iPhone 17 vs iPhone 18 Pro Max

149.6 mm163.4 mm71.5 mm78.0 mm

iPhone 17: 149.6 × 71.5 × 7.95 mm · 177 g
iPhone 18 Pro Max: 163.4 × 78 × 8.75 mm · 249 g

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