The performance version of the iPhone 6 device, the iPhone 6s, released on September 19, 2015. The iPhone 6s offers an overall improvement over the original iPhone 6. For performance, you have better hardware along with the newest iOS version, iOS 9, which came with several new features, such as 3D Touch.|
Other improvements over previous models include upgraded cameras, a stronger aluminum body, and a more sensitive touchscreen. Apple also updated the Touch ID with this newest model. When it comes to the design, though, it is nearly identical. The iPhone 6s offers the same aesthetics of the previous model with better features.