I have a BB 7230 from T-Mobile that I've had for about 2 and a half years, and am getting an unlocked Cingular 8700c in a couple of days. What do I have to do to make this thing work with T-Mobile? Just plug in the SIM from my 7230 and go? Do I have to make any changes to my account with T-Mobile?
Like the subject line says, I'm new to this whole thing, and want to make sure I don't mess up my new phone or take it in the shorts on my next bill.