O2 SIM cards are useful if you already own a mobile handset and either don’t own a SIM card or want to change your existing network or deal. You can get O2 SIM card with:
- A pay monthly contract
- Pay as you go phone
- Independently of handsets and other deals
You can get free O2 SIM cards here, or see the table below to check out some of the deals available from other leading networks.