Verified coverageUnited Kingdom network
Access to top-tier carriers for a stable and fast connection
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Not sure which plan to pick? Try our data calculator.
Is your device eSIM-ready?
A quick check to see if your phone supports eSIM.
100% secure payment
Multiple payment methods accepted
eSIM London
Our United Kingdom eSIM works in London: the same plans at the same prices as on the United Kingdom page. Data from the moment you land, and your usual number stays on.
London, United Kingdom eSIM plans and prices
4% in SimCoins- Networks
- Three
- Mobile network
- 5G / 4G
- Hotspot / tethering
- Yes
- Top-up
- Yes
- Validity
- 30 days
Unlimited London, United Kingdom eSIM plans: high-speed data every day
- 14-day refund if not activated
- Support within 24 h
- Install before you leave
Need help choosing?
Not sure which plan to pick? Try our data calculator.
100% secure payment
Multiple payment methods accepted
Getting online in London
London is covered by our United Kingdom eSIM, the same plans as the rest of the country. Install it before you fly and you have data from Heathrow onward, for TfL Go, maps and messages. It's data only: your usual number stays active alongside it.
LHRHeathrow Airport
London
Your eSIM connects
As soon as your phone finds a local network. Set the eSIM as your data line and turn on data roaming for it.
Free airport Wi‑Fi
Free Wi‑Fi in every terminal: select Heathrow Wi‑Fi, then register on screen. It stays free for your whole time at the airport. Source, Oct 2026
Local SIM cards
- Three Pay As You Go Data Pack
- £13.50
- 120 GB with unlimited UK minutes and texts, for one month Source, Oct 2026
With Simsima, no passport and nothing to pick up: the eSIM is already in your phone.
Your networks on the ground
The plans on this page connect to these networks in the United Kingdom.
Three5G
EE5G
O25G
Unlimited plans run on Three.
Signal notes
- Westminster
- In June 2026, about 60% of underground Tube stations had 4G and 5G, Westminster among them; TfL aims to cover the whole network by the end of 2026. Source, Jun 2026
- South Bank
- Waterloo (Jubilee line) and Southwark stations have mobile coverage. Source, Jun 2026
- British Museum
- Tottenham Court Road (including the Elizabeth line), Holborn and Russell Square stations have mobile coverage. Source, Jun 2026
- Camden
- Camden Town station (Northern line) has mobile coverage. Source, Jun 2026
Along the way
The same plan follows you everywhere in the United Kingdom, day trips included.
- WestminsterSignal notesBig Ben, Parliament and the Abbey
- South BankSignal notesRiverside walk from the London Eye to Tate Modern
- British MuseumSignal notesBloomsbury, a short walk from Tottenham Court Road
- CamdenSignal notesMarkets and live music, north of the center
- GreenwichRoyal Observatory and the Cutty Sark, by DLR or riverboat
- Oxford or BathA day trip by train, on the same UK plan
Apps worth installing before you go
- TfL GoTube, bus and train
- London's free official travel app: live arrivals, disruption alerts, and it shows when your contactless fares reach the daily or weekly cap. Source, May 2026
- Apple Pay / Google PayContactless fares on TfL
- Tap in and out with the same card or phone and fares are capped by day and week. Overseas cards may carry fees from your bank, and keep enough battery to tap out. Source, Oct 2026
- UberPrivate hire rides
- Licensed by TfL as a private hire operator in London until March 2027. Source, Sep 2024
- BoltRides and black cabs
- Books rides, metered black cabs, and trips to and from London's airports. Source, Oct 2026
- WhatsAppMessages and calls
- Runs over the eSIM's data and stays on your usual number, which remains active alongside it.
Internet in London: eSIM, SIM card or pocket WiFi?
Four ways to get online when you land, and what changes for you.
