The film does not differ essentially in the use of other films. Installation is easy and worked without Probleme.Jedoch the film differs by a real and significant reduction of glare and luminosity of the display at Dunkelheit.Bei minimal loss of brightness of the display is no big change the phone for example, as Navi in the dark better use .Everything is on display still clearly visible and the eyes are geschont.Bisher is at high use no change or deterioration in the action of the film erkennbar.Deshalb I like the film.