iPhone Duo vs iPhone 18 Pro Max compared on video: 5.2mm vs 8.8mm

A side-by-side video compares Apple's iPhone Duo with the iPhone 18 Pro Max. The foldable Duo is thinner when unfolded at 5.2mm versus 8.8mm, but thicker when folded at 11.3mm, and weighs 254 grams, 5 grams more. Its unfolded display is dramatically larger.

• iPhone Duo is 5.2mm thin unfolded vs 8.8mm on iPhone 18 Pro Max
• Folded, the Duo is thicker at 11.3mm versus 8.8mm
• Weights are close: 254g for the Duo and 249g for the 18 Pro Max
• The Duo's unfolded screen fits the iPhone 18 Pro Max at about two thirds