Building a stronger mobile network for you
We’re dedicated to making your mobile experience the best it can be. On average, we spend £2 million every day into our mobile network to bring you cutting-edge technology and reliable connectivity. We’re committed to keeping you connected, no matter where you are.
Expanding our reach
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Introducing O2 Satellite
O2 are the only UK network to offer satellite-to-mobile connectivity.
O2 Satellite sits alongside our main network, providing coverage in areas the O2 network previously didn’t reach. It’s available as a Bolt On if you’ve got a Pay Monthly contract with us, and will work from the get-go with compatible devices - no extra hardware or apps needed.
That means you can stay connected with services like text messages and location sharing, and apps that matter like WhatsApp, maps and Messenger.
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Improving urban areas
Small cells are an innovative way to add extra network capacity where it's most needed. We have one of the country's largest small cell networks, with over 2000 sites live across the UK.
These small bits of radio infrastructure, often disguised on streetlamps, post-boxes, or phone boxes, can be deployed quickly to boost urban connectivity.
Our small cells are already live in Coventry, Nottingham, Birmingham, Reading and many more areas across the nation.
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Moments that matter
From music festivals and sporting events to staycation hotspots, we can deploy our Cells on Wheels (COWs) to keep you connected in the most Instagrammable places, so you can share the moments that matter without a hitch.
Our COWs have supported the British Grand Prix, Glastonbury, Wimbledon, Goodwood Festival of Speed, and many more events and locations.
Keep commuters connected
Less gaps to mind on the tube
No more worrying about missed calls or buffering podcasts while you travel below the city. O2 customers can get coverage in more than two thirds of tube stations. But it doesn't stop there, because uninterrupted coverage is being rolled out to every station.
Motorway upgrades
In 2023, we jump-started an initiative to improve coverage along key motorway routes, with upgrades already completed on the M5, M11 and M60. More routes will get a boost throughout the coming year, helping to keep you connected on the road.
Railways solutions
With tens of millions of passengers travelling through transport hubs each year, railway stations depend on reliable connectivity. Using a dedicated indoor 5G solution, we've enhanced connectivity at key stations like Manchester Piccadilly and London's Fenchurch Street, keeping you in touch while you're on the move.
Investing in the future
We're switching off 3G
Most of our 3G network has now been switched off across the UK, so that we can focus on our faster, more reliable and more energy-efficient 4G and 5G networks. If you’re still using a 3G-only phone, you’ll need to upgrade to a 4G or 5G compatible device.
5G+
Also known as 5G Standalone, 5G+ is the latest version of 5G technology and runs independently, rather than relying on older network systems. 5G+ unlocks the full power of our network and is our most reliable connection yet. More routes will get a boost throughout the coming year, helping to keep you connected on the road.
Starlink
To extend our network’s reach, we're using Starlink's technology to connect rural sites, providing coverage in more places than ever before.
Our network is a winner
Best Mobile Network for Roaming
2025, 2024, 2023, 2022
Best Mobile Network Coverage
2026, 2025
Most Reliable Broadband Provider
2026, 2025
Can't find what you're looking for?
Coverage claims ‘5G in more places than ever’:
* Based on a threshold of 50% population coverage in a town or city
** Based on outdoor population coverage for customers using a 5G Standalone compatible device