Granted, it's actually difficult to stick the foil without creating bubbles. This time I needed three attempts. When my predecessor had equal worked the first time. But I think that it comes with films from other manufacturers is not synonymous easier. Now she sits perfectly on my screen without any air bubbles.
Supplement: I have the same film now for half a year on my phone and there are no problems with it. I carry the phone often in your pocket and nothing is yet scratched. The view of the display is disturbed in any way.