Abstract：Rare earth elements are widely used in high-tech manufacturing, The realization of a variety of functions of smart phones
are relying on rare earth elements, Including the manufacture of electro-acoustic systems, imaging systems, monitoring and control devices and power supply units. At present, the smart phone is a combination of all the functions——communications，information, public opinion, entertainment and business. It is no longer just a simple communication tool, and almost become a digital life center. Rare earth elements and smart phones help each other, sharing the development of golden age.
2017, Vol. 24 
