Antonio Villas-Boas/Tech Insider
This glitch was first discovered by Reddit user vista980622, but we first saw this trick on 9to5Mac.
Without the glitch, there's still a way to limit the phone's animations through its settings (just turn on Reduce Motion in your iPhone's Accessibility settings), but that only makes a slight difference to your phone's speed. This glitch removes those animations entirely, which otherwise slow down the interactions between you and your iPhone.
Check out how to activate the glitch: