I installed this glass protection: no installation problem. (Small trap the last step: to remove the protection of the glass glue, pull on the white tab and not try to take off the glass from the corner). Perfect result without bubble. More ... j installs gently the iPhone 6 and the glass in a shell adapted and there is the drama: tempered glass several times crack !!! Tempered glass that do not withstand the pressure of a shell: spot the mistake !! It is therefore absolutely a very flexible and having 1mm shell game to compensate for the thickness of the tempered glass.