iPhone Duo vs iPhone 17 Air
Quick answer
The iPhone 17 Air is 38.4 millimetres1.51 inches taller and 89 grams3.14 ounces lighter than the iPhone Duo.
The iPhone 17 Air is 89.9 millimetres3.54 inches narrower and 89 grams3.14 ounces lighter than the iPhone Duo.
The iPhone Duo on Amazon (paid link) just arrived with a folding design, but it costs significantly more than the iPhone 17 Air (paid link). You will get more battery life on the Duo, while the Air is lighter and easier to slip into a pocket. Choose the Air for portability or the Duo if you want the newest form factor and endurance.
Paid link.
Easier one-handed: Unclear
Pocket: iPhone 17 Air
Weight difference: Noticeable
iPhone DuoiPhone Duo
from $1,999 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 17 Air
from $999 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
TRUE SCALE · 1.2 PX/MM
TRUE SCALE · 2.1 PX/MM
Hand: US Army ANSUR II, 2012 (sex-balanced median). Pockets: The Pudding, 2018. Card: ISO/IEC 7810 ID-1.
iPhone Duo: 117.8 by 84.1 by 11.3 millimetres, 254 grams. iPhone 17 Air: 156.2 by 74.7 by 5.64 millimetres, 165 grams.iPhone Duo: 117.8 by 164.6 by 5.2 millimetres, 254 grams. iPhone 17 Air: 156.2 by 74.7 by 5.64 millimetres, 165 grams.
Duo, 17 Air shown at 2.1 pixels per millimetre.
iPhone DuoiPhone Duo
from $1,999 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 17 Air
from $999 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
Height: Duo 117.8 millimetres, 17 Air 156.2 millimetres.Height: Duo 4.64 inches, 17 Air 6.15 inches.Width: Duo 84.1 millimetres, 17 Air 74.7 millimetres.Width: Duo 3.31 inches, 17 Air 2.94 inches.Depth: Duo 11.30 millimetres, 17 Air 5.64 millimetres.Depth: Duo 0.44 inches, 17 Air 0.22 inches.Weight: Duo 254 grams, 17 Air 165 grams.Weight: Duo 8.96 ounces, 17 Air 5.82 ounces.
Height: Duo 117.8 millimetres, 17 Air 156.2 millimetres.Height: Duo 4.64 inches, 17 Air 6.15 inches.Width: Duo 164.6 millimetres, 17 Air 74.7 millimetres.Width: Duo 6.48 inches, 17 Air 2.94 inches.Depth: Duo 5.20 millimetres, 17 Air 5.64 millimetres.Depth: Duo 0.20 inches, 17 Air 0.22 inches.Weight: Duo 254 grams, 17 Air 165 grams.Weight: Duo 8.96 ounces, 17 Air 5.82 ounces.
Specifications
| Specification | Duo | 17 Air |
|---|---|---|
| Height | 117.8 millimetres4.64 inches117.8 millimetres4.64 inches | 156.2 millimetres, 38.4 millimetres more6.15 inches, 1.51 inches more156.2 millimetres, 38.4 millimetres more6.15 inches, 1.51 inches more |
| Height, open | 117.8 millimetres4.64 inches | — |
| Height, closed | 117.8 millimetres4.64 inches | — |
| Width | 84.1 millimetres3.31 inches164.6 millimetres6.48 inches | 74.7 millimetres, 9.4 millimetres less2.94 inches, 0.37 inches less74.7 millimetres, 89.9 millimetres less2.94 inches, 3.54 inches less |
| Width, open | 164.6 millimetres6.48 inches | — |
| Width, closed | 84.1 millimetres3.31 inches | — |
| Depth | 11.30 millimetres0.44 inches5.20 millimetres0.20 inches | 5.64 millimetres, 5.66 millimetres less0.22 inches, 0.22 inches less5.64 millimetres, 0.44 millimetres more0.22 inches, 0.02 inches more |
| Depth, open | 5.20 millimetres0.20 inches | — |
| Depth, closed | 11.30 millimetres0.44 inches | — |
| Weight | 254 grams8.96 ounces254 grams8.96 ounces | 165 grams, 89 grams less5.82 ounces, 3.14 ounces less165 grams, 89 grams less5.82 ounces, 3.14 ounces less |
