During installation, a lot of bubbles were created that wouldn't stick even though the screen was clean. After heating it with a heat gun, I managed to stick it without any gaps. After a month, it looks fine. Four stars for the poor installation; otherwise, someone who didn't know would have thrown it away..

Expensive but generally good screen protection.
No scratches from keys and surfaces so far.
The installation is easy as a frame and cleaning supplies are provided (wet/dry wipes and stickers for dust and lint).
From my personal point of view, one of the best protections I have placed on my phone.
EDIT: Unfortunately, after placing the phone in the same bag with keys, visible and noticeable scratches appeared on the bottom part of the screen protector. For the cost, borderline unacceptable. One star off. This does not affect the positive aspects of installation etc. mentioned.