Really? My wife has her mobile and work number on my phone contacts (iOS) and I can use the voice command to say: "Call wife on mobile" or "Call wife on work"

Really? My wife has her mobile and work number on my phone contacts (iOS) and I can use the voice command to say: "Call wife on mobile" or "Call wife on work" and it works. I tested this on a 2016 Model X, 2015 Model S and 2019 Model 3.