Review on 📱 UltraGlass Tempered Glass Screen Protector for iPhone 13 PRO MAX [Eye-Closed Application] - 3X Reinforced Anti-Shatter, Upgraded Anti-Scratch Coverage (6.7 inch) | 2021 Edition by Matthew Rodenbaugh

Compared to the previous brand of protective glass, it could not be protected from bubbles. The applicator aligns the protective film well on the screen, but air bubbles remain and cannot be eliminated, maybe I did something wrong. This came with only one screen protector so I didn't have a second spare. I used a replacement screen protector left over from my iPhone 12 Pro Max and everything went smooth and bubble-free on the first try. Which tells me it's the safety glass material that affects how you get the bubbles.