To activate, the phone will make the call to Verizon automatically, just press 1 during the announcement. If you ever had to manually call for programming/activation, dial *228, then press 1.
*228, option 2 will update your roaming capabilities and update your PRL (preferred roaming list) to the latest one. FYI, this is done automatically in the option 1 programming. Verizon advises you do a *228, option 2 every 60 t 90 days, as cell towers may have gone up or down in your area, to keep your PRL up to date.