Screen protectors are as simple as they are, just peel and stick, right? Well, after following the instructions for the first time, you should use a "dust remover" after wiping the screen. It leaves a large ball of sticky glue behind. I had to use chemicals to remove the adhesive to get it off the screen. When I followed the instructions I almost screwed up my switch. Then I tried to attach the screen as neatly as possible and it just didn't stick. Despite all adhesion, it slips off immediately. Then I tried another one and brushed it for a good hour or so to make sure it all wiped clean. I put it on and a tiny microfiber got into the sticker and made a huge bubble. It cannot be used now. Don't waste your time and money on this. Tempered glass should be sold by a company that knows how gluing and cleaning work.