Put one of these on as soon as I unboxed my HTC One. Had to lift a couple of times to remove a dust particle but did actually manage to get a perfect adhesion. Whilst I haven't seen the screen without this protector, it appears duller. Not long after using, I noticed scuffs to the bottom corner which I think is due to the phone rubbing on something in my cycling jacket. So I need to replace it and you might say it's done its job, but also I doubt the screen itself would have been damaged in the same circumstances.