iPhone 17 vs iPhone 18 Pro

149.6 mm150.0 mm71.5 mm71.9 mm

iPhone 17: 149.6 × 71.5 × 7.95 mm · 177 g
iPhone 18 Pro: 150 × 71.9 × 8.75 mm · 211 g

Source: Apple technical specifications for iPhone 17 and iPhone 18 Pro. Body dimensions exclude the camera bump; foldable phones are shown folded.