For a trip in London, an eSIM is the simplest
Installed at home, online as soon as you land, and your number stays active. No counter, no device to return.
| Simsima.Travel eSIM | Local SIM card | Pocket WiFi | Your carrier's roaming | |
|---|---|---|---|---|
| Where to get it | Online, before you fly | On arrival, at an airport counter or store | Rental: a device to pick up, then return | Already in your usual plan |
| When you're online | As soon as you land, installed at home | After buying it locally | After picking up the device | As soon as you land |
| Your number | Stays active on your usual line | Replaced by a local number, your SIM comes out | Stays on your phone | Stays active |
| ID required | None | Depends on the carrier | Depends on the rental company | None |
| Devices | Your phone, hotspot allowed | One unlocked phone | Several devices, battery to charge | Your phone |
| Price | From $1.50 | ≈ $17.85 for 120 GB, 30 days (Three) source | Daily rental | Depends on your carrier |
Prices checked on 2026-10-10 on carrier and rental websites, converted at the day's rate. They may have changed since.
How to install your London eSIM
Install it before you leave: it takes two minutes. These are the real screens of your phone, step by step.
Before you leave: install your eSIMStep 1 of 11
- Open Settings, then Cellular.
- Tap “Add eSIM”.
- Tap “Scan QR Code” and scan the QR code we email you after purchase (it's also in your account).
- “Activate eSIM” opens: tap Continue.
- Choose Abroad, then tap Continue.
- Choose Data Only, then tap Continue. The eSIM is for data; your usual number keeps calls and texts.
- Tap Done. Your iPhone will remind you to turn on the eSIM once you're abroad.
- When you land, your iPhone may show “Turn On Travel eSIM”: tap the notification.
- Choose “Travel eSIM and Current eSIM”, then Continue. You keep your number for calls and texts (bank codes included); your carrier may charge for calls you receive.
- Low Data Mode saves your plan: tap “Turn On Low Data Mode”, or “Not Now”.
- You're set: Cellular Data shows the new eSIM.
After you buy, your QR code arrives by email and in your account. Show it on another screen, then follow these steps on your phone.
Before you leave: install your eSIMStep 1 of 8
- Open Settings, then Connections.
- Tap “SIM manager”.
- Tap “Add eSIM”.
- Choose “Scan QR code”.
- Scan the QR code we email you after purchase (it's also in your account), then tap Add.
- When you land, turn on your new eSIM in SIM manager. It shows the name of a local or partner carrier.
- Choose the new eSIM for mobile data.
- In Connections, Mobile networks, turn on data roaming.
After you buy, your QR code arrives by email and in your account. Show it on another screen, then follow these steps on your phone.
Before you leave: install your eSIMStep 1 of 7
- Open Settings, then Network & internet.
- Tap “SIMs” (Add a network).
- Tap “Set up an eSIM”.
- Scan the QR code we email you after purchase (it's also in your account), then confirm.
- When you land, open your new eSIM (it shows the name of a local or partner carrier) and turn on “Use this SIM”.
- Turn on mobile data for the new eSIM.
- Turn on roaming. If nothing loads, turn off automatic network selection and pick the network manually.
After you buy, your QR code arrives by email and in your account. Show it on another screen, then follow these steps on your phone.
Before you leave: install your eSIMStep 1 of 8
- Open Settings, then Mobile networks or Network & internet.
- Tap “Mobile network”.
- Tap “Add SIM”.
- Tap “Set up an eSIM”.
- Scan the QR code we email you after purchase (it's also in your account), then confirm.
- When you land, open your new eSIM (it shows the name of a local or partner carrier) and turn on “Use SIM”.
- Turn on mobile data for the new eSIM.
- Turn on roaming. If nothing loads, turn off automatic network selection and pick the network manually.
After you buy, your QR code arrives by email and in your account. Show it on another screen, then follow these steps on your phone. On Xiaomi, Oppo or OnePlus the menus have other names: search for “eSIM” in Settings.
Frequently asked questions
What travelers ask before a trip to London.
