The iOS 6 version of Maps is more useful than its predecessor in terms of offline navigation, AppleInsider observes. Because the new app uses vector data instead of bitmaps, it consumes roughly 80 percent less space, and a greater area appears to be stored in memory when in Airplane Mode or outside of cellular or Wi-Fi service. iOS 5 Maps, based on Google content, would typically only save map tiles within a 10-mile radius at a couple of zoom levels.
