Cannot register to replacement phone or use phone

[mikeswif_335605]

New phone        screen not showing "smarty".      My settings show 3 UK 01        5g dials out but no connection to home phone. No nothing showing smarty. Any advice gratefully welcome 

[Chalkychap]

Have to tried a NETWORK RESET on your new phone @mikeswif_335605?

The handset user guide usually explains how to do this.
🤞