because the HTC One has tiny concave increases at both edges is perfect installation only with 100% central position possible (otherwise an edge will not invest and there is a wedge-shaped "bubble") - when the positioning has succeeded rewarded a perfect result the of the Original surface can hardly be distinguished. Even the super tip exempt individual dust grains with tape !! Seller is 1a / 5 * - 2 films I have for the above positioning problem "consumed" - problem-free replacement for description of the problem by e-mail.