Does the network I chose for Fairphone 4 matter? UK

[yvmuell]

Have a look at this thread

WiFI calling on Virgin UK FP4

Hi have just set up a FP4 ,chose it because Virgin UK support WIFi calling and I have no mobile reception at home - so phone useless to me otherwise. The WiFi calling on the dropdown at top of screen remains greyed out. If I go somewhere with reception I can make calls, but WIFI calling still remains greyed out. Also the contacts on my SIM are not recognised, only the ones I transferred using Google Play account. Virgin say it is a problem for Fairphone, and Fairphone support say I to ask BT sh…