iPhone X poor call sound with bluetooth in car
I have bluetooth handsfree built in to my car (Audi A6) which was worked perfectly with both iPhone 5 and iPhone 6, the call sound quality was excellent. I got the iPhone X yesterday and the sound on phone calls is awful, really crackly with lots of interference. Can barely hear the caller on maximum car volume.
The car is still fine if I try the old phones.
This seems to have been an issue for a while now. Any solutions?
iPhone X, iOS 12