Not Registered on Network

[KathyB]

I am getting the above message and unable to receive or make calls. It has only happened today

Please advise. Thanks

[jonsie]

Reboot the phone

Clean sim card if necessary

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