Radio interruption happens when my iPhone is plugged into to my 2019 Ascent with the iheart radio open, and while iheart radio is on, I would simply press radio on the dash to listen to local stations, and radio would just go mute. When I press the memory button, it comes back then goes off after a few seconds. I would change to other stations, and same thing happens. The dealer checked it out with no resolution. I recently learned that when my iPhone is unplugged from the car, the radio sound comes back with no interruption. When I plug it back on I would get an interruption. Am I suppose to unplug the phone from the car to listen to the radio?