I guarantee this will blow your mind

If you’re using an iPhone (or iPad with a camera) and you’re not scared of messing with your phone’s settings (don’t worry, this is completely reversible, and no backup is required), try this out:

• Go to Settings, then Accessibility.
• Turn on VoiceOver.
• Tap the Home button.
• Launch the Camera app and point the camera at a nearby face.

And, If you get stuck in VoiceOver mode:

• Three fingers to scroll
• Double-tap instead of single-tap to select anything