For users who rely on the Apple Maps app for in-car navigation, Apple snuck a handy feature into iOS 7.1. While getting voice navigation prompts has never been a problem if you’re already listening to music from your iPhone, users who prefer to listen to the radio or some other audio source normally had a problem hearing audio prompts through their in-car system. If you’re running iOS 7.1 or later, however, and have a supported in-car…
