The iPhone 6S (stylized as iPhone 6s) is a smartphone designed by Apple Inc. The device is a part of the iPhone series and was announced along with the iPhone 6S Plus on September 9, 2015, at the Bill Graham Civic Auditorium in San Francisco by Apple Inc. CEO Tim Cook. The iPhone 6S and iPhone 6S Plus jointly serve as successors to the iPhone 6 and iPhone 6 Plus of 2014. More: