Originally Posted by troydbrown
Just go to the store have them issue the new SIM card and you should be good to go. You won't have to d anything else.
Yep, that. I had to get a new SIM card for my 8310 as my old one was at least 5 years old. They transferred all my contacts onto the new SIM card at my AT&T store and gave me the old SIM back for a spare just in case.