Since my wife and I switched to A20, the phone would drop bluetooth connection every minute or two.
The disconnection would stop Android Auto working which is a disaster when I am driving on Waze.
And it seems that A20 is not the only model affected, or just Samsung, the cause seems to be Android Pie.
The good news is Google may already have fixed it (according to the article), the bad news is Samsung might be very slow applying the patch to their update.
So if anyone from Samsung is reading this community, can you tell me when I can get this thing fixed?