I did not do the installation myself, so I cannot comment on the level of difficulty. It leaves a small gap on the right and left side of the screen, but it could be like that for all I know. It broke at the edge within 5 months

The placement is not difficult in front, steady hands are needed for the application which does not cover the entire surface.
The tempered glass is good for this.
The side part is more difficult to place.
It didn't fit well for me, but since it is for protection, it doesn't matter.
If it breaks, I will get another one

The installation was very easy and luckily I managed to do it successfully without any bubbles. After 2 months of use, everything was fine. Until recently, specifically two days ago, bubbles magically appeared, despite frequent cleaning and removing dust from the edges of the screen. I'm thinking of throwing it out of frustration and getting another one!!!! Also, it doesn't cover the entire external screen!!
Finally, regarding the protective membrane it provides for the area that opens and closes the phone, it's a good idea but unfortunately it was impossible to install and it is completely useless and unnecessary because I have the feeling that even if it was installed, it might create some problem!!

Good quality glass. Difficult to install, especially the centering. It doesn't cover from edge to edge, which bothers me a lot. Expensive for what it is.... I couldn't manage to install the Hinge Film that it includes for the fold's side.