I have concerns about this issue too. I use T-Mobile USA. On Symbian phones, the set-up wizard will typically give the incorrect APN for packet data. I am thus forced to go in and edit it manually. Additionally, I may wish to set up another pack data setting. Page 32 of the extended users' manual says that one can go into SETTINGS > INTERNET CONNECTIONS > CONNECTIONS and edit those settings always existing. It is crucial, I feel, to be able to add APNs on ones on.