New to the forum as well as being a new Cadillac owner. I picked up a 2012 SRX Premium last week after deciding to go for the discounts rather than be impressed by QUE and the few new car features. I was disappointed to find no OnStar mobile application for a Window Phone but after a little searching I found an alternative. Check out the review for an app called Volt Link http://www.wpcentral.com/volt-link-b...-windows-phone. While its made for the Chevy Volt is allows you to login to your OnStar account and use mobile features on any OnStar car from what I can tell and seems to work well.