I believe the unlock theory is correct...I have to assume (yes I know) the code is there, just not active. This is just word of mouth but my dealer stated it wasn't ready for primetime in 2012/13 so they didn't "activate" it. When I asked why they couldn't ever activate it, they said other things were involved such as a newer HMI module. I do know that I was lied to and have to fork out hundreds for the "fix" if I do want it. I truly wish someone could hack this system for FREE.I'm not sure if the SMS App is installed on top of the CUE system, or simply unlocked the feature that has been hidden in the CUE system. As other members have said, the SMS App exist in our CUE system today, just that it was not "unlocked" to make it available. Not sure what the reason is, but maybe has something to do with validation not complete at the time of roll out, so they kept the feature hidden till MY 15.
http://www.cadillacforums.com/forums/cadillac-escalade-esv-forum-2015/533921-2015-cadillac-escalade-infotainment-hmi-hack.htmlCan you please share the write up with me? I want to know what the experience was like, from pricing to installation. Thanks.