The 5G network technology is a revolution and involves the goodness of communication, processing power, storage management and Machine Learning (ML). Such technology is useful in various next generation applications by scaling the computational and communication ability. Therefore, it is very useful in smart city infrastructure, automated and precise farming. In this paper, we provide an insight on 5G networks and their applications. Afterwards, a review on recent development and contributions based on ML technology and communication networks has been carried out. The review categorizes contributions based on the research trend and algorithms utilized in application development. Additionally, objectives have been formulated to provide roadmap of future research work. Finally, the conclusion of the entire work involves in this paper and our findings are reported.