5G will be defined by international standards bodies by 2020 and promises improved speeds of 20 times faster than 4G, lower latency, and higher spectral efficiency. 5G aims to support new services and business models through enhanced mobile broadband, massive IoT, and ultra-reliable low latency communications. Challenges to 5G deployment in developing countries include lack of spectrum, small cell infrastructure, backhaul connectivity, compatible devices, and regulatory frameworks. South African mobile operators are conducting 5G trials while regulators work on policies to facilitate a competitive 5G rollout.