Our networks

Our networks

Our networks: At the heart of everything we do

We've been building and operating networks for more than 25 years. In the UK we have over 23 million customers. As part of Telefónica we are the largest integrated fixed and mobile telecoms company in the world, with 300m customers across 25 countries.

Through our own networks and partnerships with other leading operators we can meet all your communication needs. Voice and data. Fixed and mobile. National and international.

Follow our journey. Read our mobile network story.

Keeping people connected while on the go

Our 3G network provides over 84% of the UK population with voice and high-speed data services. The addition of HSPA+ and HSPA+ dual cell, the latest version of 3G technology, means we will soon be offering even faster 3G speeds for our customers.

And we're the only operator that has committed to a regulatory requirement of reaching 98% of the population with indoor 4G coverage by 2017. And we're not going to focus on just one technology and leave others behind. We're doing the same for 2G and 3G. So the majority of people on O2 will get a better experience with voice and data, even if they're not early adopters of 4G.

See full network coverage information.

4G means better business outcomes. Increased productivity. An enhanced customer experience. It will allow more agile working, such as uploading and transferring huge files like video on the go.

Investing for the future

We invest £1.5 million a day in our network.

To help speed things up, we have a pioneering partnership with Vodafone to share network infrastructure.

A single solution for your communications

Our fixed network services encompass landlines, digital lines, telemarketing numbers, business broadband and connectivity for your offices and sites. We also provide telephony equipment. And there's a choice of support packages for all our services.

Find out how O2 fixed services helped save one transport company 52% in costs over three years.

Or how we helped River Island simplify its communications network, saving money too.

Fast, free, easy wifi. For everyone.

O2 Wifi recently celebrated its six millionth customer.

More than 8000 venues around the UK offer O2 Wifi and the number is growing all the time. Anyone can connect for free – even if they're not O2 customers. There's a one-time registration, and then connection is automatic, with no usernames or passwords.

By the end of 2013, we're aiming to provide wifi to 12,000 venues across the UK.

We've also rolled out the service in some of the busiest parts of London. This means customers can get fast, free, reliable wifi in popular areas like Leicester Square, Piccadilly Circus and Exhibition Road.

O2 Wifi's latest partnership, with Westminster City Council and the Royal Borough of Kensington and Chelsea, ensures that London's one million or so daily visitors and commuters can stay online when they're out and about.

The new scheme in London runs at no cost to the council or the taxpayer and spans Exhibition Road, High Street Kensington, Parliament Square, Trafalgar Square, Oxford Street and Regent Street, Leicester Square and Piccadilly Circus.

Find your nearest O2 Wifi venue.

Subject to availability. Fair use policy and terms apply. See o2wifi.co.uk

Worldwide reach with Telefónica

We're part of the global Telefónica family that's present in 24 countries, serving over 300 million customers with IT services and communications, as well as fixed, IP and mobile networks.

Almost 41 million landlines. More than 19 million internet and data connections. And 3 million pay TV accounts.

Telefónica Multinational Solutions

Telefónica owns and operates its own global IP network in more than 40 markets. Through strategic agreements with partners, it provides service in over 170 countries. Giving customers widespread coverage.

Naturally, that includes O2 customers. Making O2 your ideal partner when you need multinational capabilities.

Find out more about Telefónica Multinational Solutions.

Our awards

Don't just take our word for it...

Mobile News Awards 2012 and 2013

Best Network Operator

Which? Recommended Provider

Contract Phone Network March 2012


The least complained about mobile operator in the UK. A level that we've maintained since October 2010

What Mobile Awards 2012

Best Network

Which? Awards 2012

Best Technology Services Provider

Coverage checker

Coverage checker

Check O2's mobile coverage in your area.

Network status checker

Network status checker

See what's happening on the network right now, and where maintenance is being carried out.

Telefónica's network

Telefónica's network

Find out about Telefónica's network all around the world.

Our 4G service will be available in areas with 4G coverage when we launch it. 4G speeds will vary depending on location and the number of people using the service. Potential speed claim based on Ofcom information