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Business, in my experience, is so useless I now never use it but use a $40 app from the Google play store instead which betters Business nav in every way. It uses TomTom mapping, and has speed cameras and limits, vehicle speed, can be used as a HUD, free map updates 4 times per year, and, if you subscribe, TOMTOM based traffic alerts.
Business will play iPhone over Bluetooth in basic sort of way and will play every mp3 player I've tried over the aux socket. Its much more fussy over Bluetooth with android but works fine over USB, but control is via the mp3 player, not idrive
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