wrong device shown in my O2 account

[hhh111jjj]

The wrong device (and IMEI ?) are shown in my account since I changed my phone and had to use a new SIM which was changed to my original phone number. How do I get the account device details changed to show the new phone details?

[MI5 · Accepted solution]

@hhh111jjj 

In theory, it should update automatically.

If it doesn't, you'll need to call O2.

All numbers are in this guide Guide: Coronavirus Community Help and Support 
Or 202 from your O2 mobile.
Advice from an O2 Guru to get through:
When you call 202, you will be asked for the reason you are calling.
Stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
You can also try saying "Upgrade" or "Fraud" to be connected to an advisor.