I have the Iphone 12 pro max. I just went out to the car to test it in all positions. With case on it charges in the vertical position on the left side of the pad, and also in the horizontal position, spacer installed. It also charges in the right side vertical position, but only with the case off. Since my wife charges her older iPhone with the cord, the V4 meets our needs. Obviously I can't speak for other types of phones - but that's what this forum is for. Just want to make sure that the good , as well as the bad, gets aired on the V4. Cheers.