iPhone users can now use turn-by-turn navigation application. Full navigation software and maps are installed on the phone, so there is no need for massive data traffic and expensive data tariffs. Application is available at the App Stores in Europe and North America, but soon it will be available for other markets. We didn’t have opportunity to test it but video preview is available at

http://www.navigon.com/site/int/en/products/navigation_software/iphone