iPhone Duo vs iPhone 17

117.8 mm149.6 mm84.1 mm71.5 mm

iPhone Duo: 117.8 × 84.1 × 11.3 mm · 254 g
iPhone 17: 149.6 × 71.5 × 7.95 mm · 177 g

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