If you do not want to hear the voice navigation on your iPhone (or iPad), you can turn the voice off, or change the volume. There are still some reasons that voice navigation will not work on your iPhone. If you have tried several “fixes” and the voice navigation still does not work, you may have to contact your cell phone carrier or even Apple Support. Siri MUST be turned on for voice navigation to work. This video is shown using iOS 6, but it works the same in iOS 7. New video for iOS 7 coming soon!