Call with Wi-Fi Calling - Apple Support

Make phone calls with Wi-Fi when you have little or no cellular coverage.

Using Dual SIM with an eSIM - Apple Support

iPhone 13 (iOS 16.1) Strange WiFi calling… - Apple Community

How to Make Wi-Fi Calls on Android Smartphones

HCS Technology Group - HCS Blog - Wi-Fi Calling and Wi-Fi Assist

iPhone Calls Not Available Your iPhone m… - Apple Community

Apple iPhone X - Wi-Fi Calling - AT&T

Make phone calls on Apple Watch - Apple Support

Kinta Wi-Fi

Apple now lists 20+ more carriers w/ Wi-Fi Calling and or VoLTE

Vi Wi-Fi Calling Rolls Out For Apple iPhone After The iOS 14.5