iPhone's design, as in its software design, largely should be credited to the teams under Forstall. Ive, at that point, was responsible for hardware design most

iPhone's design, as in its software design, largely should be credited to the teams under Forstall. Ive, at that point, was responsible for hardware design mostly. Most of the principles that made iOS (iPhone OS) successful back then remain today—in fact, it is amazing how little has changed and how relevant the design still is.