Personal | Business
Sign in or Register
O2 Logo White
  • Shop

    Phones

    • Phones
    • Upgrades
    • Apple iPhone
    • iPhone 16
    • Android phones
    • Refurbished phones

    Tablets, laptops and dongles

    • Tablets
    • Apple iPad
    • Android tablets
    • Laptops
    • Dongles and mobile WiFi

    SIMs and Tariffs

    • Pay Monthly SIMs
    • Pay As You Go SIMs
    • Tariffs
    • International
    • Top-up
    • Essential Plan

    Accessories and more

    • Tech and accessories
    • Apple Watch
    • Smartwatches
    • AirPods
    • Coming soon
    • Great deals
  • Why O2

    Flexibility

    • O2 Switch up
    • O2 custom plans
    • Multisave
    • O2 Recycle
    • Click and collect

    Perks

    • O2 Extras
    • Volt
    • Priority tickets and offers
    • Perks at O2 venues
    • Pay As You Go Rewards

    Services

    • Manage your account
    • Keeping kids safe online
    • Ideas and Inspiration
    • Insurance

    Connected

    • Coverage checker
    • Network coverage
    • 5G coverage
    • O2 WiFi
    • Using your phone abroad
    • Live bigger with Volt

      Discover extra benefits
    • O2 bubbles

      See all the reasons to choose O2

      Why join O2?
  • Help

    Help and support

    • Account
    • Products and services
    • Device guides
    • Network and international
    • Safety and security

    Most popular

    • Activating your SIM
    • eSIM
    • How to track your order
    • Payment support
    • Understanding your bill

    Useful links

    • Store locator
    • Network status
    • Faulty device
    • Virgin Media O2
    • Fraud help

    Contact us

    • O2 Community
    • My O2 App
    • Contact us
  • My O2
  • Search
  • Basket

4G explained

Help and support

4G speeds and coverage

4G speeds will vary depending on location and the number of people using the service. If you’re having issues with your 4G network, use our status checker to identify and report any problems.

Visit our 4G coverage checker to see coverage in your area.

If you're not sure about any techy terms, check out our jargon buster.

Investing in our 4G network

Although our 4G network now covers over 99% of the UK population indoors, we’re committed to improving 4G connectivity across the UK through continued investment and innovation.

As part of the Shared Rural Network, alongside other UK operators, Ofcom and government, we’ll be able to boost UK landmass coverage from 64% to 88% and, for the very first time, bring 4G to 1800 square miles of the UK that have been left with little to no reception.

In June 2024, we completed this first phase of this program, bringing reliable 4G coverage to 227 rural communities across the UK. Find out more here.

As we roll out our 5G network, we’ll continue to create more capacity for customers on our 4G network. One of the ways we’re doing this is by repurposing some of our 3G spectrum to be used for 4G, giving more capacity and increasing speeds. Deploying additional spectrum in this way enabled us to enhance 4G capacity and improve throughout by up to 35% for around 200,000 UK postcodes in 2019.

Last updated: 11/02/2025


Was this information helpful?


Can't find what you're looking for?

My O2

Track your usage, check your bills, upgrade and more

Go to My O2

Need help with your device?

Take a look at our useful self-help guide

Go to help

O2 Community

Head to our forum to ask questions and chat with other O2 customers

Join in
  • Find a store
  • Check our network
  • Sign in to My O2
  • Track my order
  • Search

Popular in shop

  • iPhone 16 Pro Max
  • iPhone 16 Pro
  • iPhone 16
  • Apple Watch Series 10
  • Apple iPad A16
  • Samsung Galaxy S25 Ultra
  • Samsung Galaxy S25
  • Samsung Galaxy Z Flip6
  • Google Pixel 9 Pro XL
  • Google Pixel 9 Pro
  • SIM Only Deals
  • Virgin Media broadband deals

Help and Support

  • Help home
  • Contact us
  • My O2
  • Collection and delivery

Shop

  • Phones
  • Tablets
  • Pay Monthly SIM
  • Collection and delivery
  • Virgin Media O2 Joint Venture
  • Facebook
  • Youtube
  • X
  • Instagram
  • About O2
  • Better Connections Plan
  • Careers
  • News & PR
  • Sponsorship
  • Virgin Media and O2
  • Accessibility
  • Terms & Conditions
  • Privacy policy
  • Cookie policy
  • Modern Slavery Statement

©2025 Telefonica UK Limited

In relation to consumer credit, Telefónica UK Limited is authorised and regulated by the Financial Conduct Authority (Reference Number 718822)

  • Home
  • Help
  • Network and international
  • Network and coverage
  • 4G explained

Related pages

  • Check your IMEI number
  • 5G explained
  • 3G switch off
  • Network support

  • Help