iPhone Duo screen size and display reference
The 7.6″ inner screen is 626 × 890 points (1878 × 2670 pixels) and the 5.4″ outer screen is 466 × 678 points (1398 × 2034 pixels). Everything below is the detail behind those two lines, including what each display reports to your app.
Displays
| Display | Size | Pixels | Points @3x | Aspect | PPI |
|---|---|---|---|---|---|
| Inner (folding) display | 7.6″ | 1878 × 2670 | 626 × 890 | 1.42 | 430 |
| Outer (cover) display | 5.4″ | 1398 × 2034 | 466 × 678 | 1.45 | 460 |
| iPhone 18 Pro (for comparison) | — | 1206 × 2622 | 402 × 874 | 2.17 | — |
How the point figures are derived
| Display | Published pixels | Scale | Points |
|---|---|---|---|
| Inner (folding) display | 1878 × 2670 | ÷ 3 | 626 × 890 |
| Outer (cover) display | 1398 × 2034 | ÷ 3 | 466 × 678 |
Both divide exactly, with no rounding. If a source gives you different point dimensions for iPhone Duo, divide its own pixel figures by three and see whether they agree with themselves —why sources disagree on this. Pixel dimensions, physical sizes and PPI come from Apple’s technical specifications; the points do not, because Apple does not publish them.
Apple describes the two displays as sharing the same aspect ratio, and for design purposes they effectively do — the published pixel dimensions put them about 2% apart. The aspect column above is calculated from those dimensions, so lay out for a range rather than either number.
Availability
| Announced | 2026-09-09 |
| Pre-orders | 2026-10-16 |
| On sale | 2026-10-23, in more than 70 countries; 28 more from 30 October |
| Ships running | iOS 27.1 |
Size classes
| Display | Horizontal | Vertical | Notes |
|---|---|---|---|
| Inner, either orientation | Regular | Regular | Leaves room for sidebars. Does not honor supported interface orientations. |
| Outer, portrait | Compact | Regular | Familiar iPhone environment. Orientation behaves like any other iPhone. |
| Outer, landscape | Compact | Compact | The tightest case on the device, and where side controls overflow first. |
Why 1.42 matters
The inner display is roughly 1.42 against about 2.17 on iPhone 18 Pro. That is a different shape of screen, not a bigger one, and it drives most of the layout work:
- 16:9 video letterboxes. Fitted to width, a 16:9 frame occupies about 890 × 501 points and leaves roughly 125 points of bar split above and below — close to a fifth of the display. It is still a much larger picture than on a standard iPhone.
- Documents fit unusually well. 1.42 is close to √2, the proportion behind A-series paper. Reading views, feeds and two-column layouts suit it naturally.
- Full-bleed art cut for 2.17 will crop badly. Provide assets that tolerate a squarer frame, or compose around a focal point.
Other developer-relevant hardware
- Both displays: Super Retina XDR OLED, ProMotion to 120 Hz, Always-On, 3000 nits peak outdoor brightness
- Two front cameras, both square sensors with an ultrawide field of view. Through AVFoundation the outer camera streams up to 4K at 120fps and the inner under-display camera up to 1080p at 60fps. Apple’s consumer specifications list the outer as a 12MP Center Stage camera recording 4K Dolby Vision to 60fps in the Camera app
- 48MP Fusion Main and 48MP Fusion Ultra Wide rear cameras; 4K Dolby Vision to 120fps on the Fusion Main
- Apple Pencil (USB-C) support later this year — a first for iPhone
- Grade 5 titanium, Ceramic Shield 2 front, Ceramic Shield back, IP68
- A20 Pro, eSIM only, Touch ID in the side button
- Ships with iOS 27.1
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