Before the last two updates my calls over bluetooth were fine, after 26 and 30, I can not here anything via bluetooth. My wife had the same issue. Phone key unlock only works about 50% of the time, you either have to wake phone up or do the bluetooth off/on dance.
I have deleted my phone from the car, re-added.
I can play music from my phone, see the contacts, see all text messages
My phone key only works half the time, if that (that is getting old quick)
Making calls from screen will start the call, but you can't hear them nor can they here you.
Thoughts? Love my M3 2020 but these little issues is getting old, real quick.