@Squints What can i say, wi-fi calling Android/sky sim never had an issue in any way. Same with EE on Android/ EE sim apart from when EE wi-fi calling oops'd for a few day's!
I have an iPhone 16 pro with iOS 18.6. with one of Sky's white routers connected to copper. I have no mobile reception at home and therefore use WiFi calling. Intermittently I cannot make a call. Turning WiFi calling off asnd then on sometimes fixes things. The same happens on my wife's iPhone X.
