[Asphyx]

Well in response to the original poster (and guidance to anyone else having to get a replacement...)

Don't go back to sprint or replace your phone based on a software problem!

If all of the hardware works then simply flash a decent stock rom to see if the problem goes away!

NEVER trade in a software issue because you more likely to get a hardware issues in return when going through insurance as they are all refurbs!

Might I also suggest that you re-program your device using your carrier's procedures for enabling a phone on their systems? (for vzw that would be *228-1 and after reset *228-2.for sprint I believe it is a ## code)

If everything else works on the hardware then thank your lucky stars and keep the unit! Try fixing the software with a rom as your better off doing that even if the phone had no issues at all!