Many years ago, mobile phone software systems were still one-third of the world, Apple's IOS, Google's Android and Microsoft's Windows phone. Under the huge offensive of IOS and Android, windows phone quickly disappeared and disappeared in the long river of history. The current smart phone operating system is the world of IOS and Android. The two are completely different ecology, one is closed and the other is open. These are two completely different business logics, but both have achieved great success.
