What's the best way to achieve this?
A Pixel 4a and Pixel 6 both running the latest O/S release and if I enter on the dialler "##0702##" I get different results: with the 4a nothing happens, but with the 6 it brings up IMS settings. And is this menu the best way of debugging Wi-Fi calling issues?
Ultimately I'd like to resolve an issue I'm experiencing with Wi-Fi calling on the Pixel 6, where it works fine with the physical SIM but not the eSIM. I can generate custom builds if need be, but first of all I'd like to understand where I should be looking. My carrier (Vodafone UK) doesn't use an app for provisioning settings and this is seemingly done via SMS and to start with I'd like to understand this process better, e.g. what does this do in practical terms and are settings persisted to the O/S somewhere or on the SIM.