Basically, I am very satisfied with the screen protectors, as it very well fulfilled its main task. I can not understand where the glass due to the "distributed over the entire surface bonding area" can not be placed without bubbles at least the problems some reviewers when attaching. This is not an adhesive surface, but the glass "stuck" due to adhesive forces. But make the display glass of the camera was perfectly cleaned, "flows" deflated when applying as a liquid. It was me because of this property not possible to bring air bubbles in between, even if I would want to provoke.
But what was not so easy, is the precise adjustment of the glass so that it is accurately placed in the center. It took me 3 attempts. It is helpful to switch on the display, so you can see if you possibly covered on one side viewing area. But if you have it set up exactly, the display is visible at 100%.
Note: Due to the above Adhäsion- place adhesive surface, provides the removal and re-deploying the glass is no problem You have to just watch, while the glass not to contaminate again.. I never had in all three experiments air pockets between them, and I am now sure that the glass can not accidentally fall off, because it already takes some well-measured strength to solve the glass!
The glass for the second display behaves basically the same, except that this is a bit too small. While it does not cover any visible surface (must then be precisely aligned on the Zentelmillimeter), but it leaves a 2-3 millimeter wide gap to the lower glass in total. There will certainly regularly accumulate difficult to remove dirt, but the functionality is not affected. I have also considered the second glass omit because it is not a priority for me. But as long as you do not mind, it's better than nothing.
In the package, a cleaning cloth for cleaning is included. That worked for me does not work well and only lubricated. I then cleaned again with a simple lens cloth from the drug store, the display, which has perfectly cleaned. Either my cloth in the package already outdated, so the cleaning effect has subsided, or they generally clean not very good - the display itself was hardly stained (only finger / skin impressions).
The instructions are limited to a leaflet in English and Chinese or Japanese (which I do not even know) and 4 small pictograms. The text does not exceed thereby the information content, the offers anyway a common sense. Served its purpose, but has no value!