As we all know smartphone is becoming more and more essential part of our daily life.And almost people in the world have a smartphone because these benefits they bring. Firstly, a smartphone is used for communication. Using a smartphone will have more convenient than using a telephone and faster than writing a letter. We can instantly make a face time calls, send and receive messages and photos anywhere, anytime because it's easy to bring. Secondly, we can use a smartphone for our entertainment. We can listen to music, watch a films, or playing games, and the window shopping are some interesting functions. Besides that , we can also use it to take photos or record videos to save our happy moments. Finally, we can easily find the information that we need in a smartphone. Once it is connected to a wi-fi or used mobile data network, we can surf the web, research information or even use maps to look for places.