iPhone 17 Pro Max vs iPhone 18 Pro Max
Quick answer
The iPhone 18 Pro Max is the same size as the iPhone 17 Pro Max, 16 grams0.56 ounces heavier.
The iPhone 18 Pro Max on Amazon (paid link) arrives just weeks after the 17 Pro Max (paid link) left the shelves, keeping the same massive frame while adding extra battery life and a fresher chip. If you already have the older model, the extra endurance and newer internals make it a sensible jump, but the added weight might take getting used to. Wait if your current phone still clears the day without a charge.
Paid link.
Easier one-handed: Same
Pocket: Same
Weight difference: Noticeable
iPhone 17 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 18 Pro Max
from $1,299 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
TRUE SCALE · 1.3 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 17 Pro Max: 163.4 by 78 by 8.75 millimetres, 233 grams. iPhone 18 Pro Max: 163.4 by 78 by 8.75 millimetres, 249 grams.
17 Pro Max, 18 Pro Max shown at 2.1 pixels per millimetre.
iPhone 17 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 18 Pro Max
from $1,299 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
Height: 17 Pro Max 163.4 millimetres, 18 Pro Max 163.4 millimetres.Height: 17 Pro Max 6.43 inches, 18 Pro Max 6.43 inches.Width: 17 Pro Max 78.0 millimetres, 18 Pro Max 78.0 millimetres.Width: 17 Pro Max 3.07 inches, 18 Pro Max 3.07 inches.Depth: 17 Pro Max 8.75 millimetres, 18 Pro Max 8.75 millimetres.Depth: 17 Pro Max 0.34 inches, 18 Pro Max 0.34 inches.Weight: 17 Pro Max 233 grams, 18 Pro Max 249 grams.Weight: 17 Pro Max 8.22 ounces, 18 Pro Max 8.78 ounces.
Specifications
| Specification | 17 Pro Max | 18 Pro Max |
|---|---|---|
| Height | 163.4 millimetres6.43 inches | 163.4 millimetres, the same6.43 inches, the same |
| Width | 78.0 millimetres3.07 inches | 78.0 millimetres, the same3.07 inches, the same |
| Depth | 8.75 millimetres0.34 inches | 8.75 millimetres, the same0.34 inches, the same |
| Weight | 233 grams8.22 ounces | 249 grams, 16 grams more8.78 ounces, 0.56 ounces more |
| Volume | 111.5 cubic centimetres6.81 cubic inches | 111.5 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 percent | 91 percent, the same |
| Display size — Screen size is always quoted in inches. | 6.9 inches | 6.9 inches, the same |
| Resolution | 1320 × 2868 | 1320 × 2868 |
| Pixel density | 460 pixels per inch | 460 pixels per inch, the same |
| Cutout | Dynamic Island | Dynamic Island |
| Rear main | 48MP | 48MP Fusion, variable aperture f/1.48-f/4.0 |
| Rear ultra-wide | — | 48MP Fusion f/2.2 |
| Rear telephoto | — | 48MP Fusion 100mm (4x optical, 8x optical-quality) |
| Front camera | 12MP | 18MP Center Stage f/1.9 |
| Chip | A19 Pro | A20 Pro |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 38 hrs | 45 hrs |
| Port | USB-C | USB-C |
| Wireless | 5G · Wi-Fi · Bluetooth | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem |
| Water resistance | IP68 (6m for 30 min) | IP68 (6m for 30 min) |
| Storage | 256 GB – 2 TB | 256 GB – 2 TB |
| Launch price — Base configuration at launch, in US dollars. | 1,199 dollars | 1,299 dollars, 100 dollars more |
| Released | Sep 2025 | Sep 2026 |
| Status | Discontinued | Current |
Dimensions
The iPhone 18 Pro Max is the same size as the iPhone 17 Pro Max, 16 g (0.56 oz) heavier. 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). 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).
Also compared with iPhone 17 Pro Max
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- iPhone 17 Pro Max vs iPhone 17 Pro
- iPhone 17 Pro Max vs iPhone 17 Air
- iPhone 17 Pro Max vs iPhone 17
- iPhone 17 Pro Max vs iPhone 17e
- iPhone 17 Pro Max vs iPhone 15 Pro Max
- iPhone 17 Pro Max vs iPhone Duo
- iPhone 17 Pro Max vs iPhone 18 Pro
- iPhone 17 Pro Max vs iPhone 16 Plus
- iPhone 17 Pro Max vs iPhone 16
- iPhone 17 Pro Max vs iPhone 16e
- iPhone 17 Pro Max vs iPhone 16 Pro
Questions about these phones
How do the physical dimensions compare?
The iPhone 18 Pro Max has the same height, width, and depth as the iPhone 17 Pro Max. Both models measure 163.4 mm tall, 78 mm wide, and 8.75 mm thick.
Is the iPhone 18 Pro Max heavier?
The iPhone 18 Pro Max weighs 16 grams more than the iPhone 17 Pro Max. This weight difference is noticeable.
Are the screens different sizes?
Both phones have identical 6.9-inch displays with the same resolution and pixel density. The screen size did not change between these two generations.
Is one phone easier to use with one hand?
Neither phone is easier to use one-handed than the other since they share the same dimensions. An average adult hand will experience similar handling with both models.
Will the iPhone 18 Pro Max fit in a pocket?
The iPhone 18 Pro Max fits in a typical men's jeans pocket but not a typical women's jeans pocket. This pocket fit is the same as the iPhone 17 Pro Max.
Is upgrading worth it for size alone?
Upgrading is not worth it if you only care about physical size since the bodies are identical. You may find the battery and chip improvements worthwhile depending on your needs.