A promising future is coming. Since 2009, the smartphone sales in Taiwan has grown rapidly. As a huge market, the demand of smart phones in Taiwan has increased gradually, and the sales of smartphones are expected to be even higher in the coming years. Thanks to the prosperity of smartphone market, some related mobile softwares (i.e. applications) like online TV, mobile messenger (such as LINE and whatsapp), mobile web mapping service and mobile reading are developed dramatically. The commonality of these industries was due to the coverage of 3G network in Taiwan. The thesis focuses on the discussion of the current states and future trend of leading companies in smartphone market such as HTC, SAMSUNG and APPLE.