I went through all kinds of apps trying to get my 2013 RAM Laramie Longhorn to connect and stay connected with my Note 2; the BT connection was terrible. During an oil change I asked the service department if there was any kind of ROM download that would fix the connectivity problem – and there was. Following the update, not only was the console software updated (and slick), but the Note 2 connected consistently. When I got my Note 4, I un-paired the “old” and paired the “new” and from day-one it has worked flawlessly.
One problem I stumbled upon along the way was that any other BT device pairing I had with my Note 2 (and with the device turned on – even buried deep in my backpack) would interfere with the truck pairing. Read this to mean any BT device that I had previously paired with my phone (ear buds, tablet, laptop…), when BT was enabled on that device (ear buds, tablet, laptop…), would clobber the connection.
The upgraded ROM download to my truck was much needed, but I believe I might have fixed the connectivity problem sooner had I even considered other BT devices of mine messing with the connection.
Long story – short – make sure ALL of your other BT devices have BT disabled before you try to connect with your vehicle.