Keep old number

[Gardner43]

I recently got an o2 sim. I did everything it told me to do to keep my old number, but now I can not make or receive calls etc

[jonsie · Accepted solution]

We’re just customers like you but it sounds like you’ll need someone to access your account which can’t be done from here. If you message O2 using the links below, they should be able to help you with this

or give them a call on 202  or 0344 809 0202

Guide: Migration & porting into O2  

[Darina]

I had the same problem last year. I had to close down my account because I couldn’t use my O2 sim card  with old phone number once I started a contract with them