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iPhone 18 Pro vs iPhone Duo

Quick answer

The iPhone Duo is 12.2 millimetres0.48 inches wider and 32.2 millimetres1.27 inches shorter than the iPhone 18 Pro.

The iPhone Duo is 92.7 millimetres3.65 inches wider and 32.2 millimetres1.27 inches shorter than the iPhone 18 Pro.

The iPhone Duo on Amazon (paid link) arrives today as a thicker, heavier foldable with longer battery life, but it costs $1999 against the Pro's $1199. For most people, the 18 Pro (paid link) is the sharper buy because it slips into pockets easily and feels lighter in hand without sacrificing performance. Only pick the Duo if you really want a folding screen and need every hour of video play.

Paid link.

Easier one-handediPhone 18 Pro

PocketiPhone 18 Pro

Weight differenceNoticeable

Paid link.

Paid link.

HeightWidthDepthWeight18 Pro150.0 millimetres5.91 inches71.9 millimetres2.83 inches8.75 millimetres0.34 inches211 grams7.44 ouncesDuo117.8 millimetres, 32.2 millimetres less4.64 inches, 1.27 inches less84.1 millimetres, 12.2 millimetres more3.31 inches, 0.48 inches more11.30 millimetres, 2.55 millimetres more0.44 inches, 0.10 inches more254 grams, 43 grams more8.96 ounces, 1.52 ounces more

Height: 18 Pro 150.0 millimetres, Duo 117.8 millimetres.Height: 18 Pro 5.91 inches, Duo 4.64 inches.Width: 18 Pro 71.9 millimetres, Duo 84.1 millimetres.Width: 18 Pro 2.83 inches, Duo 3.31 inches.Depth: 18 Pro 8.75 millimetres, Duo 11.30 millimetres.Depth: 18 Pro 0.34 inches, Duo 0.44 inches.Weight: 18 Pro 211 grams, Duo 254 grams.Weight: 18 Pro 7.44 ounces, Duo 8.96 ounces.

HeightWidthDepthWeight18 Pro150.0 millimetres5.91 inches71.9 millimetres2.83 inches8.75 millimetres0.34 inches211 grams7.44 ouncesDuo117.8 millimetres, 32.2 millimetres less4.64 inches, 1.27 inches less164.6 millimetres, 92.7 millimetres more6.48 inches, 3.65 inches more5.20 millimetres, 3.55 millimetres less0.20 inches, 0.14 inches less254 grams, 43 grams more8.96 ounces, 1.52 ounces more

Height: 18 Pro 150.0 millimetres, Duo 117.8 millimetres.Height: 18 Pro 5.91 inches, Duo 4.64 inches.Width: 18 Pro 71.9 millimetres, Duo 164.6 millimetres.Width: 18 Pro 2.83 inches, Duo 6.48 inches.Depth: 18 Pro 8.75 millimetres, Duo 5.20 millimetres.Depth: 18 Pro 0.34 inches, Duo 0.20 inches.Weight: 18 Pro 211 grams, Duo 254 grams.Weight: 18 Pro 7.44 ounces, Duo 8.96 ounces.

