With my S2 GPS, I can make calls without my phone being on AT & Ts Wi-Fi calls, but the clock cannot use the Bluetooth headset (airpods) to actually talk through, so I'm left to shout at my arm like a moron.
With S4 I hope you can help me answer two questions:
If I get the mobile version, can you use a Bluetooth headset that is paired directly to the clock to make a call?
Basically the same questions as above, but it would be via WiFi calling instead of mobile.
Note: I'm not talking about the local wifi calls you can make when the phone is switched on in the same Wi-Fi network, I speak the Wi-Fi ring you need to set up through the "other devices" section of your iPhone where the watch can ring completely independently.