Everything essential was said in other reviews. General guidance was that punched opening (no idea what) I've placed at random on the top and it has obviously worked. In this punching dirt is unfortunately catching! I had the display previously cleaned with a lint-free display spray. Upon application of the film you have to (as often mentioned) to watch, because the film is a perfect fit. For me it was, but from largely smoothly. Although I had the edge some air bubbles, which I could easily push but with a map to the outside and completely remove. Overall, highly recommended!
