I mentioned to another Cadillac ATS owner that my Windows phone (521) can notify via bluetooth that I have an SMS and read it to me and let me respond all via verbal command only. He asked if I can initiate an SMS but I've never wanted to so don't know. I know that the notification, reading and reply are limited by the phone OS since iPhones and Android can't do this in the Cadillac at least not without 3rd party apps and some tweaking. But some aspects must be handled by the car, so this may not be a question a WP expert can answer unless they also have a 2013-14 Cadillac. Anyone here know how to initiate an SMS via bluetooth and a WP8?