iPhone 6s PLUS: A 5.5-inch Retina HD display with 3D Touch. 7000 series aluminum and stronger cover glass. An A9 chip with 64-bit desktop-class architecture. All new 12MP iSight camera with Live Photos. Touch ID. Faster LTE and Wi-Fi. Long battery life and iOS 10 and iCloud. All in a smooth, continuous unibody design.