My 21 hellcat charger (with the HK system) has had this problem from day one. Because I got the car in the fall, I didn't have much time to deal with it. Parked car for the winter. The U connect voice has static when she speaks. Navigation as well. Phone calls are perfectly clear. Zero static from speakers when listening to the radio. Had the car checked out in the spring. There is a TSB for static from dashboard speakers, not the problem. My Amp is updated. They decided to change the telematics module (part of the radio). After 5 weeks, the radio showed up, plugged in and no difference. Changed dashboard speakers, no difference. I'm curious if anyone else has had this problem and any remedies? Not a major issue, just an annoyance.