🇬🇧 eSIM plans for United Kingdom

Starting at $2.70/day*

No data caps
7-days valid
Fast, reliable connection
Skip the roaming bill
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Get your unlimited data

How many days

More days, lower daily rate

How many eSIMs

More eSIMs, bigger discount

Total

—

Get United Kingdom eSIM

Install it now or once you're away. Nothing starts counting until you reach your destination and switch the eSIM on.

* The "as low as" figure is the lowest per-day rate, taken from the longest unlimited data plan on sale here.

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Why buy from us?

Here's how Onetel stacks up against other options in United Kingdom.

Onetel

Local SIM card

Roaming

Uncapped data plans

Activates instantly

Your number stays the same

No surprise charges

No lock-in

24/7 support

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eSIM costs for United Kingdom

Prices shown in USD

7 days of unlimited data in United Kingdom costs $19.24 — about $2.75 a day on EE, Vodafone UK or Three UK, with no roaming charge and no SIM to swap. In United Kingdom, 5G is live and median mobile download speed is 69.9 Mbps.

Duration	Data	Price	Daily cost
1 day	500 MB	$3.64	$3.64/day
3 days	—	$8.52	$2.84/day
5 days	—	$13.88	$2.78/day
7 days	100 MB	$19.24	$2.75/day
10 days	—	$27.30	$2.73/day
15 days	2 GB	$40.70	$2.71/day
30 days	3 GB	$80.96	$2.70/day
180 days	50 GB	$56.00	$0.31/day

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Which networks you connect to in United Kingdom

Your eSIM roams onto United Kingdom's own operators. These are the networks and the frequencies they run — check your phone supports them before you travel.

Operator	4G / LTE bands	5G bands	5G
EE	B1, B3, B7, B20, B28	n1, n3, n7, n28, n78	Yes
Vodafone UK	B1, B3, B7, B8, B20, B32	n1, n3, n8, n28, n78	Yes
Three UK	B1, B3, B20, B28, B32	n1, n28, n78	Yes
O2 UK	B1, B3, B8, B20, B28, B40	n1, n8, n28, n40, n78	Yes

69.9 Mbps

Median download

9.6 Mbps

Median upload

Source: Ookla Speedtest Global Index, August 2025

Coverage in United Kingdom

B20 (800 MHz) is the foundational sub-1 GHz LTE band for rural and indoor coverage across all four operators; foreign phones lacking B20 may experience significant coverage gaps outside urban areas. The London Underground has no mobile service on deep-level tunnels and between stations, though station concourse Wi-Fi is provided.

Common Questions

The details worth knowing about your United Kingdom eSIM

Yes. B20 is the foundational low-band LTE band used by all four UK operators for rural and indoor coverage. Without it, you will likely experience significant coverage gaps outside urban areas, particularly inside buildings and in the countryside.

No. The London Underground has no mobile service on deep-level tunnels and between stations. Station concourses offer Wi-Fi, but not cellular connectivity. Your eSIM will not provide service on the Tube trains or in tunnels.

Your eSIM will connect to one of the four main UK operators: EE, Vodafone UK, Three UK, or O2 UK. The specific operator depends on your eSIM provider's roaming agreement. All four support 4G and 5G, but band support varies.

The UK does not require passport or ID registration for prepaid SIM or eSIM use. You can activate and use the eSIM without providing personal identification to a local authority or retailer.

The facts provided cover only the United Kingdom's mobile networks. Whether the eSIM includes Northern Ireland, the Channel Islands, or the Isle of Man depends on your specific eSIM plan. Check your provider's coverage list for these areas.