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iPhone 18 Pro Max vs iPhone XS Max

Quick answer

The iPhone XS Max is 1.05 millimetres0.04 inches thinner and 41 grams1.45 ounces lighter than the iPhone 18 Pro Max.

The iPhone 18 Pro Max on Amazon (paid link) arrived just weeks ago, offering years of software support and battery life that simply outlasts the older model. The XS Max (paid link) is stuck on its final version and carries a renewed price tag, yet it cannot keep up with current demands. Pick the newer device for endurance and protection; the older one is a budget compromise for cash-constrained buyers.

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Easier one-handediPhone XS Max

PocketiPhone XS Max

Weight differenceNoticeable

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HeightWidthDepthWeight18 Pro Max163.4 millimetres6.43 inches78.0 millimetres3.07 inches8.75 millimetres0.34 inches249 grams8.78 ouncesXS Max157.5 millimetres, 5.9 millimetres less6.20 inches, 0.23 inches less77.4 millimetres, 0.6 millimetres less3.05 inches, 0.02 inches less7.70 millimetres, 1.05 millimetres less0.30 inches, 0.04 inches less208 grams, 41 grams less7.34 ounces, 1.45 ounces less

Height: 18 Pro Max 163.4 millimetres, XS Max 157.5 millimetres.Height: 18 Pro Max 6.43 inches, XS Max 6.20 inches.Width: 18 Pro Max 78.0 millimetres, XS Max 77.4 millimetres.Width: 18 Pro Max 3.07 inches, XS Max 3.05 inches.Depth: 18 Pro Max 8.75 millimetres, XS Max 7.70 millimetres.Depth: 18 Pro Max 0.34 inches, XS Max 0.30 inches.Weight: 18 Pro Max 249 grams, XS Max 208 grams.Weight: 18 Pro Max 8.78 ounces, XS Max 7.34 ounces.

Specifications

Specifications for iPhone 18 Pro Max, iPhone XS Max. Differences are given against iPhone 18 Pro Max.
Specification18 Pro MaxXS Max
Height163.4 millimetres6.43 inches157.5 millimetres, 5.9 millimetres less6.20 inches, 0.23 inches less
Width78.0 millimetres3.07 inches77.4 millimetres, 0.6 millimetres less3.05 inches, 0.02 inches less
Depth8.75 millimetres0.34 inches7.70 millimetres, 1.05 millimetres less0.30 inches, 0.04 inches less
Weight249 grams8.78 ounces208 grams, 41 grams less7.34 ounces, 1.45 ounces less
Volume111.5 cubic centimetres6.81 cubic inches93.9 cubic centimetres, 17.7 cubic centimetres less5.73 cubic inches, 1.08 cubic inches less
Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure.91 percent84 percent, 6 percent less
Display size — Screen size is always quoted in inches.6.9 inches6.5 inches, 0.4 inches less
Resolution1320 × 28681242 × 2688
Pixel density460 pixels per inch458 pixels per inch, 2 pixels per inch less
CutoutDynamic IslandNotch
Rear main48MP Fusion, variable aperture f/1.48-f/4.012MP
Rear ultra-wide48MP Fusion f/2.2—
Rear telephoto48MP Fusion 100mm (4x optical, 8x optical-quality)—
Front camera18MP Center Stage f/1.912MP
ChipA20 ProA12 Bionic
Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity.45 hrs15 hrs
PortUSB-CLightning
Wireless5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi 6 · Bluetooth 5.0
Water resistanceIP68 (6m for 30 min)IP67 (1m for 30 min)
Storage256 GB – 2 TB64 – 512 GB
Launch price — Base configuration at launch, in US dollars.1,299 dollars1,099 dollars, 200 dollars less
ReleasedSep 2026Sep 2018
StatusCurrentLegacy

Dimensions

The iPhone XS Max is 5.9 mm (0.23 in) shorter, 0.6 mm (0.02 in) narrower, 1.05 mm (0.04 in) thinner and 41 g (1.45 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 XS Max measures 157.5 × 77.4 × 7.70 mm (6.20 × 3.05 × 0.30 in) and weighs 208 g (7.34 oz).

Also compared with iPhone 18 Pro Max

Questions about these phones

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

The iPhone 18 Pro Max is 5.9 mm taller and 0.6 mm wider than the iPhone XS Max. It is also 1.05 mm deeper.

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

The iPhone 18 Pro Max weighs 249 g and the iPhone XS Max weighs 208 g. The 41 g weight difference is noticeable.

What is the screen size difference between these phones?

The iPhone 18 Pro Max has a 6.9 inch screen while the iPhone XS Max has a 6.5 inch screen. This gives the newer model a slightly larger viewing area.

Which phone is easier to use one-handed?

The iPhone XS Max is easier to use one-handed and better for small hands. The iPhone 18 Pro Max is larger for single-hand use.

Do these phones fit in a typical men's jeans pocket?

Both phones fit in a typical men's jeans pocket but neither fits in a typical women's jeans pocket.

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

Upgrading to the iPhone 18 Pro Max for size alone depends on your needs. The iPhone XS Max is more pocketable and lighter than the iPhone 18 Pro Max.