iPhone 18 Pro Max vs iPhone 8 Plus
Quick answer
The iPhone 8 Plus is 1.25 millimetres0.05 inches thinner and 47 grams1.66 ounces lighter than the iPhone 18 Pro Max.
The iPhone 8 Plus on Amazon (paid link) is already stuck on its final iOS version, so it won't receive future updates. The iPhone 18 Pro Max (paid link) offers much longer battery life and runs the newest software at a higher price. If your priority is support, the 8 Plus is effectively obsolete.
Paid link.
Easier one-handed: iPhone 8 Plus
Pocket: iPhone 8 Plus
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 8 Plus
from $799 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 8 Plus: 158.4 by 78.1 by 7.5 millimetres, 202 grams.
18 Pro Max, 8 Plus 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 8 Plus
from $799 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, 8 Plus 158.4 millimetres.Height: 18 Pro Max 6.43 inches, 8 Plus 6.24 inches.Width: 18 Pro Max 78.0 millimetres, 8 Plus 78.1 millimetres.Width: 18 Pro Max 3.07 inches, 8 Plus 3.07 inches.Depth: 18 Pro Max 8.75 millimetres, 8 Plus 7.50 millimetres.Depth: 18 Pro Max 0.34 inches, 8 Plus 0.30 inches.Weight: 18 Pro Max 249 grams, 8 Plus 202 grams.Weight: 18 Pro Max 8.78 ounces, 8 Plus 7.13 ounces.
Specifications
| Specification | 18 Pro Max | 8 Plus |
|---|---|---|
| Height | 163.4 millimetres6.43 inches | 158.4 millimetres, 5.0 millimetres less6.24 inches, 0.20 inches less |
| Width | 78.0 millimetres3.07 inches | 78.1 millimetres, 0.1 millimetres more3.07 inches, the same |
| Depth | 8.75 millimetres0.34 inches | 7.50 millimetres, 1.25 millimetres less0.30 inches, 0.05 inches less |
| Weight | 249 grams8.78 ounces | 202 grams, 47 grams less7.13 ounces, 1.66 ounces less |
| Volume | 111.5 cubic centimetres6.81 cubic inches | 92.8 cubic centimetres, 18.7 cubic centimetres less5.66 cubic inches, 1.14 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 91 percent | 67 percent, 23 percent less |
| Display size — Screen size is always quoted in inches. | 6.9 inches | 5.5 inches, 1.4 inches less |
| Resolution | 1320 × 2868 | 1080 × 1920 |
| Pixel density | 460 pixels per inch | 401 pixels per inch, 59 pixels per inch less |
| Cutout | Dynamic Island | None |
| Rear main | 48MP Fusion, variable aperture f/1.48-f/4.0 | 12MP |
| 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 | 7MP |
| Chip | A20 Pro | A11 Bionic |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 45 hrs | 14 hrs |
| Port | USB-C | Lightning |
| Wireless | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem | 4G LTE · Wi-Fi · Bluetooth |
| Water resistance | IP68 (6m for 30 min) | IP67 (1m for 30 min) |
| Storage | 256 GB – 2 TB | 64 – 256 GB |
| Launch price — Base configuration at launch, in US dollars. | 1,299 dollars | 799 dollars, 500 dollars less |
| Released | Sep 2026 | Sep 2017 |
| Status | Current | Legacy |
Dimensions
The iPhone 8 Plus is 5.0 mm (0.20 in) shorter, 0.1 mm wider, 1.25 mm (0.05 in) thinner and 47 g (1.66 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 8 Plus measures 158.4 × 78.1 × 7.50 mm (6.24 × 3.07 × 0.30 in) and weighs 202 g (7.13 oz).
Also compared with iPhone 18 Pro Max
- iPhone 18 Pro Max vs iPhone 17 Pro Max
- iPhone 18 Pro Max vs iPhone 18 Pro
- iPhone 18 Pro Max vs iPhone 16 Pro Max
- iPhone 18 Pro Max vs iPhone Duo
- iPhone 18 Pro Max vs iPhone 17 Air
- iPhone 18 Pro Max vs iPhone 17
- iPhone 18 Pro Max vs iPhone 17e
- iPhone 18 Pro Max vs iPhone 16 Plus
- iPhone 18 Pro Max vs iPhone 16
- iPhone 18 Pro Max vs iPhone 16e
- iPhone 18 Pro Max vs iPhone 17 Pro
- iPhone 18 Pro Max vs iPhone 16 Pro
Questions about these phones
How much taller is the iPhone 18 Pro Max than the iPhone 8 Plus?
The iPhone 18 Pro Max is 5 mm taller than the iPhone 8 Plus. The iPhone 8 Plus is 1.25 mm thinner than the iPhone 18 Pro Max.
Is the iPhone 18 Pro Max heavier than the iPhone 8 Plus?
The iPhone 18 Pro Max weighs 249 g while the iPhone 8 Plus weighs 202 g. The weight difference of 47 g is noticeable.
What is the screen size difference between these phones?
The iPhone 18 Pro Max has a 6.9 inch display compared to the 5.5 inch display on the iPhone 8 Plus.
Which phone is better for one-handed use?
The iPhone 8 Plus is easier to use one-handed than the iPhone 18 Pro Max. The iPhone 8 Plus is also better for small hands.
Do these phones fit in a typical men's jeans pocket?
Both phones fit in a typical men's jeans pocket but the iPhone 8 Plus is more pocketable. Neither phone fits in a typical women's jeans pocket.
Is the size upgrade from iPhone 8 Plus to iPhone 18 Pro Max worth it?
A size-only upgrade from the iPhone 8 Plus to the iPhone 18 Pro Max is not recommended. The iPhone 8 Plus remains more pocketable and lighter.