The films are used to high quality and perfect fit. However, a reasonable preparation is the alpha and omega I myself previously read how to do it perfectly, in implementing it has even a smidgen gehapert: Because I do it in the bathroom after a shower trying since the steam presses the dust particles in the air to the ground. I have not showered for long enough, the room was not satisfied enough steam, the windows were not half shod. So take a shower longer next time ... ;-) Nevertheless, it went relatively well. The film has its projection for releasing the Abtrennfolie on page of the Home button, which you start with just this, hang the film. This in combination with the corners of the display allow a straight mounting the film, then steadily and not too quickly pull the carrier foil and let hang the protective film, it runs it perfectly clean. Since I have played around with the first placing too much, dust particles were ruckzuck under the film. This I then removed by manual with two pieces of scotch, a lift to the film, the second to dab the dust grains. This is very good, just can simultaneously again new particles including reach. I have here a little rumgeschustert, but the result is absolutely presentable. There is not a single bubble exists. From the surface finish it is something better grip than the display itself, ie the finger slips with slightly more resistance, which I would not interpret as negative. The now almost two years old Mumbi film on my old iPad is smooth, perhaps rubbed. ;-) This is, incidentally, still immaculate, I see these films therefore actually a one-time investment for my equipment. Like that time I have only one sheet needed to assemble. The other two I'll cede to acquaintances because I do not need more experience shows. But you should approach the preparation for applying to recklessly, would have two more attempts.