Well, most Singaporeans are pretty crippled recently due to a law suit between Singapore Land Authority and Virtual Maps, thus the mapping service from www.streetdirectory.com is not available currently.
So when I was at Auckland for a firewall deployment, the customer was showing his Blackberry with an mapping application, Mgmaps or Mobile Gmaps. He’s using it with a built-in GPS and the best part is, the maps are stored in his memory card. Offline browsing !