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iPhone 18 Pro Max vs iPhone 17 Pro Max

Quick answer

The iPhone 17 Pro Max is the same size as the iPhone 18 Pro Max, 16 grams0.56 ounces lighter.

The iPhone 18 Pro Max on Amazon (paid link) shares the exact body as the iPhone 17 Pro Max (paid link), so fit feels identical. The chip gains are marginal, but battery life stretches notably. With the 17 now discontinued and available renewed, you must decide if the extra stamina is worth the premium over last year's model.

Paid link.

Easier one-handedSame

PocketSame

Weight differenceNoticeable

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Paid link.

HeightWidthDepthWeight18 Pro Max163.4 millimetres6.43 inches78.0 millimetres3.07 inches8.75 millimetres0.34 inches249 grams8.78 ounces17 Pro Max163.4 millimetres, the same6.43 inches, the same78.0 millimetres, the same3.07 inches, the same8.75 millimetres, the same0.34 inches, the same233 grams, 16 grams less8.22 ounces, 0.56 ounces less

Height: 18 Pro Max 163.4 millimetres, 17 Pro Max 163.4 millimetres.Height: 18 Pro Max 6.43 inches, 17 Pro Max 6.43 inches.Width: 18 Pro Max 78.0 millimetres, 17 Pro Max 78.0 millimetres.Width: 18 Pro Max 3.07 inches, 17 Pro Max 3.07 inches.Depth: 18 Pro Max 8.75 millimetres, 17 Pro Max 8.75 millimetres.Depth: 18 Pro Max 0.34 inches, 17 Pro Max 0.34 inches.Weight: 18 Pro Max 249 grams, 17 Pro Max 233 grams.Weight: 18 Pro Max 8.78 ounces, 17 Pro Max 8.22 ounces.

Specifications

Specifications for iPhone 18 Pro Max, iPhone 17 Pro Max. Differences are given against iPhone 18 Pro Max.
Specification18 Pro Max17 Pro Max
Height163.4 millimetres6.43 inches163.4 millimetres, the same6.43 inches, the same
Width78.0 millimetres3.07 inches78.0 millimetres, the same3.07 inches, the same
Depth8.75 millimetres0.34 inches8.75 millimetres, the same0.34 inches, the same
Weight249 grams8.78 ounces233 grams, 16 grams less8.22 ounces, 0.56 ounces less
Volume111.5 cubic centimetres6.81 cubic inches111.5 cubic centimetres, the same6.81 cubic inches, the same
Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure.91 percent91 percent, the same
Display size — Screen size is always quoted in inches.6.9 inches6.9 inches, the same
Resolution1320 × 28681320 × 2868
Pixel density460 pixels per inch460 pixels per inch, the same
CutoutDynamic IslandDynamic Island
Rear main48MP Fusion, variable aperture f/1.48-f/4.048MP
Rear ultra-wide48MP Fusion f/2.2—
Rear telephoto48MP Fusion 100mm (4x optical, 8x optical-quality)—
Front camera18MP Center Stage f/1.912MP
ChipA20 ProA19 Pro
Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity.45 hrs38 hrs
PortUSB-CUSB-C
Wireless5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi · Bluetooth
Water resistanceIP68 (6m for 30 min)IP68 (6m for 30 min)
Storage256 GB – 2 TB256 GB – 2 TB
Launch price — Base configuration at launch, in US dollars.1,299 dollars1,199 dollars, 100 dollars less
ReleasedSep 2026Sep 2025
StatusCurrentDiscontinued

Dimensions

The iPhone 17 Pro Max is the same size as the iPhone 18 Pro Max, 16 g (0.56 oz) lighter. The iPhone 18 Pro Max measures 163.4 × 78.0 × 8.75 mm (6.43 × 3.07 × 0.34 in) and weighs 249 g (8.78 oz). The iPhone 17 Pro Max measures 163.4 × 78.0 × 8.75 mm (6.43 × 3.07 × 0.34 in) and weighs 233 g (8.22 oz).

Also compared with iPhone 18 Pro Max

Questions about these phones

How do the physical dimensions compare between the two phones?

The iPhone 18 Pro Max and iPhone 17 Pro Max share the same chassis dimensions, with identical height, width, and depth measurements.

Is there a noticeable weight difference between them?

The iPhone 18 Pro Max weighs 249 grams while the iPhone 17 Pro Max weighs 233 grams, a difference of 16 grams that is noticeable in hand.

Do they have different screen sizes?

Both phones feature a 6.9-inch display with identical resolution and pixel density, so the screen area is the same.

Which phone is easier to use with one hand?

The iPhone 18 Pro Max and iPhone 17 Pro Max are equally easy to use one-handed due to their identical width and overall size.

Will either phone fit in a typical jeans pocket?

Both models fit in a typical men's jeans pocket but do not fit in a typical women's jeans pocket, making them equally pocketable.

Is upgrading to the newer model worth it for size alone?

Since the size is the same, the upgrade value depends on whether you prioritize the longer battery life on the iPhone 18 Pro Max.