Yes, did the routine one time and have not had to do it since. The wire is just hanging out on the floor. I am using an HTC Rezound.
As far as I can tell I can use them all. I have not done any video but I can use the apps associated with the AppRadio app. Only used Waze just to see if it worked and had no issue and no request for parking brake.
Edit: Just checked video, which will not play unless the wire is grounded. So that is what I was missing. Of note, it did not ask me to set, unset and set the brake as I thought it would. I just grounded and video stared playing. Also, W