AT&T Navigator available now in the App Store
Voice guided navigation has been missing from the Apple iPhone since the first device rolled out in 2006. With the 3.0 OS update we now have the capability for this and TeleNav and AT&T were one of the first to provide this service. TeleNav has mobile clients on a number of carriers and devices and their iPhone client is quite full featured with the ability to send destinations to your account from the Internet. Traffic updates and up-to-date maps are provided via the wireless data networks.