MagSafe is a relatively new feature that ships with the iPhone 12 lineup, and it lets users connect wireless chargers and other accessories such as cases, wallets, and battery packs to their handset with the satisfying click that comes with magnetic attraction.
In many instances, connecting first-party and other licensed MagSafe accessories to a supported iPhone results in an aesthetically pleasing animation. Even Apple’s MagSafe wallets provides an animation of their own that’s distinguished from the one you see when connecting to a MagSafe charger.