O2

I logged a call with the help desk, still no solution. It's definitely an O2 network issue as its the same on my , my wifes and my work phone/sim. So all 3.The common factor being that all on the O2 network!I can see why O2 can't fix this, as was fin...

Thanks all.I've tried everything. Wifi, wifi calling off.5g, lte off, still no joy.I'll contact customer service tomorrow.

I get the messageConnection problem or invalid  mmi code. Thanks 

I've tried that and it does not work, I get an error message ,I have tried 901+447802091901And my actual phone number but still get error.