It's like the SYNC system doesn't start up sometimes. Sometimes I get in the car and it immediately connects; other times there's nothing there, the Media & Phone buttons do nothing, and if I try connecting from the phone, it can't connect.
It's not just with my phone. My husband has a Samsung Note & a friend has an iPhone 6. They can't connect either when I can't.
But I take it to Ford who re-calibrates it, and they say it's not the system.