Sadly, the only option is to turn wifi calling off. there is a script which says "When W-Fi calling is on, your phone can route calls via Wi-Fi networks or your carrier's network, depending on your preference and which signal is stronger." However, I am not consulted as to my preference.
Having done a little research, it appears that it is sometimes possible to toggle between Wifi and mobile preferred settings, but I've not found anyone who says you can do it on this particualr 'phone. Is it likely to be something model-specific?
Possibly but I'm inclined to think not, it's one thing to have the required hardware built in to the phone but that hardware is useless without the software to drive it.
Did you check for any missed software updates as I suggested back in message 6?
Thats me all out of ideas then. Sorry
I have now done that and hope that, when it arrives, it will work with WiFi calling. Thanks for your help, anyway. I may be in touch again.....
No Problem, at least you'll have some come back on BT if the new one doesn't work.