Nokia maps updating phone information
Upgrading to the latest version of Nokia Maps gives you A-GPS (which uses the signal from the cell tower to speed up locating satellites), a slightly streamlined interface and one significant downgrade.
You have to pay a month (or 2 a year) for turn-by-turn voice navigation, with rerouting if you make a wrong turn, in both versions.
Confusingly Nokia Maps is also called Smart2Go, after the company that originally wrote it.
If you want to search beyond the maps you already have, you have to turn on network access (and specifically pick whether you want to use 3G or Wi-Fi and sometimes even which access point).
But after that initial spin, you can simply look down at your phone to see what is around you.