Can I use any unlocked phone with Cingular?
I was thinking of buying a new phone, but not necessarily any
one that Cingular sells.
If I do that, and it uses the same spectrum Cingular's network
uses in my area, is there any problem just taking the SIMM from
my current phone and transferring it?
Or, if I get a phone they DO sell, but buy it unlocked from
someone else, will that work just as one I bought from Cingular?