For this reason, this film is (like most other manufacturers also) so tailored that it does not go to the edge, but only covers the screen area and the buttons below it. So far, so logical.
What now but the devaluation of the film leads here, is the complete absence of any assembly aids. Since the film does not go on all sides to the edge, there is no fixed points for precise positioning. Moreover, that has gotten a little too narrow at the sides of the film, because in width, it covers just the touchscreen. So as soon as you touched down just a minimal wrong, immediately flashes the screen by the side. That just looks very ugly.
The solution would be to make the film in the double cut. Thus one obtains a film which is outside as big as the entire disk and inside another laser cutting has the size of the final film. The whole is held together by a carrier film. Now one sets the film to block, can be guided by the outer edges of the display glass and then can deduct carrier foil and outside the protective film. What remains is the real protector.
The manufacturer of protective films should become simply more thought to how their customers can easily afford the films even in difficult mobile phones. In such exceptional circumstances, most buyers will also understand that the film is then maybe one or two euros more expensive.
Unfortunately also lacks a tab with which one can hold the slide in the assembly.