Theory has it that 5G can offer 1000 x times the speed of 4G. In essence, with good coverage, you can stream 4 K videos on your phone, or have a bandwidth of 100 Gb per second. BUT.........
5G will massively increase exposure to radio frequency (RF) radiation on top of the 2G, 3G and 4G networks for telecommunications already in place. RF radiation has been proven harmful for humans and the environment. The deployment of 5G constitutes an experiment on humanity and the environment that is defined as a crime under international law.
Personally, I don't need 5G and consider our health and environment of much more importance.