Its just matter of time till Nokia powered maps with full voice based navigation and offline mapping comes to Windows Phone platform. But until then if you need some mapping solution that works without data connection, there are few apps available in Windows Phone Marketplace, Mapcache Offline Maps is one of them. It features,
- Caching of map data for offline use.
- Fast, clean responsive interface.
- Address and local business search.
- Location bookmarking.
- GPS location tracking.
MapCache Offline Maps costs $1.99 in the marketplace with free trial. Download it here.