WRC-19 identified additional globally harmonized (millimetre wave) frequency bands for International Mobile Telecommunications (IMT), including IMT-2020 (otherwise known as 5G mobile).
Frequency bands 24.25-27.5 GHz, 37-43.5 GHz, 45.5-47 GHz, 47.2-48.2 and 66-71 GHz are allocated for the deployment of 5G networks.
In total, 17.25 GHz of spectrum has been identified for IMT by the Conference and 14.75 GHz of that spectrum has been harmonized worldwide.
Earlier 1.9 GHz of bandwidth was available before WRC-19.
Maybe we have now enough bandwidth to fullfill some of the 5G promises. Se still need to solve many technical issues and build network.