Why does Android phone have three buttons and Apple only has one?

First, Apple's mobile phone has only one HOME button, while most Android phones have three, mainly because Apple's mobile phone has applied for a single button patent.

Second, Apple's mobile phone only uses one button design, which is mainly inspired by the designer's design of the toilet; Press a button to clean;

Thirdly, Android phones are mostly designed with three keys or even multiple keys, because the open source characteristics of Android system make it more complicated or more difficult to unify the functions and some interactions compared with iOS at the beginning of design; The long press and click control of iPhone HOME button is based on the compromise of all software.

Fourth, the multi-button design will make the Android system more advantageous than Apple in terms of system usability, and it can also be regarded as one of the chips for the Android system to fight against iOS in the initial market share.