This is a wide-angle and macro lens to add to your photographic arsenal and it lets you shoot wide-angle and macro photos rather than simply adding a digital effect. Obviously, there's no 'mount' for your iPhone. Instead, a glued washer sticks to the back of the iPhone around the camera lens. The lenses are then held onto the washer by magnets. Make your pictures go from good to incredible with this lens for the iPhone 4.