I just upgraded my cell phone from a Moto Bionic which worked well with all Uconnect features that I need. My new Samsumg Galaxy 5S pairs OK, sync'd the contacts, shows signal strength and battery charge. When you try to initiate a phone call with Uconnect, the voice interaction works fine, but the phone rings once then Uconnects says "call disconnected" and drops back to radio or whatever you were doing. The phone shows the call still active but you have to switch phone to speaker and shut off radio to continue call.
Any ideas? Found nothing so far on Samsung forums.