Hi: There are 2 "flavors" of WI-Fi calling on iCloud devices. One, is under Settings>Phone, and only allows nearby devices connected to the same WiFi. The other is a switch that appears under Settings>Phone>WiFi Calling AFTER you turn on/enable WiFi calling. It is the same as the option mentioned above under Settings>Phone, EXCEPT you can then receive/make calls from connected WiFi devices even if you are NOT nearby or on the same WiFi. Sprint supports this (I have used it) and Apple documentation "thinks" that Ting supports it. Does Ting? Will this additional "Enable WiFi Calling for Connected iCloud Devices" option appear under WiFi calling after I turn WiFi calling on?
WiFi Calling on iCloud Connected Devices