In the first delivery, the films were punched unfortunately not clean and therefore the film was on the edge not clean up on the display. The delivery took for Amazon ratios long, about 1 week. However, the service of Rydges was 1a. Had my problem photographed and got prompt replacement, even 2 supplies. The second delivery was due probably to the fact that at Rydges probably even none had more faith in the first delivery, since the delivery given notice had expired. 4 stars is because I've already bought screen protectors, which were easier to use - for example, glue tabs on the top that can be removed applying only after, to avoid that fat comes from the fingers to the slide base when mounting. Otherwise applies as for any screen protector before applying: display good clean, as the room in which this occurs, the best produce in the room a high humidity to minimize dust (eg in the bathroom and run previously shower let)