I have trouble getting my phone to connect to the car's bluetooth consistently (2017 ES). It connects sometimes, but I have not noticed any specific pattern. I have an iPhone 6S that is up to date on all the Apple-issued updates. Because of this issue, I have already had the car's head unit replaced. When I call Hyundai, they suggest unpairing and re-pairing the phone (which I have done) and pressing the reset button on the front of the dash (which I have done). The Apple Car Play works fine - this seems to be a bluetooth problem only. Anyone else having this problem? Any thoughts? Thanks.