I posted this a while back but now that there are a lot more iphone 5S's out there maybe I'll get some feedback. I had an iPhone 5 on Tmobile and HD audio worked great. It was pretty impressive actually the clarity. Now..with the iphone 5S and a new carrier update HD audio has not worked since. I saw something online that the new carrier update disabled it, but it was on just one website. Went on T-Mobile forums and got no feed back. Anyone out there with the same problem?? anyone have any feedback??