Tempered glass just doesn't protect the screen. It's a hoax.
They are easier to break than the screen.
Suppose you had an Iphone with a tempered glass screen protector installed.
Accidentally you dropped it while pulling it out of pocket. You pick it up. See the protector is broken. You remove the protector to doscover your screen was saved.
Toy think to yourself, "Wow! This tempered glass protector really saved my screen! It's a must-have!"!
The real trick is, the tempered glass are very wear and break on the slightest impact. They break too soon creating an image that they sacrificed themselves to save your phone's screen.
I'm pretty sure your screen would've survived that hit. But just because you had a tempered glass screen protector installed on your device, it looked like the "hero" here. Don't let them fool you!
Think before you invest in a product. They established a market by fooling people. Replaced the way more safe ,SCREENGUARDS.