Help with your sim | Help & Support | O2
Upgrading your sim
Help and support
- Why do I need to swap my sim?
We’re upgrading our network and systems to provide the best possible experience for all our customers. Our original 2G sims are outdated and need to be replaced so you can take advantage of our improved network.
- Do I need to change my phone as well?
You don’t need to change your phone, just your sim card. Once you’ve swapped your sim, all your usual services will work as normal.
- What happens if I don’t do anything?
If you don’t swap your sim, you'll soon be unable to use your mobile on our network. As a result, your usual services will be disconnected.
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