Can’t make outgoing calls or connect to 3G

[Natasha_Jones]

I can only receive calls and access internet via wifi, I can’t make any outgoing calls or comment to the internet via 3G/4G, only works on Wi-Fi. 

[jonsie · Accepted solution]

If you have either upgraded or done a sim swap there is an ongoing issue that O2 are aware of

Some have reported that it could be Friday before this is resolved

Apparently an OS update has been the cause

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