I'll let THINKER214 respond for themselves, but I'm in the same boat (I'm the OP of this thread), and I can report that other BT devices are working fine with my phone. Fitbit devices (at least the Flex) do not pair with BT; they somehow connect directly. Possibly this is the issue.
Verizon Wireless Customer Support wrote:
We absolutely want you to enjoy your Fitbit. Do other bluetooth devices have trouble connecting to your phone? Do you receive a specific message when you attempt to pair the two? JosephT_VZW
Follow us on Twitter @VZWSupport
If my response answered your question please click the 'Correct Answer' button under my response. This ensures others can benefit from our conversation. Thanks in advance for your help with this!