The mobile industry is ushering in the 5G communications era. New standards are being finalised, testbeds are proving technology worldwide and the first commercial services have recently been launched. 5G will enhance consumer mobile services and enable a plethora of new use cases to serve a broad range of sectors from healthcare to education and from manufacturing to transportation. This whitepaper presents a clear-eyed view of the 5G market, explains why 5G will be a network of networks, and examines how spaced-based communications systems will be critical components of mobile network operators’ 5G strategies.