It was previously said that you should raise such a film in a dust-free environment. So if you have cleaned the screen perfectly, its commitment, the film on top of the phone to where grooves are cut for sensors and front camera. The film then slowly press down with a credit card or similar and remove carrier foil evenly. If one considers this one gets a perfect score. Finally, a super trick I've picked up. Sometimes it annoys you when the film is fully seated but a speck of dust is trapped. The Solution. Remove dust grains in advance with an adhesive strip. Works terrific. The films are good from the quality. However, they are difficult to apply as films that have two carrier films. For people with a little experience thoroughly recommended.