After 5 attempts (with replacement) finally it

In my opinion, the films are a bit too tight. In each experiment, some was a side or edge of the sheet at the edge of the smartphone. Would ansich unproblematic smartphone would have no elevated edge thus can not be air still present completely remove (Galaxy S4 mini). When attempting to set the new film immediately attracted Staubkoernchen. Another attempt with this was thus sentenced to definite failure, because of course forms a not removable bubble here. 3 films are in the package, 3x zero success.
Maybe a bad day? (Meien mood was at least in the basement).
Addendum: Positive customer support. A new packet of 3 films get sent. At the 2nd attempt, it has finally worked out, is centered on and bubble free. Operating the display continues without problems, simply does not feel quite as "sliding" of the Above "wipe", but may be that it is still there (probably simply because it from the package is still fresh)