I dropped my S21 FE for the first time today and have a small 5 millimetre by 2 millimetre crack on the edge of the protector. Just wondering if it's normal for tempered glass to crack from about a 3 and a half foot drop? It dropped onto a pavement. I'm just surprised it cracked at all because I thought the rubber lip of the case would prevent the screen making contact. Unless there was a loose stone or something sticking up that hit the protector, but I didn't notice anything on the ground like that. I bought the protector from a local shop for £10 and am happy to go back and get him to replace it with another, but just wondering if I bought a cheap so called tempered glass that's perhaps not much good, or if you think by looking at the box that it's fine?
This was the box of the screen protector I bought and below are two photos of the crack.
This was the box of the screen protector I bought and below are two photos of the crack.

