my number was moved from TESCO yesterday.
The phone is Samsung s10E
The SIM manager is showing unknown number.
I got a message from 48 saying...'We are sending you our mobile data settings. Choose save settings & use the PIN 0000. Cheers!'
Do I need to do something?
The phone can receive and make calls.
Ignore that message about settings - it never works.
To configure your internet settings see here:
Other than that, if incoming/outgoing calls/texts are working then you don't have to do anything else.