Guides

Prepare your simulator build and App Store screenshots.

• App Review and iPhone Duo screenshots: Guidelines 2.3.3 and 2.1(a)

  iPhone Duo screenshots must show your app in use (Guideline 2.3.3) and match the real app (2.3). Mockups that don't, and placeholder content (2.1(a)), are what gets submissions rejected.

• iPhone Duo screenshot sizes for App Store Connect (outer and inner display)

  Apple's iPhone Duo screenshot dimensions in both orientations, with sources. Our service delivers outer 1398 × 2034 and inner native 2007 × 2853 or 2853 × 2007, without rotating or resizing.

• How to make App Store screenshots for iPhone Duo

  Capture iPhone Duo in Xcode 27.1: outer 1398 × 2034 and inner native 2007 × 2853 or 2853 × 2007 PNGs. Keep native dimensions without rotating or resizing.

• iPhone Duo simulator screenshots from the command line (both displays)

  Use xcrun simctl io screenshot --display=1 for the outer display and --display=3 for the inner display, and the hinge CLI to fold and unfold the iPhone Duo simulator.

• How to make a simulator build of your iOS app to share (.app in a zip)

  Build with xcodebuild for 'generic/platform=iOS Simulator', find the .app in Build/Products/*-iphonesimulator, and zip it with ditto -c -k --keepParent. Commands for projects and workspaces.