App Store iPhone Duo outer display screenshot size: 1398 × 2034
App Store iPhone Duo outer display screenshots are 1398 x 2034 px: PNG or JPEG, no alpha channel, 1 to 10 per listing, 3 recommended. Accepted, and not the one we recommend for this family.
Verified 2026-09-12 against the official documentation
- Dimensions
- 1398 x 2034 px
- Display class
- iPhone Duo outer display
- Devices it covers
- iPhone Duo
- Aspect ratio
- 233:339
- Orientation
- portrait
- Accepted formats
- PNG or JPEG
- Transparency
- Not allowed. No alpha channel, even when every pixel is opaque.
- How many
- 1 to 10, 3 recommended
- Do we recommend it
- No. The store accepts it, and another size of the same family is the better one to ship.
"The dimensions of one or more screenshots are wrong"
App Store Connect checks the pixel size against an exact list, so a file that is a few pixels off is refused with that message and no further detail. For iPhone Duo outer display the accepted sizes are 1398 × 2034, and Apple also lists the landscape pairs of each.
The usual cause is a file exported for another class — a 6.5-inch capture uploaded into the 6.9-inch slot — or a tool that resized to something close but not exact. Re-export at one of the sizes above; nothing else clears it, because App Store Connect does not resize for you.
Every size the store lists for this class
- 1398×2034 outer display
- 2034×1398 outer display
- 2007×2853 inner display
- 2853×2007 inner display
The rules that apply here
Only the largest display of each family is required
Apple asks for a 6.9-inch or 6.5-inch iPhone set and, for apps that run on iPad, a 13-inch set. Every smaller class is scaled from those unless you upload it.
The canonical targets are 1320 x 2868 and 2064 x 2752; the older 1290 x 2796 and 2048 x 2732 remain available and are still accepted.
Alpha channels are rejected
Screenshots cannot contain transparency, and a PNG carrying an alpha channel is refused even when every pixel is opaque.
Exports default to JPEG, and PNG output is re-encoded as 24-bit truecolor. Every file is inspected after encoding.
iPhone Duo has its own two screenshot sizes
The iPhone section now opens with iPhone Duo: 1398 x 2034 for the outer display and 2007 x 2853 for the inner one. Neither is close enough to the 6.9-inch ratio to be scaled from it.
Both sizes are available as targets and are optional: Apple has not published whether the class is required. Nothing in the studio asks for them until you pick them.
You do not have to keep this page open.
Design one set and Easy App Screens renders it at this size and at every other one your listing takes, in each of your languages, then re-reads each file and checks it against exactly these numbers before it lets you download.
Start freeShipping to both stores?
The equivalent on the other store is Google Play Android tablet 9:16, 1440 × 2560. One design covers both.