Joining and leaving O2

Help and support

Joining and leaving O2

Information on joining O2, keeping your number, and how to cancel your account

How to disconnect your non-O2 number

If you’ve joined us and want to ditch your old number, here’s what you need to do

Keep your mobile number

Bringing your existing number to O2

Leaving O2

We don’t want you to go, but if you do, here’s what you need to know

Pay As You Go contract summary and contract information documents

The legal stuff about your Pay As You Go account

Pay Monthly contract summary and contract information documents

The legal stuff about your Pay Monthly account

Unlocking an O2 mobile to use on a different network

If your device is locked, unlock it free of charge

Can't find what you're looking for?

My O2

Track your usage, check your bills, upgrade and more

Need help with your device?

Take a look at our useful self-help guide

O2 Community

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