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iPhone 18 Pro Max vs iPhone 16 Pro Max

Quick answer

The iPhone 16 Pro Max is the same size as the iPhone 18 Pro Max, 22 grams0.78 ounces lighter.

The iPhone 18 Pro Max on Amazon (paid link) brings longer battery life and a two-generation chip jump, yet the physical footprint barely shifts. You'll notice the weight difference and the extra hours you get away from a charger. If you are upgrading, take the newer model; if not, the renewed 16 Pro Max (paid link) holds up.

Paid link.

Easier one-handedSame

PocketiPhone 16 Pro Max

Weight differenceNoticeable

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HeightWidthDepthWeight18 Pro Max163.4 millimetres6.43 inches78.0 millimetres3.07 inches8.75 millimetres0.34 inches249 grams8.78 ounces16 Pro Max163.0 millimetres, 0.4 millimetres less6.42 inches, 0.02 inches less77.6 millimetres, 0.4 millimetres less3.06 inches, 0.02 inches less8.25 millimetres, 0.50 millimetres less0.32 inches, 0.02 inches less227 grams, 22 grams less8.01 ounces, 0.78 ounces less

Height: 18 Pro Max 163.4 millimetres, 16 Pro Max 163.0 millimetres.Height: 18 Pro Max 6.43 inches, 16 Pro Max 6.42 inches.Width: 18 Pro Max 78.0 millimetres, 16 Pro Max 77.6 millimetres.Width: 18 Pro Max 3.07 inches, 16 Pro Max 3.06 inches.Depth: 18 Pro Max 8.75 millimetres, 16 Pro Max 8.25 millimetres.Depth: 18 Pro Max 0.34 inches, 16 Pro Max 0.32 inches.Weight: 18 Pro Max 249 grams, 16 Pro Max 227 grams.Weight: 18 Pro Max 8.78 ounces, 16 Pro Max 8.01 ounces.

Specifications

Specifications for iPhone 18 Pro Max, iPhone 16 Pro Max. Differences are given against iPhone 18 Pro Max.
Specification18 Pro Max16 Pro Max
Height163.4 millimetres6.43 inches163.0 millimetres, 0.4 millimetres less6.42 inches, 0.02 inches less
Width78.0 millimetres3.07 inches77.6 millimetres, 0.4 millimetres less3.06 inches, 0.02 inches less
Depth8.75 millimetres0.34 inches8.25 millimetres, 0.50 millimetres less0.32 inches, 0.02 inches less
Weight249 grams8.78 ounces227 grams, 22 grams less8.01 ounces, 0.78 ounces less
Volume111.5 cubic centimetres6.81 cubic inches104.4 cubic centimetres, 7.2 cubic centimetres less6.37 cubic inches, 0.44 cubic inches less
Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure.91 percent91 percent, 1 percent more
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 ProA18 Pro
Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity.45 hrs33 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 – 1 TB
Launch price — Base configuration at launch, in US dollars.1,299 dollars1,199 dollars, 100 dollars less
ReleasedSep 2026Sep 2024
StatusCurrentDiscontinued

Dimensions

The iPhone 16 Pro Max is 0.4 mm (0.02 in) shorter, 0.4 mm (0.02 in) narrower, 0.50 mm (0.02 in) thinner and 22 g (0.78 oz) lighter than the iPhone 18 Pro Max. 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 16 Pro Max measures 163.0 × 77.6 × 8.25 mm (6.42 × 3.06 × 0.32 in) and weighs 227 g (8.01 oz).

Questions about these phones

How much bigger is the iPhone 18 Pro Max than the iPhone 16 Pro Max?

The iPhone 18 Pro Max is 0.4 mm taller, 0.4 mm wider, and 0.5 mm thicker than the iPhone 16 Pro Max.

Is the iPhone 18 Pro Max heavier than the iPhone 16 Pro Max?

Yes, the iPhone 18 Pro Max weighs 22 grams more than the iPhone 16 Pro Max, which is a noticeable difference.

Do the iPhone 18 Pro Max and iPhone 16 Pro Max have the same screen size?

Both phones have a 6.9-inch display with identical resolution and pixel density.

Which phone is easier to use one-handed, the iPhone 18 Pro Max or iPhone 16 Pro Max?

Both devices are considered equally difficult to use one-handed due to their large dimensions.

Does the iPhone 18 Pro Max fit in a typical men's jeans pocket?

The iPhone 18 Pro Max fits in a typical men's jeans pocket, but the iPhone 16 Pro Max is more pocketable due to its lighter weight and slimmer profile.

Is upgrading from the iPhone 16 Pro Max to the iPhone 18 Pro Max worth it for size alone?

No, the size difference is minimal and the iPhone 16 Pro Max remains a better choice for those prioritizing portability.