iPhone 12 vs iPhone 17

146.7 mm149.6 mm71.5 mm71.5 mm

iPhone 12: 146.7 × 71.5 × 7.4 mm · 164 g
iPhone 17: 149.6 × 71.5 × 7.95 mm · 177 g

Source: Apple technical specifications for iPhone 12 and iPhone 17. Body dimensions exclude the camera bump; foldable phones are shown folded.