on 25-03-2020 08:01
on 25-03-2020 08:07
If your old SIM is disconnected it should have transferred to the new SIM by now. Have you rebooted the new phone?
What phone is it?
If it won't connect to the network the SIM may be faulty so you'd need to call customer service for a replacement Guide: How to find help & contact O2
on 25-03-2020 08:32
on 25-03-2020 08:34
on 25-03-2020 08:57
on 25-03-2020 08:58
on 25-03-2020 08:58
Change the number on your phone in Settings >Phone >My Number
on 25-03-2020 09:01
on 25-03-2020 09:01
I will give this a go, thank you
on 25-03-2020 09:15
on 25-03-2020 09:15