iPhone Duo vs iPhone 17 Pro Max
Quick answer
The iPhone 17 Pro Max is 45.6 millimetres1.80 inches taller and 2.55 millimetres0.10 inches thinner than the iPhone Duo.
The iPhone 17 Pro Max is 86.6 millimetres3.41 inches narrower and 45.6 millimetres1.80 inches taller than the iPhone Duo.
The iPhone Duo from Apple is a brand-new foldable you can preorder at full price, while the iPhone 17 Pro Max on Amazon (paid link) is a discontinued slab only available renewed. You pay a premium for the new shape and longer battery, but the older phone saves cash and fits your pocket better. Pick the Duo for endurance, or the 17 Pro Max for value and compactness. You might also consider the iPhone 17 Pro (paid link) if you want something slightly smaller.
Paid link.
Easier one-handed: iPhone Duo
Pocket: iPhone 17 Pro Max
Weight difference: Noticeable
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 Pro Max: 163.4 by 78 by 8.75 millimetres, 233 grams.iPhone Duo: 117.8 by 164.6 by 5.2 millimetres, 254 grams. iPhone 17 Pro Max: 163.4 by 78 by 8.75 millimetres, 233 grams.
Duo, 17 Pro Max shown at 2.1 pixels per millimetre.
iPhone DuoiPhone Duo
from $1,999 at launch, ships 23 October.
See on AppleiPhone 17 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
Height: Duo 117.8 millimetres, 17 Pro Max 163.4 millimetres.Height: Duo 4.64 inches, 17 Pro Max 6.43 inches.Width: Duo 84.1 millimetres, 17 Pro Max 78.0 millimetres.Width: Duo 3.31 inches, 17 Pro Max 3.07 inches.Depth: Duo 11.30 millimetres, 17 Pro Max 8.75 millimetres.Depth: Duo 0.44 inches, 17 Pro Max 0.34 inches.Weight: Duo 254 grams, 17 Pro Max 233 grams.Weight: Duo 8.96 ounces, 17 Pro Max 8.22 ounces.
Height: Duo 117.8 millimetres, 17 Pro Max 163.4 millimetres.Height: Duo 4.64 inches, 17 Pro Max 6.43 inches.Width: Duo 164.6 millimetres, 17 Pro Max 78.0 millimetres.Width: Duo 6.48 inches, 17 Pro Max 3.07 inches.Depth: Duo 5.20 millimetres, 17 Pro Max 8.75 millimetres.Depth: Duo 0.20 inches, 17 Pro Max 0.34 inches.Weight: Duo 254 grams, 17 Pro Max 233 grams.Weight: Duo 8.96 ounces, 17 Pro Max 8.22 ounces.
Specifications
| Specification | Duo | 17 Pro Max |
|---|---|---|
| Height | 117.8 millimetres4.64 inches117.8 millimetres4.64 inches | 163.4 millimetres, 45.6 millimetres more6.43 inches, 1.80 inches more163.4 millimetres, 45.6 millimetres more6.43 inches, 1.80 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 | 78.0 millimetres, 6.1 millimetres less3.07 inches, 0.24 inches less78.0 millimetres, 86.6 millimetres less3.07 inches, 3.41 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 | 8.75 millimetres, 2.55 millimetres less0.34 inches, 0.10 inches less8.75 millimetres, 3.55 millimetres more0.34 inches, 0.14 inches more |
| Depth, open | 5.20 millimetres0.20 inches | — |
| Depth, closed | 11.30 millimetres0.44 inches | — |
| Weight | 254 grams8.96 ounces254 grams8.96 ounces | 233 grams, 21 grams less8.22 ounces, 0.74 ounces less233 grams, 21 grams less8.22 ounces, 0.74 ounces less |
| Volume | 111.9 cubic centimetres6.83 cubic inches100.8 cubic centimetres6.15 cubic inches | 111.5 cubic centimetres, 0.4 cubic centimetres less6.81 cubic inches, 0.03 cubic inches less111.5 cubic centimetres, 10.7 cubic centimetres more6.81 cubic inches, 0.65 cubic inches more |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 89 percent90 percent | 91 percent, 2 percent more91 percent, the same |
| Display size — Screen size is always quoted in inches. | 5.4 inches7.6 inches | 6.9 inches, 1.5 inches more6.9 inches, 0.7 inches less |
| Resolution | 1398 × 20341878 × 2670 | 1320 × 28681320 × 2868 |
| 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 | 38 hrs38 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 – 2 TB256 GB – 2 TB |
| Launch price — Base configuration at launch, in US dollars. | 1,999 dollars1,999 dollars | 1,199 dollars, 800 dollars less1,199 dollars, 800 dollars less |
| Released | Oct 2026Oct 2026 | Sep 2025Sep 2025 |
| Status | CurrentCurrent | DiscontinuedDiscontinued |
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Questions about these phones
How much taller is the iPhone 17 Pro Max than the iPhone Duo?
The iPhone 17 Pro Max is 45.6 mm taller than the iPhone Duo. It is also 6.1 mm narrower.
Which phone is lighter, the iPhone Duo or the iPhone 17 Pro Max?
The iPhone 17 Pro Max is 21 g lighter than the iPhone Duo. This weight difference is noticeable in hand.
What is the screen size difference between the iPhone Duo and iPhone 17 Pro Max?
The iPhone 17 Pro Max has a 6.9 inch display while the iPhone Duo has a 5.4 inch display. The difference is 1.5 inches.
Is the iPhone Duo easier to use one-handed than the iPhone 17 Pro Max?
Yes, the iPhone Duo is rated easier for one-handed use. It is also better for small hands.
Does the iPhone 17 Pro Max fit in a typical men's jeans pocket?
The iPhone 17 Pro Max fits in a typical men's jeans pocket. The iPhone Duo does not fit in either men's or women's jeans pockets.
Is upgrading from the iPhone Duo to the iPhone 17 Pro Max worth it for size?
The iPhone 17 Pro Max is taller and lighter but narrower than the iPhone Duo. Whether a size-only upgrade is worth it depends on your preference.