iPad phone
My iPad just started getting my iPhone calls and the iPhone is turned off
Question marked as
When WiFi Calling has been set-up, an incoming call to your iPhone number will “ring” on all devices that are configured to use WiFi Calling on your iPhone Carrier plan. With WiFi Calling enabled, your iPad can make and receive calls independently of the iPhone - even when the iPhone is completely switched-off/shut-down.
Make and receive phone calls on iPad - Apple Support