I have the same issue with mine. In fact, I am disappointed in uconnect. I had a ‘17 Ram and uconnect would send and receive text messages with my iPhone 7, it would also alert you to favorite songs. All this fancy stuff and we lose the basics.I dont know about the 12” or the u conect with the nav mine is the plain old u conect. Apple ios12 will allow car play to use google maps and waze. So that will be my nav. Im going to try some more tinkering with 2 phones.