New applications enabled or enhanced by 5G for drones in public safety, security, precision agriculture and mobile communications are being evaluated in various trials and testbeds around the world. The main points are that by including a specification for latency for the first time in a cellular standard and also enabling smooth handover between cells for fast moving clients, 5G will greatly extend the scope of drones along various dimensions. Drones strictly include all unattended vehicles including boats, self-driving cars and even missiles, but here we discuss just UAVs (unattended aerial vehicles) such as the familiar consumer quadcopters, because these have particular constraints which 5G can help overcome either directly or indirectly. The primary challenges then for UAVs are power…