Decades of research has determined that exposure to cell phone and wireless "Wi-Fi" radiation – including 5G – as well as other sources of electromagnetic fields (aka "electrosmog") is biologically and environmentally harmful (see also 1, 2, 3).  In fact, some government agencies warn citizens about exposure risks.  Manufacturers are also supposed to provide warnings about exposure from their products.  Nevertheless, the promotion and deployment of devices and infrastructure that emit radiation continues to increase.  Additionally, there are proponents that still claim some of this technology will help the environment (utility "smart" meters, Internet of Things (IoT) technology, etc.).  Of course, there's A LOT of money being spent to promote this nonsense.  Fortunately, scientists continue to dispute it as well.