Hi. Samsung S9. It now seems I have Wifi calling. It just appeared, I did not switch it on. For me it is a real pain because there is something I think wrong with our broadband connection so when anyone calls I cannot hear them. I have to phone them back. It is OK if I have wifi switched off and force it to go through the mobile network - but obviously I don't want to keep wifi switched off. I follow the instructions ie "update software" then "settings", "connections" and "wifi calling" - but there is no "wifi calling" in my connections settings - so help - how to I switch this off please.