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The iPhone 17 Pro and iPhone 18 Pro share nearly identical dimensions — the practical difference comes down to weight, materials, or other specs rather than size. They match almost exactly in height, at 150.0 mm. They match almost exactly in width, at 71.9 mm. They match almost exactly in thickness, at 8.8 mm.
The iPhone 18 Pro is the heavier of the two at 211 g, compared with 206 g for the iPhone 17 Pro. That is a 5 g difference (2%). The gap is small enough that you would barely notice it day to day.
Fits in most pockets, may feel snug when sitting.
Most of the screen is reachable, shifting grip needed for corners.
Fits in most pockets, may feel snug when sitting.
Most of the screen is reachable, shifting grip needed for corners.
| Metric | iPhone 17 Pro | iPhone 18 Pro | Diff |
|---|---|---|---|
| Width | 71.9 mm | 71.9 mm | 0.0 mm |
| Height | 150.0 mm | 150.0 mm | 0.0 mm |
| Depth | 8.8 mm | 8.8 mm | 0.0 mm |
| Weight | 206 g | 211 g | -5 g |