We recently replaced an iPhone with an updated version. According to the Verizon plan overview, it is "not registered" and currently does not have access to the full service. Our other three (3) phones all appear registered. There doesn't appear to be any loss of funtionality on the line. When I mentioned this during the the new phone acquisition process, the Verizon rep dismissed this question and we never got it resolved. How do I proceed? How do we register it?