An initial analysis of the Apple-designed A9 system-on-a-chip powering the new iPhone 6s and iPhone 6s Plus, conducted by semiconductor experts over at Chipworks, has identified both Samsung and rival Taiwan Semiconductor Manufacturing Company as manufacturers of the package.
What's really interesting is that the A9 comes in two sizes, depending on who manufactured it, with the Samsung-built units being a bit smaller than those manufactured by TSMC. This is the first time an Apple-designed processor for an iPhone came in two different sizes.