Did you have any luck with this? I received my Pro1 X a couple of weeks ago. I can make calls, but can't receive them if Location is on. It's extremely intermittent if WiFi is turned on and I'm not close to the router, but fails 100% if Location is on or if I'm really near my router with a strong WiFi signal. The only real way to be able to receive a call is to have everything turned off and to have made an outgoing call within the last minute.
I'll update this if I can get any closer to what works and doesn't for receiving calls. Making calls and data connection is ok.
