Have all of the slides used by the last slide a reasonably useful result towards zubekommen. I have several smartphones and Tabelt's equipped with protective films, but at this I would have soon the crisis got ... 1 or 2 attempts Ok but 5 and 6 is also not 100%. When pressing on the fell on the vorgestnzten holes not properly fit to the phone. So the film sat always wrong and were either up or down air bubbles which also could not be eliminated with the spatula. At the 6th attempt I have the wrong film set so that the front camera lens is covered something (I use this rather rare).