iPhone 8 Plus vs iPhone 18 Pro
Quick answer
The iPhone 18 Pro is 6.2 millimetres0.24 inches narrower and 8.4 millimetres0.33 inches shorter than the iPhone 8 Plus.
The iPhone 8 Plus on Amazon (paid link) is stuck on its final update, while the iPhone 18 Pro (paid link) just launched and runs the latest software. It simply lasts much longer on a charge and you will feel the speed difference immediately. If you need a phone that stays supported, the 18 Pro is the only real choice.
Paid link.
Easier one-handed: iPhone 18 Pro
Pocket: Same
Weight difference: Not noticeable
iPhone 8 Plus
from $799 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 · 2.1 PX/MM
Hand: US Army ANSUR II, 2012 (sex-balanced median). Pockets: The Pudding, 2018. Card: ISO/IEC 7810 ID-1.
iPhone 8 Plus: 158.4 by 78.1 by 7.5 millimetres, 202 grams. iPhone 18 Pro: 150 by 71.9 by 8.75 millimetres, 211 grams.
8 Plus, 18 Pro shown at 2.1 pixels per millimetre.
iPhone 8 Plus
from $799 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 Plus 158.4 millimetres, 18 Pro 150.0 millimetres.Height: 8 Plus 6.24 inches, 18 Pro 5.91 inches.Width: 8 Plus 78.1 millimetres, 18 Pro 71.9 millimetres.Width: 8 Plus 3.07 inches, 18 Pro 2.83 inches.Depth: 8 Plus 7.50 millimetres, 18 Pro 8.75 millimetres.Depth: 8 Plus 0.30 inches, 18 Pro 0.34 inches.Weight: 8 Plus 202 grams, 18 Pro 211 grams.Weight: 8 Plus 7.13 ounces, 18 Pro 7.44 ounces.
Specifications
| Specification | 8 Plus | 18 Pro |
|---|---|---|
| Height | 158.4 millimetres6.24 inches | 150.0 millimetres, 8.4 millimetres less5.91 inches, 0.33 inches less |
| Width | 78.1 millimetres3.07 inches | 71.9 millimetres, 6.2 millimetres less2.83 inches, 0.24 inches less |
| Depth | 7.50 millimetres0.30 inches | 8.75 millimetres, 1.25 millimetres more0.34 inches, 0.05 inches more |
| Weight | 202 grams7.13 ounces | 211 grams, 9 grams more7.44 ounces, 0.32 ounces more |
| Volume | 92.8 cubic centimetres5.66 cubic inches | 94.4 cubic centimetres, 1.6 cubic centimetres more5.76 cubic inches, 0.10 cubic inches more |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 67 percent | 89 percent, 22 percent more |
| Display size — Screen size is always quoted in inches. | 5.5 inches | 6.3 inches, 0.8 inches more |
| Resolution | 1080 × 1920 | 1206 × 2622 |
| Pixel density | 401 pixels per inch | 460 pixels per inch, 59 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. | 14 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. | 799 dollars | 1,199 dollars, 400 dollars more |
| Released | Sep 2017 | Sep 2026 |
| Status | Legacy | Current |
Dimensions
The iPhone 18 Pro is 8.4 mm (0.33 in) shorter, 6.2 mm (0.24 in) narrower, 1.25 mm (0.05 in) thicker and 9 g (0.32 oz) heavier than the iPhone 8 Plus. 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). 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 Plus
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Questions about these phones
How do the sizes of the iPhone 8 Plus and iPhone 18 Pro compare?
The iPhone 18 Pro is 8.4 mm shorter and 6.2 mm narrower than the iPhone 8 Plus. This reduction in height and width makes the newer phone more compact overall.
Is the screen on the iPhone 18 Pro bigger than the iPhone 8 Plus?
The iPhone 18 Pro has a 6.3 inch display that is 0.8 inch larger than the iPhone 8 Plus screen. Even though the phone is smaller physically, you get more screen space.
Which phone is easier to use one-handed?
The iPhone 18 Pro is easier to use one-handed than the iPhone 8 Plus. Its narrower and shorter body fits average adult hands and smaller hands better.
Do both phones fit in a jeans pocket?
Both the iPhone 8 Plus and iPhone 18 Pro fit a typical men's jeans pocket but not a typical women's jeans pocket. The physical size change does not make one more pocketable than the other.
Is the iPhone 18 Pro heavier than the iPhone 8 Plus?
The iPhone 18 Pro weighs 9 grams more than the iPhone 8 Plus. This weight difference is not usually noticeable during daily use.
Is upgrading just for the size change worth it?
The iPhone 18 Pro offers a significantly smaller body with a larger screen compared to the iPhone 8 Plus. The improvements in size and display make it a worthwhile upgrade based on dimensions alone.