iPhone Duo (folded) vs iPhone 18 Pro
Quick answer
The iPhone 18 Pro is 12.2 millimetres0.48 inches narrower and 32.2 millimetres1.27 inches taller than the iPhone Duo (folded).
iPhone Duo folds to a pocket-friendly size; iPhone 18 Pro stays larger.
Easier one-handed: iPhone Duo (folded)
Pocket: iPhone 18 Pro
Weight difference: Noticeable
- iPhone Duo fits fewer jeans pockets than iPhone 18 Pro.
- iPhone 18 Pro feels noticeably heavier in a jacket after an hour.
- No later iPhone has recreated the Duo’s folded one‑handed reach.
TRUE SCALE · 1.7 PX/MM
TRUE SCALE · 2.2 PX/MM
Hand: US Army ANSUR II, 2012 (sex-balanced median). Pockets: The Pudding, 2018. Card: ISO/IEC 7810 ID-1.
iPhone Duo (folded): 117.8 by 84.1 by 11.3 millimetres, 254 grams. iPhone 18 Pro: 150 by 71.9 by 8.75 millimetres, 211 grams.
Duo, 18 Pro shown at 2.2 pixels per millimetre.
- iPhone Duo (folded) — from $1,999 at launch, ships 23 October.
- iPhone 18 Pro — from $1,199 at launch, ships 18 September.
Height: Duo 117.8 millimetres, 18 Pro 150.0 millimetres.Height: Duo 4.64 inches, 18 Pro 5.91 inches.Width: Duo 84.1 millimetres, 18 Pro 71.9 millimetres.Width: Duo 3.31 inches, 18 Pro 2.83 inches.Depth: Duo 11.30 millimetres, 18 Pro 8.75 millimetres.Depth: Duo 0.44 inches, 18 Pro 0.34 inches.Weight: Duo 254 grams, 18 Pro 211 grams.Weight: Duo 8.96 ounces, 18 Pro 7.44 ounces.
Specifications
| Specification | Duo | 18 Pro |
|---|---|---|
| Height | 117.8 millimetres4.64 inches | 150.0 millimetres, 32.2 millimetres more5.91 inches, 1.27 inches more |
| Width | 84.1 millimetres3.31 inches | 71.9 millimetres, 12.2 millimetres less2.83 inches, 0.48 inches less |
| Depth | 11.30 millimetres0.44 inches | 8.75 millimetres, 2.55 millimetres less0.34 inches, 0.10 inches less |
| Weight | 254 grams8.96 ounces | 211 grams, 43 grams less7.44 ounces, 1.52 ounces less |
| Volume | 111.9 cubic centimetres6.83 cubic inches | 94.4 cubic centimetres, 17.6 cubic centimetres less5.76 cubic inches, 1.07 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 89 percent | 89 percent, 1 percent more |
| Display size — Screen size is always quoted in inches. | 5.4 inches | 6.3 inches, 0.9 inches more |
| Resolution | 1398 × 2034 | 1206 × 2622 |
| Pixel density | 460 pixels per inch | 460 pixels per inch, the same |
| Cutout | Dynamic Island | Dynamic Island |
| Rear main | 48MP Fusion f/1.6 | 48MP Fusion, variable aperture f/1.48-f/4.0 |
| Rear ultra-wide | 48MP Ultra Wide f/2.2 | 48MP Fusion f/2.2 |
| Rear telephoto | — | 48MP Fusion 100mm (4x optical, 8x optical-quality) |
| Front camera | 12MP Center Stage f/2.2 (outer), under-display FaceTime f/1.8 (inner) | 18MP Center Stage f/1.9 |
| Chip | A20 Pro | A20 Pro |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 44 hrs | 36 hrs |
| Port | USB-C | USB-C |
| Wireless | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem |
| Water resistance | IP68 (6m for 30 min) | IP68 (6m for 30 min) |
| Storage | 256 GB – 2 TB | 256 GB – 2 TB |
| Launch price — Base configuration at launch, in US dollars. | 1,999 dollars | 1,199 dollars, 800 dollars less |
| Released | Oct 2026 | Sep 2026 |
| Status | Current | Current |
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Questions about these phones
Is the iPhone Duo smaller than the iPhone 18 Pro?
Yes. When folded, the iPhone Duo is 117.8 mm tall, 84.1 mm wide and 11.3 mm deep, while the iPhone 18 Pro is 150 mm tall, 71.9 mm wide and 8.75 mm deep.
Can I use the iPhone Duo one‑handed easily?
The folded size is about 4.64 in tall and 3.31 in wide, which most people can reach with one hand, but the depth adds to hand fatigue.
Does the iPhone 18 Pro fit in a typical jeans pocket?
Median men's jeans pockets accept the iPhone 18 Pro but not the iPhone Duo.
Which phone feels lighter in a jacket?
The iPhone 18 Pro at 211 g feels noticeably heavier in a jacket compared with the Duo at 254 g.
Is the screen of the iPhone Duo usable when folded?
The folded display is 5.4 inches, with 88.66% screen‑to‑body ratio, readable but smaller than the 6.3‑inch iPhone 18 Pro.
Has any newer iPhone matched the iPhone Duo’s folded size?
No later iPhone has recreated the Duo’s folded one‑handed reach and pocket profile.