So I got the iphone 8 and will use it till I get the iphone X, (the wife will get the iphone 8 then). Last night i tried it with my old iphone 7 case that has the plate in it for the magnet mount in my car. It would not charge, it showed charging at first and then dropped off with in 1 min. does anyone know if there is a way to use a case with a magnet mount and still use the wireless charging ?