The advent of services on the Internet has led to an increased demand for enhanced data rates and connectivity throughout the world. Mobile communication is a complex phenomenon which involves multiple entities working towards increasing the data rates and improving the performance of the cellular networks. Software-defined networking (SDN) is one such paradigm which focuses on decoupling of the data and control planes in order to enable the direct programmability of the network and its corresponding functionalities. The power of SDN is used to fuel the upcoming generation of 5G cellular networks. A detailed study is made with respect to the recent research that has been conducted on the use of SDN in 5G cellular networks. The details of the test beds that are currently available for experimenting with SDN and 5G technologies are mentioned, along with the organizations that are currently working on SDN for 5G. Furthermore, the development of 5G in the Indian scenario is also described.