With today's iOS 27.3 beta, Apple expanded Reachability to the iPhone Duo . Reachability lets ‌iPhone Duo‌ users shift the content on the left or right side of the outer screen to make it easier to reach with a thumb.

Reachability can be turned on or off by going to Settings > Accessibility > Touch > Reachability. It is on by default after updating to the new software.

When the ‌iPhone Duo‌ is closed, a short swipe left on the left edge or a short swipe right on the right edge will shift the outer display's content left or right.

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