I spent forty minutes sawing at a phone screen protector with a kitchen knife, a box cutter, and my own teeth before my roommate asked why I didn't just peel the corner tab that was literally sticking out the whole time. Turns out the plastic wasn't designed to be murdered—it was designed to be ignored by people with functional eyeballs. I'm now the guy who nearly stabbed himself over a tab the size of a Post-it note.