iOS 7 uses a parallax effect to create the perception of depth on your Home screen and elsewhere. When this feature is on, you may notice that your:
- Wallpaper, icons, and alerts shift slightly as you move your phone.
- When setting a wallpaper in Settings > Wallpapers & Brightness, the photo or image will be slightly zoomed and cannot be scaled to fit to the screen.
You can change this behavior by enabling Settings > General > Accessibility > Reduce Motion.
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