I made my Galaxy Note with a display cleaner thoroughly clean. Me a clean table, placed directly on the window, so I can see something. Then dab the remaining fluff with a piece of adhesive applied and the film. The air bubbles to the edge pushed back out. When there were still three fluff finally on the edge, I have the film at these points carefully lifted and fluff again blotted with a piece of adhesive. Workload 10-15min and it worked right away. It is almost not to see that a film is on the display. The function, which is the touch sensitivity is unchanged. The film fits perfectly and the punched holes for speakers, camera, sensor and button are exactly in the right place. The manual is very good and if you take some time, one gets a very good result. After bad experiences with similar films with my previous phones, I'm very pleasantly surprised.
I still have five films left and hold until the end of life of my smartphone. I recommend this product uneingeschrängt!