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Do I need iPhone Duo App Store screenshots?

Short answer

Not yet. Apple lists iPhone Duo screenshot sizes — 1398 × 2034 pixels for the outer display and 2007 × 2853 for the inner — sets no requirement for them, and says uploading them in App Store Connect will be available later this year.

No, not yet. Apple’s screenshot specifications list iPhone Duo as its own device, but set no requirement for it, unlike the iPhone sizes that are required. Apple notes that support for uploading iPhone Duo assets in App Store Connect will be available later this year, so for now you cannot provide them even if you want to. The required iPhone screenshots are unchanged: a 6.9-inch set, or a 6.5-inch set if you do not provide 6.9-inch screenshots.

The sizes Apple lists

Display Portrait Landscape
Outer display 1398 × 2034 pixels 2034 × 1398 pixels
Inner display 2007 × 2853 pixels 2853 × 2007 pixels

The outer size matches the outer panel’s resolution. The inner size does not: Apple’s specifications page lists the inner panel at 1878 × 2670 pixels, smaller than the inner screenshot size. Check every capture against the table before you upload, rather than assuming a device-resolution screenshot will be accepted.

What to prepare now

Screenshots of an app that has not been adapted are a poor advertisement, so the order of work matters more than the upload date:

  1. Adapt the layout first. The checklist lists what to fix, blockers first.
  2. Plan one screenshot per display. The closed outer display shows your phone layout with side controls; the open inner display is where a sidebar or a two-column layout earns its place.
  3. Capture them from the simulator once Xcode 27.1 is available, and check the output against the sizes above.

When uploading opens, you will have a set ready rather than a scramble.

Last checked against Apple’s specification on 16 September 2026.

Last verified . Sourced from Apple’s iPhone Duo developer material — see the written index.

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