4G network is the highly advanced wireless network which aids broadband as well as multimedia applications. LTE is mainly influenced by high data rates, minimum delay and the capacity due to scalable bandwidth and its flexibility. With the rapid and widespread use LTE networks, and increase the use in data/video transmission and Internet applications in general, accordingly, the challenges of securing and speeding up data communication in such networks is also increased. A number of approaches are used for the privacy and secure data transmission in 4G network. It also includes various algorithm and methods.