What's the difference between gps enabled & built in gps in cell phones?

i'm planning to buy a blackberry that have gps features. i need something that doesn't require me to download maps, i mean it can receive signal straight from satellites like any other gps receiver.





i'm currently using nokia n95. the gps feature requires me to buy maps from nokia which i found a bit waste of money.





so, what's the difference? can you recommend me blackberry models with the gps feature %26amp; wi fi?|||gps enabled and built in gps got nothing to do with the maps.





Or rather phone has pre-installed maps if you purchase from major carrier in a particular region. i.e. singapore , most phone are pre-installed with the map (nokia series)





whether it is gps enabled or built in, it's referring to the same thing.


note, A-GPS is still GPS except their start up connection which are weaker and will require connection to assisted server (AS) via 3G/GPRS/Wifi.





those phone can still work alone without connecting to AS but you got to wait a pretty long time.





blackberry one will include Curve, Bold and Storm that have all the above feature of GPS and wifi