iPhone X vs iPhone 18 Pro
Quick answer
The iPhone 18 Pro is 1.05 millimetres0.04 inches thicker and 37 grams1.31 ounces heavier than the iPhone X.
The iPhone X on Amazon (paid link) is stuck on its last version, so you're buying a dead-end device. The 18 Pro (paid link) costs more but delivers vastly longer battery life and immediate access to the newest features. This is the year to move.
Paid link.
Easier one-handed: iPhone X
Pocket: Same
Weight difference: Noticeable
iPhone X
from $999 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 X: 143.6 by 70.9 by 7.7 millimetres, 174 grams. iPhone 18 Pro: 150 by 71.9 by 8.75 millimetres, 211 grams.
X, 18 Pro shown at 2.2 pixels per millimetre.
iPhone X
from $999 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: X 143.6 millimetres, 18 Pro 150.0 millimetres.Height: X 5.65 inches, 18 Pro 5.91 inches.Width: X 70.9 millimetres, 18 Pro 71.9 millimetres.Width: X 2.79 inches, 18 Pro 2.83 inches.Depth: X 7.70 millimetres, 18 Pro 8.75 millimetres.Depth: X 0.30 inches, 18 Pro 0.34 inches.Weight: X 174 grams, 18 Pro 211 grams.Weight: X 6.14 ounces, 18 Pro 7.44 ounces.
Specifications
| Specification | X | 18 Pro |
|---|---|---|
| Height | 143.6 millimetres5.65 inches | 150.0 millimetres, 6.4 millimetres more5.91 inches, 0.25 inches more |
| Width | 70.9 millimetres2.79 inches | 71.9 millimetres, 1.0 millimetres more2.83 inches, 0.04 inches more |
| Depth | 7.70 millimetres0.30 inches | 8.75 millimetres, 1.05 millimetres more0.34 inches, 0.04 inches more |
| Weight | 174 grams6.14 ounces | 211 grams, 37 grams more7.44 ounces, 1.31 ounces more |
| Volume | 78.4 cubic centimetres4.78 cubic inches | 94.4 cubic centimetres, 16.0 cubic centimetres more5.76 cubic inches, 0.97 cubic inches more |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 83 percent | 89 percent, 7 percent more |
| Display size — Screen size is always quoted in inches. | 5.8 inches | 6.3 inches, 0.5 inches more |
| Resolution | 1125 × 2436 | 1206 × 2622 |
| Pixel density | 458 pixels per inch | 460 pixels per inch, 2 pixels per inch more |
| Cutout | Notch | 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. | 999 dollars | 1,199 dollars, 200 dollars more |
| Released | Nov 2017 | Sep 2026 |
| Status | Legacy | Current |
Dimensions
The iPhone 18 Pro is 6.4 mm (0.25 in) taller, 1.0 mm (0.04 in) wider, 1.05 mm (0.04 in) thicker and 37 g (1.31 oz) heavier than the iPhone X. The iPhone X measures 143.6 × 70.9 × 7.70 mm (5.65 × 2.79 × 0.30 in) and weighs 174 g (6.14 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 X
Questions about these phones
How much bigger is the iPhone 18 Pro than the iPhone X?
The iPhone 18 Pro is 6.4 mm taller and 1.0 mm wider than the iPhone X. It is also 1.05 mm deeper.
What is the screen size difference between the iPhone X and iPhone 18 Pro?
The iPhone 18 Pro has a 6.3 inch display while the iPhone X has a 5.8 inch display. The larger screen provides more viewing area on the newer model.
Which phone is better for one handed use?
The iPhone X is easier to use with one hand compared to the iPhone 18 Pro. Its smaller dimensions make it more manageable for single-handed typing.
Do these phones fit in jeans pockets?
Both the iPhone X and iPhone 18 Pro fit in a typical men's jeans pocket. Neither phone fits comfortably in a typical women's jeans pocket.
Is the weight difference between the phones noticeable?
The iPhone 18 Pro weighs 211 grams while the iPhone X weighs 174 grams. This weight difference is noticeable when holding the phones.
Is upgrading from iPhone X to iPhone 18 Pro worth it for size only?
Upgrading for size alone is not worth it if you prefer the smaller form factor of the iPhone X. The size difference does not justify the cost for everyone.