A breakthrough design. iPhone 6s take everything that made the previous-generation iPhone great, and advance it to a new level. They’re made with 7000 Series aluminum, the strongest alloy we’ve ever used in an iPhone. They both feature Retina HD displays made from the strongest cover glass used on any smartphone in the world. And now they’re available in an elegant rose gold finish.   7000 Series aluminum. Stronger from the outside in. The iPhone 6s enclosure is made from the same grade of aluminum used in the aerospace industry. It’s created from a unique composition of elements that make it the strongest alloy we’ve ever used in an iPhone.   The world’s strongest smartphone glass. Now even stronger. The new glass on iPhone 6s is made using a special dual ion‑exchange process, which makes it stronger at a molecular level and the