iPhone 18 Pro vs iPhone 8
Quick answer
The iPhone 8 is 11.6 millimetres0.46 inches shorter and 63 grams2.22 ounces lighter than the iPhone 18 Pro.
The iPhone 8 on Amazon (paid link) is stuck on iOS 16 with no updates coming, while the iPhone 18 Pro (paid link) arrives fresh with years of support ahead. You will feel the battery difference immediately, and the modern device offers capabilities the old one simply cannot match. Apple sells the new model for $1199, but renewed units of the eight are under $120.
Paid link.
Easier one-handed: iPhone 8
Pocket: iPhone 8
Weight difference: Noticeable
iPhone 18 Pro
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 8
from $699 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (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 18 Pro: 150 by 71.9 by 8.75 millimetres, 211 grams. iPhone 8: 138.4 by 67.3 by 7.3 millimetres, 148 grams.
18 Pro, 8 shown at 2.2 pixels per millimetre.
iPhone 18 Pro
from $1,199 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 8
from $699 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (paid link)
Paid link.
Height: 18 Pro 150.0 millimetres, 8 138.4 millimetres.Height: 18 Pro 5.91 inches, 8 5.45 inches.Width: 18 Pro 71.9 millimetres, 8 67.3 millimetres.Width: 18 Pro 2.83 inches, 8 2.65 inches.Depth: 18 Pro 8.75 millimetres, 8 7.30 millimetres.Depth: 18 Pro 0.34 inches, 8 0.29 inches.Weight: 18 Pro 211 grams, 8 148 grams.Weight: 18 Pro 7.44 ounces, 8 5.22 ounces.
Specifications
| Specification | 18 Pro | 8 |
|---|---|---|
| Height | 150.0 millimetres5.91 inches | 138.4 millimetres, 11.6 millimetres less5.45 inches, 0.46 inches less |
| Width | 71.9 millimetres2.83 inches | 67.3 millimetres, 4.6 millimetres less2.65 inches, 0.18 inches less |
| Depth | 8.75 millimetres0.34 inches | 7.30 millimetres, 1.45 millimetres less0.29 inches, 0.06 inches less |
| Weight | 211 grams7.44 ounces | 148 grams, 63 grams less5.22 ounces, 2.22 ounces less |
| Volume | 94.4 cubic centimetres5.76 cubic inches | 68.0 cubic centimetres, 26.4 cubic centimetres less4.15 cubic inches, 1.61 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 89 percent | 65 percent, 24 percent less |
| Display size — Screen size is always quoted in inches. | 6.3 inches | 4.7 inches, 1.6 inches less |
| Resolution | 1206 × 2622 | 750 × 1334 |
| Pixel density | 460 pixels per inch | 326 pixels per inch, 134 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. | 36 hrs | 13 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. | 1,199 dollars | 699 dollars, 500 dollars less |
| Released | Sep 2026 | Sep 2017 |
| Status | Current | Legacy |
Dimensions
The iPhone 8 is 11.6 mm (0.46 in) shorter, 4.6 mm (0.18 in) narrower, 1.45 mm (0.06 in) thinner and 63 g (2.22 oz) lighter than the iPhone 18 Pro. 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). 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).
Also compared with iPhone 18 Pro
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- iPhone 18 Pro vs iPhone 16 Plus
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- iPhone 18 Pro vs iPhone 17 Pro Max
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Questions about these phones
How much bigger 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. It also has a 6.3 inch screen compared to the iPhone 8's 4.7 inch display.
Is the iPhone 18 Pro heavier than the iPhone 8?
Yes, the iPhone 18 Pro weighs 211 grams while the iPhone 8 weighs 148 grams. The 63 gram difference is noticeable when holding the devices.
What is the screen size difference between the iPhone 18 Pro and iPhone 8?
The iPhone 18 Pro has a 6.3 inch display whereas the iPhone 8 has a 4.7 inch display. This gives the iPhone 18 Pro significantly more screen area for media and apps.
Which phone is easier to use with one hand?
The iPhone 8 is easier to use with one hand due to its smaller width and height. The iPhone 18 Pro is larger and may be harder to reach across with a single thumb.
Do these phones fit in a typical men's jeans pocket?
Both the iPhone 18 Pro and the iPhone 8 fit in a typical men's jeans pocket. The iPhone 8 is considered more pocketable overall due to its smaller dimensions.
Is upgrading from the iPhone 8 to the iPhone 18 Pro worth it for size?
It depends on your preference for screen size and handling. The iPhone 18 Pro offers a much larger screen but is significantly bigger and heavier than the iPhone 8.