iPhone Duo screen size guide.
Screen resolution, a device frame, and an exported marketing image describe three different things. Use the table below to check the display you are preparing.
Hardware display dimensions
| Display | Hardware pixels |
|---|---|
| Open inner display | 1878 × 2670 |
| Closed outer display | 1398 × 2034 |
These values describe the display hardware. A mockup places your existing screenshot inside a device frame; it does not adapt the app UI or change its supported orientations.
What DuoScreenshot exports
The free generator creates a 4:3 marketing canvas at 2560 × 1920 or 1280 × 960 pixels. It uses the open inner display bezel, keeps the image proportional, and supports Fit or centered Fill.
Marketing mockup or App Store screenshot?
App Store Connect has separate accepted sizes and content rules. The marketing PNG from this tool is not an App Store submission file and should not be described as one.
Upload one PNG or JPEG. No signup, no watermark, and local browser processing.
Open the free generator