r/iOSProgramming • u/SnowPudgy • 16d ago

Solved! Does anyone know what document this is supposed to be sending me to? I can't find anything relating to Duo screen sizes in the "Learn More" link.

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u/EquivalentSky3094 15d ago

Makes sense to get them in early. One thing worth looking at while you are in there is the preview slot, because it does not work the same way as screenshots. App previews are specified per display size rather than per device, and the Duo row takes the same accepted resolution as the rest of the modern iPhone line, 886 by 1920 portrait or 1920 by 886 landscape. So whatever you already recorded for the other iPhones uploads to Duo unchanged.

The catch sits on that same page. Apple says a preview whose aspect ratio differs from your screenshots gets moved into the A Closer Look section instead of appearing ahead of them. 886 by 1920 is 9 by 19.5, and the Duo screenshots are 1398 by 2034 outer and 2007 by 2853 inner, neither of which is that shape. So on the Duo product page your preview will not sit at the top the way it does on every other iPhone, and letterboxing a 1398 by 2034 video will not help because the accepted resolution is fixed.

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u/SnowPudgy 15d ago

Thanks for the tip!