The era of mobile communication has changed the way people live and rapidly increased the number of connected devices. The world has benefited from many services and applications enabling connectivity. Many technologies will emerge in the future, and new features must be implemented that current mobile communication will be unable to handle. 5G is a promising mobile communication that enables these services and applications and contributes to people’s lives by providing many services in different domains. This research aims to investigate 5G from several perspectives. A systematic literature review defines the types of 5G technologies and their capabilities, outlines 5G business models and applications, determines the main dangers posed by 5G, and introduces the 5G market shares. Technologies currently emerging are meeting many challenges in their implementation, and this study identifies those facing the implementation of 5G, such as network, security, and other challenges, to lay a foundation for academia and industry.