iPhone 18 Pro Max vs iPhone 15 Pro Max
Quick answer
The iPhone 15 Pro Max is the same size as the iPhone 18 Pro Max, 28 grams0.99 ounces lighter.
The iPhone 15 Pro Max on Amazon (paid link) is lighter and easier to manage, but the iPhone 18 Pro Max (paid link) delivers all-day battery life with the newest chip. Apple sells the 18 Pro Max for $1,299 now, while the 15 Pro Max is available renewed for much less. Keep the 15 if you value comfort, or switch to the 18 if battery matters most.
Paid link.
Easier one-handed: iPhone 15 Pro Max
Pocket: iPhone 15 Pro Max
Weight difference: Noticeable
iPhone 18 Pro Max
from $1,299 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 15 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (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 18 Pro Max: 163.4 by 78 by 8.75 millimetres, 249 grams. iPhone 15 Pro Max: 159.9 by 76.7 by 8.25 millimetres, 221 grams.
18 Pro Max, 15 Pro Max shown at 2.1 pixels per millimetre.
iPhone 18 Pro Max
from $1,299 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 15 Pro Max
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (paid link)
Paid link.
Height: 18 Pro Max 163.4 millimetres, 15 Pro Max 159.9 millimetres.Height: 18 Pro Max 6.43 inches, 15 Pro Max 6.30 inches.Width: 18 Pro Max 78.0 millimetres, 15 Pro Max 76.7 millimetres.Width: 18 Pro Max 3.07 inches, 15 Pro Max 3.02 inches.Depth: 18 Pro Max 8.75 millimetres, 15 Pro Max 8.25 millimetres.Depth: 18 Pro Max 0.34 inches, 15 Pro Max 0.32 inches.Weight: 18 Pro Max 249 grams, 15 Pro Max 221 grams.Weight: 18 Pro Max 8.78 ounces, 15 Pro Max 7.80 ounces.
Specifications
| Specification | 18 Pro Max | 15 Pro Max |
|---|---|---|
| Height | 163.4 millimetres6.43 inches | 159.9 millimetres, 3.5 millimetres less6.30 inches, 0.14 inches less |
| Width | 78.0 millimetres3.07 inches | 76.7 millimetres, 1.3 millimetres less3.02 inches, 0.05 inches less |
| Depth | 8.75 millimetres0.34 inches | 8.25 millimetres, 0.50 millimetres less0.32 inches, 0.02 inches less |
| Weight | 249 grams8.78 ounces | 221 grams, 28 grams less7.80 ounces, 0.99 ounces less |
| Volume | 111.5 cubic centimetres6.81 cubic inches | 101.2 cubic centimetres, 10.3 cubic centimetres less6.17 cubic inches, 0.63 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 91 percent | 90 percent, 1 percent less |
| Display size — Screen size is always quoted in inches. | 6.9 inches | 6.7 inches, 0.2 inches less |
| Resolution | 1320 × 2868 | 1290 × 2796 |
| Pixel density | 460 pixels per inch | 460 pixels per inch, the same |
| Cutout | Dynamic Island | Dynamic Island |
| Rear main | 48MP Fusion, variable aperture f/1.48-f/4.0 | 48MP |
| Rear ultra-wide | 48MP Fusion f/2.2 | — |
| Rear telephoto | 48MP Fusion 100mm (4x optical, 8x optical-quality) | — |
| Front camera | 18MP Center Stage f/1.9 | 12MP |
| Chip | A20 Pro | A17 Pro |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 45 hrs | 29 hrs |
| Port | USB-C | USB-C |
| Wireless | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem | 5G · Wi-Fi · Bluetooth |
| Water resistance | IP68 (6m for 30 min) | IP68 (6m for 30 min) |
| Storage | 256 GB – 2 TB | 256 GB – 1 TB |
| Launch price — Base configuration at launch, in US dollars. | 1,299 dollars | 1,199 dollars, 100 dollars less |
| Released | Sep 2026 | Sep 2023 |
| Status | Current | Discontinued |
Dimensions
The iPhone 15 Pro Max is 3.5 mm (0.14 in) shorter, 1.3 mm (0.05 in) narrower, 0.50 mm (0.02 in) thinner and 28 g (0.99 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 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).
Also compared with iPhone 18 Pro Max
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- iPhone 18 Pro Max vs iPhone 16 Plus
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- iPhone 18 Pro Max vs iPhone 17 Pro
- iPhone 18 Pro Max vs iPhone 16 Pro
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, 1.3 mm wider, and 28 grams heavier than the iPhone 15 Pro Max.
What is the screen size difference between the iPhone 18 Pro Max and iPhone 15 Pro Max?
The iPhone 18 Pro Max has a 6.9 inch display, which is 0.2 inches larger than the 6.7 inch screen on the iPhone 15 Pro Max.
Which phone is easier to use with one hand?
The iPhone 15 Pro Max is easier to use with one hand because it is shorter and lighter than the iPhone 18 Pro Max.
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, though the iPhone 15 Pro Max is more pocketable due to its smaller dimensions.
Is the weight difference between the iPhone 18 Pro Max and iPhone 15 Pro Max noticeable?
Yes, the iPhone 18 Pro Max is 28 grams heavier than the iPhone 15 Pro Max, which is a noticeable difference in hand.
Is upgrading from the iPhone 15 Pro Max to the iPhone 18 Pro Max worth it for size only?
It depends on your preference, as the iPhone 18 Pro Max offers a slightly larger screen but is bigger and heavier than the iPhone 15 Pro Max.