When I traded in my 2019 3500 HO to a 2020 1500, I did not want the 12" radio. Even though I liked the truck functions controlled on the screen, the NAV was worthless. You'll be better using google maps, the truck NAV doesn't work when using Google or Apple maps. I wanted to use both on a 5K mile round trip with the 12" NAV to track major cities and distances, as soon as I used my Apple play NAV, it quit. Of coarse I never learned all of that 12" radio, its to complicated. My advise is to study up on that radio, and use it often to get better with it. I learned the hard way having an early 12" radio, not alot info on it at the time. An example: I wanted to set my trailer brake controller to my heavy 5th Wheel, and I couldn't figure it out, it turned out the user manual for the truck, not the radio, did not mention if you had the 12" radio, your trailer brake controller is adjusted through the 12" radio. I had to blog on Cummins Forum to find that out, the owners manual had no mention of it.