Yes, I also had an IPhone 5S with Sprint service for my 2014 Buick Enclave. As a Realtor I needed to depend on the Buick Intellilink, and wanted to consider it as a valuable working tool. Instead what I got was the most worthless piece of SHIT I have ever used. Voice commands just do NOT work. My car was back to the dealer for service concerning this problem several times. They can’t get it to work either. They referred me to GM. According to GM, I am the only person who has EVER reported such a problem. They suggested it was me for not understanding proper working procedures. Guess what, I know how to activate the voice command and speak!!!! I guess my servicing dealer doesn’t understand the proper way to get it to work either. I liked the Enclave so much, that I traded it for a 2015 to resolve the problem. It worked great at delivery time. Then within days back to the same old problem. Nobody seems to be able to explain or fix the problem. Then I considered changing phones to the iPhone 6 to resolve the problem. Now reading that others are having the same problem at least confirms the problem is not limited to just me. Getting a new phone doesn’t sound like the correct solution either. The new GM is just the same as the old GM. I spent and lost lots of $$$$$ being a loyal Buick owner, only to be frustrated again. I have a worthless system. Please anyone got any suggestions other then don’t buy a Buick with Intellilink? [email protected]