Since Vodafone and Three merged in 2025, the UK has three mobile network operators: EE, O2 and VodafoneThree. All three run 5G standalone (sold as 5G+ by EE and O2, and 5G Ultra by Vodafone) alongside the older non-standalone 5G. Every other brand, from giffgaff to Lebara, rides on one of those three, and many of them do not yet pass standalone through to their customers.
If you bought a 5G phone in 2020, there is a decent chance it has spent most of its life on a 5G connection that was really a 4G connection wearing a 5G badge. That is not a scandal, it is how 5G was designed to launch. But in 2026 the difference finally matters, because the UK networks have built the real thing and are switching it on town by town.
This guide is the map. The detail lives in the linked guides.
- Networks
- Three: EE, O2, VodafoneThree
- Standalone names
- EE 5G+, O2 5G+, Vodafone 5G Ultra
- First to standalone
- Vodafone (2023), then O2 (Feb 2024), then EE (Sep 2024)
- Main 5G spectrum
- 3.4 to 3.8 GHz (n78) for capacity, 700 MHz (n28) for reach
- 3G
- Gone. Every UK network has switched it off
- 2G
- Still on, for now. All networks have committed to switch it off by 2033
The three networks, in one paragraph each
EE (BT Group)
EE was first to launch 5G in the UK in 2019. It launched standalone in September 2024 and now sells it as 5G+. By April 2026 it said 5G+ reached more than 50 million people across over 610 towns and cities. EE only switches a location to “live” once it reckons it has at least 95% outdoor coverage there, which is a sensible bar. Its stated target is 99% standalone population coverage by the end of its 2030 financial year. EE has also been refarming its 2.1 GHz spectrum onto 5G across thousands of sites, which helps indoors and on the upload side, and it offers voice over 5G standalone on compatible phones.
O2 (Virgin Media O2)
O2 switched on standalone in 14 cities in February 2024 and has gone quickly since. In March 2026 it made 5G+ available to pay monthly customers at no extra cost, provided they have a compatible phone and an eligible SIM (one issued from 2024 onwards) or an eSIM. By the summer of 2026 it was quoting around 86% population coverage, driven by a £700 million network plan for the year. O2 aims for at least 90% outdoor coverage in each place it announces.
VodafoneThree
Vodafone was the first UK operator to launch standalone, in 2023, and markets it as 5G Ultra. Three never launched standalone on its own. The two merged in 2025, and VodafoneThree has committed £11 billion to the combined network, with targets of 99% standalone population coverage by 2030 and 99.95% or more by 2034. In 2026 it completed a multi-operator core network upgrade so customers of both brands can use the shared 3.5 GHz spectrum, which Vodafone said gave around 71% of the UK population access to its fastest 5G. Expect this network to change faster than the other two over the next couple of years, simply because it is being rebuilt.
Everyone else is a passenger
giffgaff, Tesco Mobile, Sky Mobile, Lebara, iD Mobile, SMARTY, VOXI and the rest are virtual operators (MVNOs). They rent capacity on one of the three networks. That matters for 5G because the host network decides which features it hands over. In early 2026 many MVNOs still did not offer standalone at all, even where their host network did. If standalone matters to you, ask the brand directly; do not assume you get what the host network advertises.
Business and IoT SIM providers are passengers too. Some buy directly from a UK network, some use a foreign network and roam in, and some do both. That is why two “5G SIMs” in the same router on the same street can behave completely differently. See consumer, business and IoT 5G and multi-network SIMs.
Standalone versus non-standalone, briefly
Non-standalone 5G bolts a 5G radio onto a 4G connection. Your device talks to a 4G mast to get on the network and uses 5G as an extra lane for data. Standalone 5G uses a new 5G core network end to end. It is standalone that delivers the things 5G was sold on: lower and steadier latency, network slicing, RedCap devices and voice over 5G. The full explanation, including how to tell which one you are on, is in 5G standalone vs non-standalone.
Spectrum: why your 5G behaves the way it does
Most UK 5G capacity sits between 3.4 and 3.8 GHz, band n78. It is fast and it is what produces the big speed test numbers, but it does not travel far and it does not love walls. Coverage is filled in with lower bands, especially 700 MHz (n28), which goes further and gets indoors better but carries less. Operators are also moving older 4G spectrum over to 5G as 3G has gone and 4G traffic shifts.
The old idea that UK 5G would be mostly millimetre wave never happened. For everyday purposes, UK 5G is mid-band and low-band. If you are choosing a router or antenna, n78 and n28 support are the two to check first.
What Ofcom says, as opposed to the operators
Operators quote population coverage, usually outdoors, using their own predictions. Ofcom publishes its own figures from operator data with a common method. Its spring 2026 update put outdoor 5G coverage between 76% and 94% depending on the operator, and outdoor standalone coverage between 49% and 85% across the three standalone networks. The gap between those figures and the press releases is mostly about definitions, not dishonesty, but it is a reminder to check a postcode rather than a percentage. The coverage guide covers how.
Where to go next
- 5G SIM cards explained: what makes a SIM “5G”, and why an old SIM can block standalone.
- 5G for business: failover, static IPs, private APNs and when standalone is worth paying for.
- 5G for IoT: RedCap, LTE-M and why most machines do not need 5G yet.
- 5G roaming and eSIM, for anything that crosses a border or a network.
Questions people ask
How many 5G networks are there in the UK?
Three physical networks: EE (BT Group), O2 (Virgin Media O2) and VodafoneThree. Every other mobile brand in the UK is a virtual operator using one of those three.
Which UK network has the most 5G standalone coverage?
It depends whose numbers you use. In spring 2026 O2 reported standalone for over 85% of the population and EE for more than 50 million people. Ofcom measured outdoor standalone coverage of between 49% and 85% across the three standalone networks. Check your own postcode rather than relying on headline percentages.
Do I need a new phone for 5G standalone?
You need a phone that supports standalone and that your network has approved for it, plus an eligible plan and, on some networks, a newer SIM or an eSIM. Most flagship phones from the last few years qualify; cheaper and older handsets often do not.
Is 5G+ the same as 5G standalone?
On EE and O2, yes: 5G+ is the marketing name for 5G standalone. Vodafone calls its standalone service 5G Ultra.