to be avoided + board anyway

for those who want to try anyway:
one must understand oneself the user manual
the actual film is sandwiched between two films
it gains a glue and the film on the screen that can be cleaned with a cloth supplied
bubbles are removed with a supplied applicator (single piece of cardboard)
we remove the second protective film

any invisible dust will create a bubble> 3mm in diameter
it is impossible to remove these bubbles with the applicator
raise the film to remove no use: they are glued to the film and meanwhile new dust
stick to the film or deposited on the screen
the cloth comes seemed given himself his own dust
After 1 hour of labor, zero result: fifteen blistering 2 / 3mm diameter