Invalid number

[Chris_lm]

Recently changed from monthly phone & airtime contract with o2 to SIM only o2 contract. Kept same SIM.

When l receive call if l do not answer immediately the caller gets a message that number called is invalid. 

There are no network issues in my post code. Have powered phone off then on. Still get error.

Any help to resolve appreciated.

[jonsie]

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: How to find help & contact O2