iPhone 8 vs iPhone 18 Pro
Quick answer
The iPhone 18 Pro is 11.6 millimetres0.46 inches taller and 63 grams2.22 ounces heavier than the iPhone 8.
The iPhone 8 on Amazon (paid link) has stopped receiving iOS updates, whereas the iPhone 18 Pro (paid link) runs the latest system and keeps you going much longer between charges. You get a far larger display and vastly better performance, though the phone is noticeably bigger and heavier to hold. For a modern device that will last years, the 18 Pro is the only logical pick.
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
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
TRUE SCALE · 1.4 PX/MM
TRUE SCALE · 2.2 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: 150 by 71.9 by 8.75 millimetres, 211 grams.
8, 18 Pro shown at 2.2 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
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)
Paid link.
Height: 8 138.4 millimetres, 18 Pro 150.0 millimetres.Height: 8 5.45 inches, 18 Pro 5.91 inches.Width: 8 67.3 millimetres, 18 Pro 71.9 millimetres.Width: 8 2.65 inches, 18 Pro 2.83 inches.Depth: 8 7.30 millimetres, 18 Pro 8.75 millimetres.Depth: 8 0.29 inches, 18 Pro 0.34 inches.Weight: 8 148 grams, 18 Pro 211 grams.Weight: 8 5.22 ounces, 18 Pro 7.44 ounces.
Specifications
| Specification | 8 | 18 Pro |
|---|---|---|
| Height | 138.4 millimetres5.45 inches | 150.0 millimetres, 11.6 millimetres more5.91 inches, 0.46 inches more |
| Width | 67.3 millimetres2.65 inches | 71.9 millimetres, 4.6 millimetres more2.83 inches, 0.18 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 | 211 grams, 63 grams more7.44 ounces, 2.22 ounces more |
| Volume | 68.0 cubic centimetres4.15 cubic inches | 94.4 cubic centimetres, 26.4 cubic centimetres more5.76 cubic inches, 1.61 cubic inches more |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 65 percent | 89 percent, 24 percent more |
| Display size — Screen size is always quoted in inches. | 4.7 inches | 6.3 inches, 1.6 inches more |
| Resolution | 750 × 1334 | 1206 × 2622 |
| 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 | 36 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 | 1,199 dollars, 500 dollars more |
| Released | Sep 2017 | Sep 2026 |
| Status | Legacy | Current |
Dimensions
The iPhone 18 Pro is 11.6 mm (0.46 in) taller, 4.6 mm (0.18 in) wider, 1.45 mm (0.06 in) thicker and 63 g (2.22 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 measures 150.0 × 71.9 × 8.75 mm (5.91 × 2.83 × 0.34 in) and weighs 211 g (7.44 oz).
Also compared with iPhone 8
Questions about these phones
How much taller and wider is the iPhone 18 Pro than the iPhone 8?
The iPhone 18 Pro is 11.6 mm taller and 4.6 mm wider than the iPhone 8.
Is the iPhone 18 Pro heavier than the iPhone 8?
The iPhone 18 Pro weighs 211 grams, which is 63 grams heavier than the iPhone 8 at 148 grams.
What is the difference in screen size between the iPhone 8 and iPhone 18 Pro?
The iPhone 18 Pro has a 6.3 inch display, while the iPhone 8 has a 4.7 inch display.
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.
Do both phones fit in a typical men's jeans pocket?
Both phones fit in a typical men's jeans pocket, but the iPhone 8 is considered more pocketable.
Is it worth upgrading from the iPhone 8 to the iPhone 18 Pro based on size?
Whether the size upgrade is worth it depends on your preference for a larger device versus a smaller one.