With old version (iOS 9.3.1 and before), I can connect to my car's bluetooth and ONLY Apple Music audio will be streamed to the car speaker. Voice navigation is send through my phone's speaker. As a matter of fact, Waze have an option to send voice navigation to bluetooth or phone's speaker. But after installing 9.3.2, ALL sound is now streamed to the car's bluetooth speaker. Voice navigation, text messages, music, etc. Anyway to change this back?