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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

Find out more

Keep your mobile number

Bringing your existing number to O2

Find out more

Leaving O2

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

Find out more

Pay As You Go contract summary and contract information documents

The legal stuff about your Pay As You Go account

Find out more

Pay Monthly contract summary and contract information documents

The legal stuff about your Pay Monthly account

Find out more

Unlocking an O2 mobile to use on a different network

If your device is locked, unlock it free of charge

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