iPhone 8 vs iPhone 18 Pro Max
Quick answer
The iPhone 18 Pro Max is 10.7 millimetres0.42 inches wider and 101 grams3.56 ounces heavier than the iPhone 8.
The iPhone 8 on Amazon (paid link) is stuck on its final software version, making it a risky pick for longevity, whereas the iPhone 18 Pro Max (paid link) ships with the latest OS and delivers massive battery life. You can buy the old one renewed for a little over a hundred dollars, but the new flagship costs $1299 and dominates the experience.
Paid link.
Easier one-handed: iPhone 8
Pocket: iPhone 8
Weight difference: Noticeable
iPhone 8
from $699 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 8: 138.4 by 67.3 by 7.3 millimetres, 148 grams. iPhone 18 Pro Max: 163.4 by 78 by 8.75 millimetres, 249 grams.
8, 18 Pro Max shown at 2.1 pixels per millimetre.
iPhone 8
from $699 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: 8 138.4 millimetres, 18 Pro Max 163.4 millimetres.Height: 8 5.45 inches, 18 Pro Max 6.43 inches.Width: 8 67.3 millimetres, 18 Pro Max 78.0 millimetres.Width: 8 2.65 inches, 18 Pro Max 3.07 inches.Depth: 8 7.30 millimetres, 18 Pro Max 8.75 millimetres.Depth: 8 0.29 inches, 18 Pro Max 0.34 inches.Weight: 8 148 grams, 18 Pro Max 249 grams.Weight: 8 5.22 ounces, 18 Pro Max 8.78 ounces.
Specifications
| Specification | 8 | 18 Pro Max |
|---|---|---|
| Height | 138.4 millimetres5.45 inches | 163.4 millimetres, 25.0 millimetres more6.43 inches, 0.98 inches more |
| Width | 67.3 millimetres2.65 inches | 78.0 millimetres, 10.7 millimetres more3.07 inches, 0.42 inches more |
| Depth | 7.30 millimetres0.29 inches | 8.75 millimetres, 1.45 millimetres more0.34 inches, 0.06 inches more |
| Weight | 148 grams5.22 ounces | 249 grams, 101 grams more8.78 ounces, 3.56 ounces more |
| Volume | 68.0 cubic centimetres4.15 cubic inches | 111.5 cubic centimetres, 43.5 cubic centimetres more6.81 cubic inches, 2.66 cubic inches more |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 65 percent | 91 percent, 25 percent more |
| Display size — Screen size is always quoted in inches. | 4.7 inches | 6.9 inches, 2.2 inches more |
| Resolution | 750 × 1334 | 1320 × 2868 |
| Pixel density | 326 pixels per inch | 460 pixels per inch, 134 pixels per inch more |
| Cutout | None | Dynamic Island |
| Rear main | 12MP | 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 | 7MP | 18MP Center Stage f/1.9 |
| Chip | A11 Bionic | A20 Pro |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 13 hrs | 45 hrs |
| Port | Lightning | USB-C |
| Wireless | 4G LTE · Wi-Fi · Bluetooth | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem |
| Water resistance | IP67 (1m for 30 min) | IP68 (6m for 30 min) |
| Storage | 64 – 256 GB | 256 GB – 2 TB |
| Launch price — Base configuration at launch, in US dollars. | 699 dollars | 1,299 dollars, 600 dollars more |
| Released | Sep 2017 | Sep 2026 |
| Status | Legacy | Current |
Dimensions
The iPhone 18 Pro Max is 25.0 mm (0.98 in) taller, 10.7 mm (0.42 in) wider, 1.45 mm (0.06 in) thicker and 101 g (3.56 oz) heavier than the iPhone 8. The iPhone 8 measures 138.4 × 67.3 × 7.30 mm (5.45 × 2.65 × 0.29 in) and weighs 148 g (5.22 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 8
Questions about these phones
How much bigger is the iPhone 18 Pro Max than the iPhone 8?
The iPhone 18 Pro Max is 25 mm taller and 10.7 mm wider than the iPhone 8. It is also 1.45 mm deeper and weighs 101 g more.
What is the screen size difference between the iPhone 8 and iPhone 18 Pro Max?
The iPhone 18 Pro Max has a 6.9 inch display while the iPhone 8 has a 4.7 inch display. This is a difference of 2.2 inches.
Which phone is easier to use with one hand?
The iPhone 8 is easier to use with one hand compared to the iPhone 18 Pro Max. The iPhone 18 Pro Max is larger and heavier for an average adult hand.
Which phone fits better in a jeans pocket?
The iPhone 8 is considered more pocketable than the iPhone 18 Pro Max. Both fit a typical men's jeans pocket but the iPhone 18 Pro Max is bulkier and heavier.
How much heavier is the iPhone 18 Pro Max?
The iPhone 18 Pro Max weighs 249 g while the iPhone 8 weighs 148 g. The difference of 101 g is noticeable when holding them.
Is the size increase worth it for an upgrade?
Whether the size increase is worth it depends on your preference for screen space versus portability. The iPhone 18 Pro Max offers a much larger display but is significantly bigger overall.