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iOS 27.3 Developer Beta Adds Horizontal Reachability for iPhone Duo

The feature shifts large Duo screens sideways with edge swipes so controls are easier to reach and signals more Duo-focused software fixes are coming.

Overview

  • Apple released the iOS 27.3 developer beta on Tuesday, November 3, which adds a Duo-specific Reachability mode to address one-handed use complaints.
  • The Duo Reachability moves content left or right instead of down, using a short swipe from the left or right edge to bring distant controls within thumb reach.
  • Users can enable the feature in Settings → Accessibility → Reachability and then trigger it with a short edge swipe when the Duo is closed.
  • iOS 27.3 is currently in the developer beta channel with a public beta expected in the coming days and a likely full release around mid-December, and outlets advise waiting if you worry about beta bugs.
  • The update is part of a broader effort to adapt apps and the interface to the Duo’s foldable, two-pane display and should make everyday one-handed tasks easier for owners.