A windowed desktop workspace on both Duo displays, with a half-folded layout to come
Does PXS External Screen Desktop work on iPhone Duo?
Yes, and seen in a simulator video: PXS runs closed and open, and an upright desktop-and-touchpad layout comes in the next update. The App Store notes don't mention the Duo.
- Simulator verifiedThe developer, in a 51-second video of the app in the iPhone Duo simulator posted on October 15, 2026, and on Reddit: PXS runs on both displays, and the upright desktop-and-touchpad layout is coming in the next update. App Store version 1.3 (released October 23, 2026) doesn't mention the Duo. The video's caption says it is the real app running in the Duo simulator.
Adapted for the fold
- Closed · Outer display
Desktop on the cover
Closed, PXS runs on the cover itself, with no external monitor needed.
- Open · Inner display
Windows on the open display
Open, the Duo shows a desktop with movable windows, a dock and files. The windows hold PXS's own tools and web apps, not other iOS apps.
About PXS External Screen Desktop
PXS is a desktop-style workspace with a browser, files and built-in tools, for an external display or the phone’s own screen. The developer says it runs on both Duo displays in the simulator, and that an upright desktop-and-touchpad layout is coming in the next update.
The App Store version, 1.3 (released October 23, 2026), needs iOS 18 or later, and its release notes don’t mention the Duo yet.
Evidence reviews
What we checked, when, and what the evidence establishes. Each record preserves the support label at that check.
· Simulator recording reviewed
Simulator verified · iphone-duo
Looked at the frames of byteNine's 51-second video, whose caption says it is the real app running in the Duo Simulator, in the simulator's device frame: Folded, the app on the cover itself; Unfolded, a desktop with a dock, movable windows and the Files app on the open display; and Upright, the desktop on top and a touchpad with keyboard and window buttons below, labelled coming in the next update.
Poses shown: Closed, Open. These are observations of the evidence, not a test of every interaction.
App version: Not recorded in this evidence. Environment: iPhone Duo simulator.
An edited promotional video with title slides, not a raw capture. The upright layout is labelled coming in the next update, and no app or Xcode version is shown. No build was tested.
View reviewed evidence ↗· Developer statement reviewed
Developer claimed · iphone-duo
Read byteNine's Duo video page and announcement, which describe a desktop workspace on the cover and the open display, with the upright desktop-and-touchpad layout planned for the next update.
App version: Not recorded in this evidence.
The video stayed at 0:00, so no frames were seen and nothing is verified on screen. App Store version 1.2 has no Duo notes and wasn't matched to the announced build. No app or device was tested.
View reviewed evidence ↗
Watch it unfold
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Every iPhone app opens on iPhone Duo, but only updated ones fill the inner display. What an app looks like before its developer adapts it, how to tell which are ready, and which popular apps have said so.
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Sources: byteNine's iPhone Duo simulator announcement (youtube.com) · PXS Desktop by byteNine (bytenine.com) · PXS External Screen Desktop on the App Store (apps.apple.com) · byteNine on Reddit: PXS Desktop on iPhone Duo (reddit.com)
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