Compare eSIM Plans for the United Kingdom

1. 01

   Match the validity to your full trip

   Choose a validity period that covers every day you need mobile data, including your arrival and departure days. Do not assume a plan starts when you land. Some providers begin the validity period when the eSIM is installed, while others start it when the eSIM first connects to a supported network.

   Check the activation rule before installing. A low priced plan can become poor value if its validity starts too early or expires before the end of your trip.

2. 02

   Choose data for the way you travel

   Maps, messaging and occasional browsing use far less data than video, cloud backups, video calls or sharing a connection with a laptop. Pick a fixed data allowance if your use is predictable. Consider a larger or unlimited plan if you expect to work remotely, stream often or use hotspot regularly.

3. 03

   Check the local network partner

   The main mobile networks in the United Kingdom are EE, O2, Vodafone and Three. Vodafone and Three are part of VodafoneThree, but Ofcom still reports their coverage separately while the networks are integrated. International eSIM providers connect through one or more of these local partner networks.

   The local partner matters because coverage and performance vary by location. Check the network shown on each plan, especially if your route leaves the cities or includes the Highlands, upland Wales, the Scottish islands or a rural rail line.

4. 04

   Compare the restrictions, not just the data label

   Two plans with the same data allowance can offer very different value. Compare price per GB, hotspot support, 5G access, top up options and any speed cap. For unlimited plans, read the fair use policy and check how much high speed data is included before speeds are reduced.

5. 05

   Decide whether you need calls and texts

   Many travel eSIMs are data only. You can still use WhatsApp, FaceTime, Signal and other internet-based apps, but you may not receive a British phone number or standard voice and SMS service.

   If you need a local number for calls, restaurant bookings or other services, filter for plans that clearly include voice and SMS. Confirm the number type and the countries covered before purchasing.

Showing 12 of 12 cities and regions, A–Z

1. 01

   Install before departure, but check the start rule.

   Installation at home gives you reliable WiFi and time to solve setup issues. Wait if the provider starts validity at installation.

2. 02

   Protect your primary SIM from roaming charges.

   Keep it active if you need your usual number for calls or verification texts, but turn off mobile data switching and data roaming for that line.

3. 03

   Download maps before the Highlands or an island ferry.

   Coverage is less predictable in the Scottish Highlands, on the Scottish islands and in upland Wales than in London or Manchester. Save maps and tickets before you leave a town.

4. 04

   Expect the signal to change underground.

   The London Underground and rail tunnels can interrupt a mobile signal. Keep tickets and directions available offline.

5. 05

   Confirm the Crown Dependencies by name.

   Jersey, Guernsey, the Isle of Man and Gibraltar are not part of the United Kingdom. A plan covers them only when the provider lists each one.

6. 06

   Treat the Irish border as a new destination.

   Data for the United Kingdom does not automatically continue in Ireland, including on a short crossing from Northern Ireland. France is a separate destination too. The other country has to be on the plan.