Challenging Google and Nokia -- along with dedicated turn-by-turn GPS navigators like Garmin and TomTom -- Bing just added voice-guided turn-by-turn navigation to its mobile app for Windows
Phones 6.1 and above. "Now when getting directions with Bing, you'll see a new 'Navigate' button," Microsoft says. "By selecting it, Bing will calculate your route, and guide you as you drive." Search
Engine Land's Greg Sterling want to know: "Will this feature come to the excellent Bing iPhone app?"
Sterling says, "Google has been holding back Navigation from the iPhone (my guess is to
try and differentiate Android handsets)." In his opinion, "A free voice-guided navigation app as part of the Bing iPhone client would probably be widely used by iPhone owners and probably motivate
Google quite quickly to bring out Navigation for the iPhone."