[izuzu]

Seems like you've done everything right. The PRL update is what i did in order to fix my issue with the roaming triangle. If its a tower(s) problem than other users should have the same prob; check with someone you know on sprint if they have experienced anything similar.

Only other thing try a hard reset which sets everything back to factory default. It also erases all data you have saved on it so i would recommend you back it up first before doing a hard reset.

hard reset: power+vol down+circle (enter key) hold all then push stylus in soft reset