The shipments within the smartphone market decreased for first time in history during the 4^th quarter of 2017， yet the brand concentration was improved. Domestic brands in overseas market expansion have significant results. The application of full screens and artificial intelligence technology on smart phones has become a selling point. Although the application of intelligent handset AI technology is far from maturing， it has become an important focus of research and competition amongst the terminal manufacturers. In the future， with 5G's ultra-high speed support， the deep integration of AI technology and smart phones as well as the application of the internet of things will spawn a new business scenario for smart phones and increase points for inflection.