I've got similar issues with XZ Premium and my car infotainment (Mazda MZD Connect present in recent Mazda cars). Before car's infotainment firmware update, I could not even finish phone pairing. After Mazda firmware upgrade (59.00.502) I can successfully pair phone, make phone calls and use media audio (car's audio controls do work). However song metadata is not displayed. It's working correctly with my Xperia Z3C, however this phone has AVRCP version 1.3 and XZ Premium has 1.6.
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