Adjust the film to the nearest quarter of a millimeter is essential in order to remove bubbles. Otherwise, the edge of the film does not adhere to 100% on the surface of the screen. In this case, despite your efforts, a broad band of "bubble" can not be eliminated, because there is always some air that passes between the screen and the film. And I'm not talking about a rough adjustment, the problem exists in 1/4 of a millimeter or less. On the screen of 6.3 inches of Mega, it would take a laser aiming to achieve the desired result. Personally, I used the 3 films without achieving a clean fit. UnlikeFoliX the protective membrane film manufacturer has addressed this problem by providing films that do not cover 100% of the screen. This ensures a perfect adherence of the film on the surface of the screen, and therefore no band bubble edge. I bought this brand of films for my wife Note 2: Successful poses with a balanced adjustment and bubble, from the first attempt. I triedFoliX because I was interested in the anti-reflection film character. Finally, I regret and I will order again a product membrane, although not anti-reflective.