A difficult poses

The protective plastic film is difficult to make without creating air bubbles
Several reasons:
- Dust can easily stick to the screen during installation and inevitably create a bubble. Cleaning imperative.
- The adjustment to the millimeter close is not easy to find.
- Different screen openings are precut on the film but still in place so that this will greatly gene insertion. With a needle, I came out to me all the same.
In short, all this has been very laborious and I toasted three films bought on 6 .....
As for longevity, I can not say anything .... of course it n''est cheap.