family trip

Families sharing a connection across multiple devices should pick a tethering-enabled plan with a generous data allowance.

eSIM, local SIM or pocket Wi-Fi: what suits a trip to United Kingdom best?

	eSIM	Local SIM	Pocket Wi-Fi
Activation	Instant (QR code)	Buy locally	Pick up / delivery
Setup	2 minutes	SIM swap needed	Separate device
Price	From ₩1,492	₩10,000~50,000	₩5,000~15,000/day
Network	Local 4G/LTE	Local 4G/LTE	Local 4G/LTE
Devices	1 smartphone	1 smartphone	Up to 5
Flexibility	Top up any time	Fixed data	Daily rental
Best for	Ideal for travellers	Long stays	Families / groups

How about these destinations?

France

Italy

Spain

Åland Islands

Andorra

Austria

Belgium

Bulgaria

Croatia

Czechia

Denmark

Estonia

See all Europe eSIMs France eSIM eSIM installation help See all destinations eSIM vs carrier roaming — which is cheaper?How many GB of eSIM data do I need?Best travel eSIM — how to choose

United Kingdom eSIM FAQ

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