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

SIMs and numbers

Help and support

SIMs and numbers

Learn about activating your SIM and downloading your eSIM to your phone

Activating and using your SIM

Get up and running in no time

Find out more

eSIM

Everything you need to know

Find out more

Download your eSIM for Android

Follow this guide to get your eSIM

Find out more

Download your eSIM for iOS

Follow this guide to get your eSIM

Find out more

IMEI explained

About your device’s unique IMEI number

Find out more

Unblock your phone

Here’s what you need to know

Find out more

2G SIM swap

Here’s what you need to know

Find out more

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
  • Phones and devices

    • SIMs and Numbers