The iPhone Duo guides

iPhone Duo guides.

Read Apple's launch details, check what app support means, or start preparing an existing iOS app.

Apple's September 9 announcement covers US pricing, October availability, Split View and app support. Check what is confirmed and what comes later.

Review resizing, saved work, keyboard behavior and accessibility in one app journey. Record the test environment and remaining device checks.

See how we distinguish an app announcement, a research candidate, a simulator check and a physical-device test.

Find the Apple documentation for preparing an iOS app for iPhone Duo. Check adaptive layouts now and keep upcoming device tools separate.

What Apple announced about two apps side by side, saved app pairs and Safari windows on iPhone Duo, with questions to check before relying on them.

Apple has announced support for Apple Pencil USB-C later this year. Check the model, timing and app support before buying for iPhone Duo.