iPhone 15 Pro Max vs iPhone 18 Pro Max
Quick answer
The iPhone 18 Pro Max is the same size as the iPhone 15 Pro Max, 28 grams0.99 ounces heavier.
The iPhone 18 Pro Max on Amazon (paid link) just arrived with battery life that goes far into the next day, but it comes in heavier and wider. The iPhone 15 Pro Max (paid link) is now available only as renewed stock, giving you a lighter feel for less cash while still on the current software. If endurance is your priority, pick the new flagship; if a lighter hand feels better, the older model still holds up.
Paid link.
Easier one-handed: iPhone 15 Pro Max
Pocket: iPhone 15 Pro Max
Weight difference: Noticeable
iPhone 15 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (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 15 Pro Max: 159.9 by 76.7 by 8.25 millimetres, 221 grams. iPhone 18 Pro Max: 163.4 by 78 by 8.75 millimetres, 249 grams.
15 Pro Max, 18 Pro Max shown at 2.1 pixels per millimetre.
iPhone 15 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (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: 15 Pro Max 159.9 millimetres, 18 Pro Max 163.4 millimetres.Height: 15 Pro Max 6.30 inches, 18 Pro Max 6.43 inches.Width: 15 Pro Max 76.7 millimetres, 18 Pro Max 78.0 millimetres.Width: 15 Pro Max 3.02 inches, 18 Pro Max 3.07 inches.Depth: 15 Pro Max 8.25 millimetres, 18 Pro Max 8.75 millimetres.Depth: 15 Pro Max 0.32 inches, 18 Pro Max 0.34 inches.Weight: 15 Pro Max 221 grams, 18 Pro Max 249 grams.Weight: 15 Pro Max 7.80 ounces, 18 Pro Max 8.78 ounces.
Specifications
| Specification | 15 Pro Max | 18 Pro Max |
|---|---|---|
| Height | 159.9 millimetres6.30 inches | 163.4 millimetres, 3.5 millimetres more6.43 inches, 0.14 inches more |
| Width | 76.7 millimetres3.02 inches | 78.0 millimetres, 1.3 millimetres more3.07 inches, 0.05 inches more |
| Depth | 8.25 millimetres0.32 inches | 8.75 millimetres, 0.50 millimetres more0.34 inches, 0.02 inches more |
| Weight | 221 grams7.80 ounces | 249 grams, 28 grams more8.78 ounces, 0.99 ounces more |
| Volume | 101.2 cubic centimetres6.17 cubic inches | 111.5 cubic centimetres, 10.3 cubic centimetres more6.81 cubic inches, 0.63 cubic inches more |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 90 percent | 91 percent, 1 percent more |
| Display size — Screen size is always quoted in inches. | 6.7 inches | 6.9 inches, 0.2 inches more |
| Resolution | 1290 × 2796 | 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 | A17 Pro | A20 Pro |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 29 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 – 1 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 2023 | Sep 2026 |
| Status | Discontinued | Current |
Dimensions
The iPhone 18 Pro Max is 3.5 mm (0.14 in) taller, 1.3 mm (0.05 in) wider, 0.50 mm (0.02 in) thicker and 28 g (0.99 oz) heavier than the iPhone 15 Pro Max. The iPhone 15 Pro Max measures 159.9 × 76.7 × 8.25 mm (6.30 × 3.02 × 0.32 in) and weighs 221 g (7.80 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).
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Questions about these phones
How much bigger is the iPhone 18 Pro Max than the iPhone 15 Pro Max?
The iPhone 18 Pro Max is 3.5 mm taller and 1.3 mm wider than the iPhone 15 Pro Max.
How much heavier is the iPhone 18 Pro Max compared to the iPhone 15 Pro Max?
The iPhone 18 Pro Max weighs 28 grams more than the iPhone 15 Pro Max.
What is the difference in screen size between the iPhone 15 Pro Max and iPhone 18 Pro Max?
The iPhone 18 Pro Max has a 6.9 inch display which is 0.2 inches larger than the iPhone 15 Pro Max.
Which phone is better for one handed use?
The iPhone 15 Pro Max is easier to use one handed than the iPhone 18 Pro Max.
Will either phone fit in a typical men's jeans pocket?
Both the iPhone 15 Pro Max and iPhone 18 Pro Max fit in a typical men's jeans pocket.
Is it worth upgrading from the iPhone 15 Pro Max to the iPhone 18 Pro Max?
The verdict says battery life outweighs the weight but it depends on if you want the size increase.