How the iPhone's Jiggling App Icons Work

This patent describes the 'jiggle mode' on iPhones, where app icons shake to show they can be moved or deleted.

What it covers

The patent defines a method for a touch-sensitive device to enter a reconfiguration mode. When a user performs a specific action, such as holding a finger on an icon, the device triggers an animation where multiple icons oscillate around a fixed center point. This 'jiggling' effect visually signals that the user can now rearrange or delete the icons. The patent also covers the logic for dragging an icon to a new location and automatically shifting other icons to make room for it.

What it doesn't cover

• —Does not cover icon movement that does not include an oscillation or 'jiggling' animation.
• —Does not cover non-touch interfaces, such as using a mouse or keyboard to move icons.
• —Does not cover reordering icons that do not utilize a touch-sensitive display.
• —Does not cover icon arrangements that do not allow for user-defined repositioning.

The clever bit

The innovation lies in using a specific, physics-based animation (the oscillation) as a visual affordance to communicate a change in the device's state, turning a functional task into an intuitive, tactile experience.

Why it matters

This feature became a fundamental part of the iOS user experience, establishing the standard for how users interact with and organize mobile applications. It was a key component of the interface design that helped differentiate the original iPhone from its competitors, which often relied on complex menus or stylus-based navigation.

Real-world examples

• 1.iOS home screen app rearrangement (jiggle mode)
• 2.iPadOS home screen icon management