music sound jumps to phone call sound when connected to carplay
So for the past year I have had issues whereby my iphone12 will connect to CarPlay wirelessly and via USB, 1-2 minutes later the music audio will switch to the cars 'telephone sound' (so the settings for calls through your car, so very low and low quality). After 1-2 minutes of this it then jumps back to usual music sound. I've only got this through my phone across my BMW 1 Series, my wifes Nissan and then more recently, my new Audi A3. All of which work perfectly fine when using my wife's iPhone 11 Pro... I've reset the phone to factory settings the lot and nothing appears to be solving the problem, even more so lately it is now getting worse! The sound will randomly jump to the 'telephone sound' mid-song even after its done so at the start of the journey. Now when it happens within my wifes Nissan it changes to 'Smartphone' - my phone is and has never been connected to the cars built-in bluetooth. When it does it within my Audi it changes to the same volume settings on the dashboard as it does for when you use SIRI (voice command sound)...
Anyone got any ideas? Not even 2 years old and not had this trouble on my previous iPhone XR when using within the BMW...
iPhone 12