from what i understand... there is no good cingular phone, at least that they offer.
my girl's moto would randomly change setting, delete contact and do weird stuff. her mothers kid the same.
her nokia's external screen is cracked and it is half as old as my phone which has been beat to all hell. the volume controls also are now non-functional.
a friend of mine had one of their phones aswell, again total crap.
i have this gut feeling that phones just don't like cingular, it's as if the network is arsenic to those phones.