A holder for a handheld device, such as a cellular telephone, is a mount clip that attaches to a motor vehicle door. The first arm of the mount clip terminates with a hook or curve or bent edge. When inserted into the window slot of a motor vehicle door between the windowpane and the door panel, the hook or bent edge of the first arm engages with a portion of the window gasket. A mount fixture with a cradle or tray to hold the handheld device extends from the mount clip. When the holder is installed onto the driver's side door, the handheld device is positioned proximate or adjacent to the steering wheel and does not block the driver's access to the dashboard or the driver's view through the windshield.