Mitch, thanks for your quick reply. It is fixed (for now), After searching the Apple user groups, someone had a similar problem. The suggestion was to re-name the iPhone, especially if it was upgraded from a previous model (mine was). After changing the iPhone name, the RRC sees it now. Possibly something becomes corrupt in the upgrade but I don't see why that only affects some Internet appliances and not all. Hopefully, it's a permanent fix! Time will tell. Right now, Sprint LTE service is like being on the LAN.
Paul, W9AC