For iOS: Tap Settings > General > Accessibility, then flip the "Invert Colors" switch.
6. Lose the "motion" effects (iOS)
The sleeker, flatter look of iOS owes much of its pizazz to something called a "parallax" effect: a clever combination of motion-controlled visuals that gives iPhone and iPad displays the illusion of depth. And let's not forget the home-screen icons that rapidly zoom in and out as you open folders and launch apps.
Pretty neat, but for some, iOS's new, eye-popping screen effects are a bit too dizzying.
Luckily, you can regain your equilibrium by turning "motion effects" off.
Tap Settings > General > Accessibility > Reduce Motion, then flip the switch.
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