iPhone SE is like old wine in a new bottle, it uses body shell of iPhone 5s, but SoC of iPhone 6s. It is equipped with A9 chip with integrated M9, and a 12M iSight Camera. It goes back to 4-inch when larger display is popular. It also supports Touch ID and Apple Pay, but no 3D Touch. Since most ingerdients remain the same with other Apple products, Apple lower the cost, then iPhone SE got the lowest price from $399. This price is considered to be a way to fight against Android smart phones.