the films are relatively simple to install. Even if one can easily start missing (still school and leaves no trace). But be careful dust that sticks above and causes small air bubble formation. Protection for the front and back of the phone with microphone and camera pierces / pictures. Hole slightly offbeat but nothing too severe does not affect the operation of the unit. The matt is very convenient for outdoor use because prevents glare from the sun. Causes a slight difference in touch but you get used very quickly and in the end it impossible to have a grip when we wet fingers. Essential to maintain its smartphone like new.