The membranes are slightly smaller than the screen, but I find it normal because the edges of the screen Note 4 are thinned and therefore more poorly plaquerait membranes.
I have attached some pictures because I think I managed to ask the well-centered on the screen membrane (fluke!)
Here's how I did it:
-cleaning with paper towels and glass cleaner
-cleaning with cloth, tags (circular motion then "scan")
-Withdrawal protection "1" of the membrane
-Laying and maintaining the membrane at the bottom of the screen
-lâché membrane which arises alone
-Withdrawal bubbles with the squeegee card
-Withdrawal the film "2" maintaining the membrane or it comes off