mborchert, Sep 13, 2018 : I am having the same issue. Since update to 5.1.3 my phone calls do not sync to my car deck Alpine. Music streams fine. I go to the options and there is a check box for phone but it will not allow me to select it / check it off. I have tried deleting the Bluetooth settings on the phone and car, clearing cache on Bluetooth and in recovery and nothing works. Please fix this support.