They are simple and bubble-free installation. In addition, enter the phone a nice matte surface on which one sees no fingerprints. In addition, the films are very durable. My I have mostly only after 9-12 months so usually changed.
Only the supplied dusters are a little absurd and conjure more even dust grains than to remove them on the surface. I can moist lens cloths highly recommend for cleaning the phone. So you get a dust-free surface towards perfect and has a bubble-free pleasure.
It would be good also if there would be a tougher card or accompany similar. I always use my debit card, but an extra in the films, would be very helpful. I have with my debit card always afraid that I may break them: D
To summarize: Highly recommended and better than any expensive type of fire!