Apple’s Mechanical and Silicon Rubicon: The Complete Engineering Dissection of iPhone 18 Pro and the iPhone Duo Foldable
A first-principles hardware breakdown of Apple's September 2026 announcements: the $1,999 iPhone Duo foldable, the TSMC 2nm A20 Pro GAAFET architecture, the 100-component liquidmetal hinge, and the iPhone 18 Pro variable aperture optics.