Smartphones have become one important part of our lives, the phone apps also play more and more important roles. They can help us live through the boring time or help us connect to our close friends fat away from us or help us get information,etc.There are also some interesting interaction methods since the birth of smartphones. We can play with them while we interact with the smartphones. Here we summarize some of them.1. ShakeSince WeChat introduces the Shake method to find people which you don't know before, this interaction method becomes very popular. Many apps provide functions based on ...