Since upgrading to an iPhone XS Max, bluetooth audio automatically starts playing when I enter my vehicle. The issue is data consumption since it streams in the background even if the iPhone is not the audio source in the vehicle. Often is there is little to no indication it is streaming unless I look down at my Apple Watch (try not to look at the phone and swipe around too much while driving). Is there a setting I can change to stop the auto play. Recommendations I've found is to disable cellular data for Music, but I do stream Apple Music at the gym over cellular daily.
iPhone XS Max
iOS 12.1 and iOS 12.1.1
2017 Telsa Model X
iPhone XS Max
iOS 12.1 and iOS 12.1.1
2017 Telsa Model X