As a main carrier and entry of the mobility information services

mobile phone has become the key component of the enterprise secure information system. In order to enhance the security of the popular mobile operating system

the key security techniques and mechanism of mobile operating system and security modules were researched. Based on the deep understanding of the system security mechanism

the article introduces a dual-persona security system solution based on SE Android. By thorough descriptions on key techniques of the solution

including the system security architect

security access control and the application isolation

the article demonstrated the feasibility and practical value of the solution.