Thanks G32 turbo I have spent ages trying various solutions recommended on the internet. Cleared out all other cars, emptied memory and cache, even deleted AA and reinstalled it. Unfortunately none of it has worked. Once in a blue moon it connects perfectly wirelessly and doesn't drop out. Works fine with a usb cable, so I am reluctantly using this. When I collected the car from the dealer they tried to set it up for me, then got their IT expert to try. She eventually asked me if my phone did wireless charging and then told me that as it didn't I didn't have a wireless phone and needed to get a new phone. Don't think there's much point going to the dealer for further support.
Phone is a sony xperia 10 iv car is skoda karoq se drive 2023