After a lot of head scratching and trying to understand why I have issues with connecting my Android Auto on my phone to my Mazda Connect over Bluetooth, I found that it has not been tested and could be incompatible as the OnePlus 6T is running a later Bluetooth stack with newer Bluetooth hardware. My Google Nexus 5X was tested and compatible.
I have hopes the next firmware will fix this but I intend to also test my phone against the built-in Android Auto in Mazda Connect before buying the upgrade.
http://infotainment.mazdahandsfree.com/phone-compatibility?language=en-AU&carrier_id=&manufacturer_id=&phone_id=&model_id=2353&carrier_id=127&manufacturer_id=205&phone_id=5121
I have hopes the next firmware will fix this but I intend to also test my phone against the built-in Android Auto in Mazda Connect before buying the upgrade.
http://infotainment.mazdahandsfree.com/phone-compatibility?language=en-AU&carrier_id=&manufacturer_id=&phone_id=&model_id=2353&carrier_id=127&manufacturer_id=205&phone_id=5121