The past two weeks I've been experiencing dropped calls while driving in areas that I normally never, ever do. Its been pretty frequent and its definitely not an RF issue with my phone. The areas I've been in have been far enough away from downtown that I didn't think would be effected by the DNC. Something going wrong with the tower hand-offs I think but not sure. Anyone in CO experience this too?
If you're phone has been RF tested, preferably twice on different days, then customer service or your local corporate store should file a network ticket for Field Ops to investigate.
If you are a direct Sprint employee, your manager or a coworker or employee accounts can submit an EHC ticket for you (type EHC in your web browser at work). It has to be submitted by someone else, though, as you're not allowed to make one for yourself.