At this price (1E) and for what it is intended for, it is excellent for my second mobile phone. The previous screen protector of a different brand that I had bought from a store and had it installed, fell from a small height and caused a small (negligible for some) crack slightly on the bottom right corner. I have had it for months and it still did not get any air bubbles, nor did it affect the colors and clarity of the screen. However, because I got tired of it and wanted to change the phone case as well, I changed it myself (it was easily applied without any bubbles, just clean the screen well and place it straight on top, then press towards the edges) and now the phone looks brand new.
*Note: No matter which screen protector you put on your phone, the thickness of the phone case is also important, especially regarding the back camera, so that it does not protrude, as well as how much it protrudes above the screen and the corners of the phone, in order to absorb the impact in the case and on the screen protector, rather than on the screen and the protrusion of the back camera on the back of the phone.