| Volume | 111.9 cubic centimetres6.83 cubic inches100.8 cubic centimetres6.15 cubic inches | 65.8 cubic centimetres, 46.1 cubic centimetres less4.02 cubic inches, 2.82 cubic inches less65.8 cubic centimetres, 35.0 cubic centimetres less4.02 cubic inches, 2.14 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 89 percent90 percent | 90 percent, 1 percent more90 percent, the same |
| Display size — Screen size is always quoted in inches. | 5.4 inches7.6 inches | 6.5 inches, 1.1 inches more6.5 inches, 1.1 inches less |
| Resolution | 1398 × 20341878 × 2670 | 1260 × 27361260 × 2736 |
| Pixel density | 460 pixels per inch430 pixels per inch | 460 pixels per inch, the same460 pixels per inch, 30 pixels per inch more |
| Cutout | Dynamic IslandNone | Dynamic IslandDynamic Island |
| Rear main | 48MP Fusion f/1.648MP Fusion f/1.6 | 48MP48MP |
| Rear ultra-wide | 48MP Ultra Wide f/2.248MP Ultra Wide f/2.2 | —— |
| Rear telephoto | —— | —— |
| Front camera | 12MP Center Stage f/2.2 (outer), under-display FaceTime f/1.8 (inner)12MP Center Stage f/2.2 (outer), under-display FaceTime f/1.8 (inner) | 12MP12MP |
| Chip | A20 ProA20 Pro | A19 ProA19 Pro |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 44 hrs31 hrs | 27 hrs27 hrs |
| Port | USB-CUSB-C | USB-CUSB-C |
| Wireless | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem | 5G · Wi-Fi · Bluetooth5G · Wi-Fi · Bluetooth |
| Water resistance | IP68 (6m for 30 min)IP68 (6m for 30 min) | IP68 (6m for 30 min)IP68 (6m for 30 min) |
| Storage | 256 GB – 2 TB256 GB – 2 TB | 256 GB – 1 TB256 GB – 1 TB |
| Launch price — Base configuration at launch, in US dollars. | 1,999 dollars1,999 dollars | 999 dollars, 1000 dollars less999 dollars, 1000 dollars less |
| Released | Oct 2026Oct 2026 | Sep 2025Sep 2025 |
| Status | CurrentCurrent | CurrentCurrent |
Dimensions
The iPhone 17 Air is 38.4 mm (1.51 in) taller, 9.4 mm (0.37 in) narrower, 5.66 mm (0.22 in) thinner and 89 g (3.14 oz) lighter than the iPhone Duo (closed). The iPhone Duo (closed) measures 117.8 × 84.1 × 11.30 mm (4.64 × 3.31 × 0.44 in) and weighs 254 g (8.96 oz). The iPhone Duo (open) measures 117.8 × 164.6 × 5.20 mm (4.64 × 6.48 × 0.20 in) and weighs 254 g (8.96 oz). The iPhone 17 Air measures 156.2 × 74.7 × 5.64 mm (6.15 × 2.94 × 0.22 in) and weighs 165 g (5.82 oz).
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Questions about these phones
How does the size of the iPhone Duo compare to the iPhone 17 Air?
The iPhone 17 Air is 38.4 mm taller and 9.4 mm narrower than the iPhone Duo. The iPhone Duo is 11.3 mm deep while the iPhone 17 Air is 5.6 mm deep.
Which phone is lighter to carry around?
The iPhone 17 Air weighs 165 g and is 89 g lighter than the iPhone Duo. The iPhone Duo weighs 254 g.
What is the difference in screen size?
The iPhone 17 Air has a 6.5 inch screen which is 1.1 inch larger than the iPhone Duo. The iPhone Duo screen measures 5.4 inches.
Are these phones comfortable for one-handed use?
One-handed use is unclear for these phones. The iPhone 17 Air is better for small hands.
Do these phones fit in jeans pockets?
The iPhone 17 Air fits in a typical men's jeans pocket while the iPhone Duo does not. The iPhone Duo does not fit in women's pockets either.
Is a size only upgrade worth it?
Whether a size only upgrade is worth it depends. The weight difference between the iPhone Duo and iPhone 17 Air is noticeable.