I have Renault Megane 3, 2010. Until recently I had no problems using bluetooth connection for making calls or listening music (Spotify to car audio through bluetooth) using Apple iPhone Xs. Recently I got myself dual sim for same phone (physical sim card – personal line, esim – business line). From now on, whenever I call or receive call to my personal/second line (esim) audio keeps droping after few seconds of call. As if the car would say ok, there is no call on primary line and put radio back on, although the call is still active on second line. Do you have any idea how to fix that?
Given your situation, the problem could be attributed to various reasons such as Bluetooth problems, iOS system glitches, etc. If you want to fix it once and for all, you are suggested to use any professional iOS system repair tools, which can definitely fix your issue while causing no data loss.