My Motorola V3xx has been flakey. It has been dropping about 3 phone calls per day. Plus, the external LCD display has decided it should remain lit indefinitely (sporadically!). These problems were not recreatable (I’m a scientist, what can I say?). I also could not get the exact same conditions to generate the same problems on my wife’s phone.
I took the phone to the local AT&T store and they pointed me to their warranty repair service. Last night at 8:50, I rushed in and they guaranteed to help. (+1 point to AT&T.) They replaced my phone entirely, swawpped out my microSD card, imported contacts, and paired my blue-tooth headset to my phone. I hope it doesn’t have the same problems.