Ch.10 - Product Concepts

There are some product modification for IPhone 7 compared to IPhone generation before 7, both style modification and quality modification have been made:
CPU (proccessor) has been changed from Dual-core 1.84 GHz Twister on IPhone 6s to Quad-core 2.34 GHz, battery life has been changed to 2 more hours on IPhone 7, and the home button on IPhone 7 is equipped with Taptic engine, which means better experience (more smooth). Overall Apple is evolving rather than degrading