iPhone Duo vs iPhone 16

117.8 mm147.6 mm84.1 mm71.6 mm

iPhone Duo: 117.8 × 84.1 × 11.3 mm · 254 g
iPhone 16: 147.6 × 71.6 × 7.8 mm · 170 g

Source: Apple technical specifications for iPhone Duo and iPhone 16. Body dimensions exclude the camera bump; foldable phones are shown folded.