[P90wn3r]

If you're unfortunate like me and do not have but sprint 1x service, just enable roaming and you'll be up to speed. From what I deduce, this roams voice too. I needed both and it works.

This isn't anywhere on the web, so you're seeing it from me first. It's about as simple as it comes too...

Edit the registry as follows
Under HKLM\Software\OEM\InitProv\PhoneSetting
Change ItemCount from 2 to 3
Save
Soft Reset

On reboot, start > settings > phone > services > roaming > select the new option that is revealed "Automatic-B"

This is the cloaked "Roam Only" feature that is causing issues. Do not rename anything, it is not needed and may cause issues.
This may work on other PPC sprint phones too, so don't be afraid to try it.

ENJOY!