One thing that always worked for me on iOS but never on Android was triggering Siri from a standard bluetooth head unit. I could hit the "call" button and it w

One thing that always worked for me on iOS but never on Android was triggering Siri from a standard bluetooth head unit. I could hit the "call" button and it would launch Siri and I could say "message my wife" or a plain "read me my messages". Despite loads of mucking about, installing and buying 3rd-party utilities, I could never get Android to do the same (and Google Now would never "read me my texts" and often "text my wife" would say it had sent but would never arrive). I'm sure it's easy with Android Auto, but I have old cars and I'm not shelling out for a head unit that costs almost as much as the car itself.