Of the three films in the packet I have two missed, because again and again was dust under it and finally hung on the foile below. (That's the corner.) In the third film I'm then how it is in the instructions, really went into the bathroom and - important! - Have the film slowly brought from the mounting film onto the display, while all the time the air pressed out sideways. The film would now fit perfectly if it had a little more tolerance for the display. Since it is but quite accurately cut on its internal dimension, causing the slightest imbalance in the beginning (guess Since Antirefelx-effect is good, I'll probably again order a packet, in the hope that the blank then something gracious fails. fumbling it all.