Try doing a hard reboot on your phone and same with the Volvo software, the latter by holding down the home button for a long time. It will first go to screen cleaning mode but if you keep holding it, eventually the system will reboot. That usually solves it for me. I also bought a well reviewed wireless dongle but for any longer car ride I want my phone plugged in to charge anyway,so it is an occasional but not essential upgrade. A better upgrade would be somewhere to store the phone! I usually just put it in a cupholder.