iPhone Duo (unfolded) vs iPhone 18 Pro
92.7 mm narrower, 32.2 mm taller and 43 g lighter.
Quick answer
iPhone 18 Pro is built for standard one-handed mobile use and daily carry, while iPhone Duo (unfolded) operates as an ultra-wide reading and multitasking canvas. At 71.9 mm wide and 150 mm tall, iPhone 18 Pro fits in median men's jeans pockets and remains easy to hold with an average adult hand. In contrast, iPhone Duo (unfolded) spans 164.6 mm in width and 117.8 mm in height, requiring two hands at all times and failing to fit median men's or women's pockets. iPhone 18 Pro weighs 211 g compared to the 254 g weight of iPhone Duo (unfolded). For standard phone tasks, iPhone 18 Pro is more practical, whereas iPhone Duo (unfolded) offers a 7.6 in display for tabletop or two-handed viewing.
- iPhone 18 Pro fits median men's jeans pockets, whereas iPhone Duo (unfolded) fits neither median pocket.
- At 164.6 mm wide, iPhone Duo (unfolded) requires two hands, while iPhone 18 Pro allows one-handed grip.
- iPhone Duo (unfolded) provides a 7.6 in screen, compared to 6.3 in on iPhone 18 Pro.
- iPhone 18 Pro is 43 g lighter in hand or pocket than iPhone Duo (unfolded).
TRUE SCALE · 1.2 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 (unfolded): 117.8 by 164.6 by 5.2 millimetres, 254 grams. iPhone 18 Pro: 150 by 71.9 by 8.75 millimetres, 211 grams.
Duo open, 18 Pro shown at 2.2 pixels per millimetre.
Height: Duo open 117.8 millimetres, 18 Pro 150.0 millimetres.Height: Duo open 4.64 inches, 18 Pro 5.91 inches.Width: Duo open 164.6 millimetres, 18 Pro 71.9 millimetres.Width: Duo open 6.48 inches, 18 Pro 2.83 inches.Depth: Duo open 5.20 millimetres, 18 Pro 8.75 millimetres.Depth: Duo open 0.20 inches, 18 Pro 0.34 inches.Weight: Duo open 254 grams, 18 Pro 211 grams.Weight: Duo open 8.96 ounces, 18 Pro 7.44 ounces.
Specifications
| Specification | Duo open | 18 Pro |
|---|---|---|
| Height | 117.8 millimetres4.64 inches | 150.0 millimetres, 32.2 millimetres more5.91 inches, 1.27 inches more |
| Width | 164.6 millimetres6.48 inches | 71.9 millimetres, 92.7 millimetres less2.83 inches, 3.65 inches less |
| Depth | 5.20 millimetres0.20 inches | 8.75 millimetres, 3.55 millimetres more0.34 inches, 0.14 inches more |
| Weight | 254 grams8.96 ounces | 211 grams, 43 grams less7.44 ounces, 1.52 ounces less |
| Volume | 100.8 cubic centimetres6.15 cubic inches | 94.4 cubic centimetres, 6.5 cubic centimetres less5.76 cubic inches, 0.39 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 90 percent | 89 percent, 1 percent less |
| Display size — Screen size is always quoted in inches. | 7.6 inches | 6.3 inches, 1.3 inches less |
| Resolution | 1878 × 2670 | 1206 × 2622 |
| Pixel density | 430 pixels per inch | 458 pixels per inch, 29 pixels per inch more |
| Cutout | None | 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. | 31 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 |
Also compared with iPhone Duo (unfolded)
Questions about these phones
How do the dimensions of iPhone Duo (unfolded) compare to iPhone 18 Pro?
iPhone Duo (unfolded) measures 117.8 mm by 164.6 mm with a depth of 5.2 mm, while iPhone 18 Pro measures 150 mm by 71.9 mm with a depth of 8.75 mm.
How heavy is iPhone Duo (unfolded) compared to iPhone 18 Pro?
iPhone Duo (unfolded) weighs 254 g, whereas iPhone 18 Pro weighs 211 g.
How much larger is the screen on iPhone Duo (unfolded) than iPhone 18 Pro?
iPhone Duo (unfolded) features an expansive 7.6 in display, while iPhone 18 Pro has a 6.3 in display.
Can you use iPhone Duo (unfolded) or iPhone 18 Pro with one hand?
iPhone 18 Pro is 71.9 mm wide and suits one-handed operation in an average adult hand. iPhone Duo (unfolded) spans 164.6 mm wide, making one-handed use impossible.
Does iPhone Duo (unfolded) fit in a pocket like iPhone 18 Pro?
iPhone 18 Pro fits in median men's jeans pockets, whereas iPhone Duo (unfolded) does not fit in median men's or women's pockets.
Is upgrading from iPhone 18 Pro to iPhone Duo (unfolded) worth it for size alone?
Upgrading to iPhone Duo (unfolded) gives a larger 7.6 in workspace at 1999 USD, but iPhone 18 Pro at 1199 USD is far more portable for daily use.