How to troubleshoot Bluetooth connectivity issues in an Audi A4?

Whenever I try to connect my phone to my Audi A4's Bluetooth, it just won't connect. What could be causing this issue and how can I fix it?

First, make sure that both your phone and the car's Bluetooth are turned on and in discoverable mode. If that doesn't work, try resetting the Bluetooth connection on both devices. If the problem persists, it could be a software issue and you may need to update your car's software.

Another possible solution is to delete all the previously paired devices on both your car and phone and try pairing again. This can sometimes solve connectivity issues.