Specifications

Specifications for iPhone 18 Pro, iPhone Duo. Differences are given against iPhone 18 Pro.
Specification18 ProDuo
Height150.0 millimetres5.91 inches150.0 millimetres5.91 inches117.8 millimetres, 32.2 millimetres less4.64 inches, 1.27 inches less117.8 millimetres, 32.2 millimetres less4.64 inches, 1.27 inches less
Height, open—117.8 millimetres4.64 inches
Height, closed—117.8 millimetres4.64 inches
Width71.9 millimetres2.83 inches71.9 millimetres2.83 inches84.1 millimetres, 12.2 millimetres more3.31 inches, 0.48 inches more164.6 millimetres, 92.7 millimetres more6.48 inches, 3.65 inches more
Width, open—164.6 millimetres6.48 inches
Width, closed—84.1 millimetres3.31 inches
Depth8.75 millimetres0.34 inches8.75 millimetres0.34 inches11.30 millimetres, 2.55 millimetres more0.44 inches, 0.10 inches more5.20 millimetres, 3.55 millimetres less0.20 inches, 0.14 inches less
Depth, open—5.20 millimetres0.20 inches
Depth, closed—11.30 millimetres0.44 inches
Weight211 grams7.44 ounces211 grams7.44 ounces254 grams, 43 grams more8.96 ounces, 1.52 ounces more254 grams, 43 grams more8.96 ounces, 1.52 ounces more
Volume94.4 cubic centimetres5.76 cubic inches94.4 cubic centimetres5.76 cubic inches111.9 cubic centimetres, 17.6 cubic centimetres more6.83 cubic inches, 1.07 cubic inches more100.8 cubic centimetres, 6.5 cubic centimetres more6.15 cubic inches, 0.39 cubic inches more
Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure.89 percent89 percent89 percent, 1 percent less90 percent, 1 percent more
Display size — Screen size is always quoted in inches.6.3 inches6.3 inches5.4 inches, 0.9 inches less7.6 inches, 1.3 inches more
Resolution1206 × 26221206 × 26221398 × 20341878 × 2670
Pixel density460 pixels per inch460 pixels per inch460 pixels per inch, the same430 pixels per inch, 30 pixels per inch less
CutoutDynamic IslandDynamic IslandDynamic IslandNone
Rear main48MP Fusion, variable aperture f/1.48-f/4.048MP Fusion, variable aperture f/1.48-f/4.048MP Fusion f/1.648MP Fusion f/1.6
Rear ultra-wide48MP Fusion f/2.248MP Fusion f/2.248MP Ultra Wide f/2.248MP Ultra Wide f/2.2
Rear telephoto48MP Fusion 100mm (4x optical, 8x optical-quality)48MP Fusion 100mm (4x optical, 8x optical-quality)——
Front camera18MP Center Stage f/1.918MP Center Stage f/1.912MP 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)
ChipA20 ProA20 ProA20 ProA20 Pro
Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity.36 hrs36 hrs44 hrs31 hrs
PortUSB-CUSB-CUSB-CUSB-C
Wireless5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem
Water resistanceIP68 (6m for 30 min)IP68 (6m for 30 min)IP68 (6m for 30 min)IP68 (6m for 30 min)
Storage256 GB – 2 TB256 GB – 2 TB256 GB – 2 TB256 GB – 2 TB
Launch price — Base configuration at launch, in US dollars.1,199 dollars1,199 dollars1,999 dollars, 800 dollars more1,999 dollars, 800 dollars more
ReleasedSep 2026Sep 2026Oct 2026Oct 2026
StatusCurrentCurrentCurrentCurrent

Dimensions

The iPhone Duo (closed) is 32.2 mm (1.27 in) shorter, 12.2 mm (0.48 in) wider, 2.55 mm (0.10 in) thicker and 43 g (1.52 oz) heavier than the iPhone 18 Pro. The iPhone 18 Pro measures 150.0 × 71.9 × 8.75 mm (5.91 × 2.83 × 0.34 in) and weighs 211 g (7.44 oz). 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).

Also compared with iPhone 18 Pro

Questions about these phones

How much shorter is the iPhone Duo than the iPhone 18 Pro?

The iPhone Duo is 32.2 mm shorter than the iPhone 18 Pro when closed. The iPhone 18 Pro height is 150 mm.

How much heavier is the iPhone Duo compared to the iPhone 18 Pro?

The iPhone Duo is 43 g heavier than the iPhone 18 Pro. The iPhone Duo weighs 254 g while the iPhone 18 Pro weighs 211 g.

Which phone has a larger screen, the iPhone 18 Pro or the iPhone Duo?

The iPhone 18 Pro has a 6.3 inch screen while the iPhone Duo has a 5.4 inch screen. The iPhone 18 Pro display is 0.9 inches larger.

Is the iPhone Duo easier to hold one-handed than the iPhone 18 Pro?

No, the iPhone 18 Pro is easier to use one-handed and better for small hands. The iPhone Duo is wider at 84.1 mm when closed.

Will the iPhone Duo fit in a typical men's jeans pocket?

No, the iPhone Duo does not fit in a typical men's jeans pocket. The iPhone 18 Pro fits in a typical men's jeans pocket.

Is the iPhone Duo a size-only upgrade worth it over the iPhone 18 Pro?

It depends on your preference for a foldable design versus practical size. The iPhone 18 Pro is more pocketable and lighter than the iPhone Duo.