This paper presents a brief study of recent advances in wireless network security issues. The paper makes a number of contributions to the wireless networking field. First, it studies the 4G mail threats and risk and
their design decisions. Second, the security of 4G architecture with next generation network security and 8- security dimensions of 4G network. Third, security issues and possible threats on 4G are discussed. Finally, we proposed four layer security model which manages to ensure more secure packets transmission by taking all the necessary security measures.