I am a techie by trade, but even I was a little intimidated by the proposed installation process. I read the instructions.... something I don't normally do..... and watched the videos etc. During the installation, as the fluid was dispersing across the screen, I noticed that a very small air pocket had been trapped near the ear piece. The instruction said not to touch the protector and if there were air pockets, then the screen could be removed, cleaned and the kit included a 2nd vile of fluid to use for a 2nd attempt if needed. I also noticed that the hole for the camera was not exactly lined up correctly. Since I had nothing to lose, rather than going straight to taking the screen off, I just tried to gently squiggy the bubble to the edge with my fingernail while also moving the protector the 1mm or so to correctly line up the camera hole. The protector was very easy to move as it was essentially floating on liquid, and so I was very easily able to align the camera hole correctly. The air bubble got smaller, but I couldn't get it right to the edge without perhaps more pressure than I was willing to apply....however, it was very small now, so far to the top of the screen as to be higher than the camera and not at all in the normal field of view, that I decided it was acceptable and not worth the risk of removing, re-cleaning perfectly and retrying for the sake of it.... so I proceeded to the curing process.
After full curing and on closer inspection, I do see what I could only describe as 'stress lines' in the adhesive at the very top of protector, obviously due to my squigging attempts earlier, but again barely noticeable and then only if you were looking for issues.
All in all, the protector was flawless and the final picture and feel are near perfect. If I was doing it again, the only thing I would say to look out for, is the camera alignment... perhaps the fixture could be tilted or something to align correctly, rather than touching the screen as I did. I think the air bubble was just unfortunate in my case and I wouldn't expect a repeat if I was to try again.... but as I said, the bubble was so small and out of the way that I was perfectly fine with it.
I mentioned at the beginning, that the Finger Print Scanner worked about 75%.... and this was after I increased the sensitivity and retrained my finger prints. The FPS does work 100% better than it did with pretty much any other (cheaper) protector I've tried, but I do find that I sometimes need to be a little patient with it and have to try 4, 5 or maybe 8 times for it to work (sometimes it'll work first time!).... maybe it's my finger prints?? :)
Anyway, generally very happy. Very happy to recommend and I would happily use again for my current or next phone.... 4.5/5, losing 0.5 for price and non-perfect fit requiring manual adjustment for camera alignment.