5G simply means 5th generation of wireless communications technologies which supports cellular and data networks. Like it’s predecessor 4G it consist of various technologies out of which one was commercially adopted LTE ( long term evolution) which provide 10x the capabilities

Of 3G networks. Like all communications technology 5G is divided into spectrums ( frequency ranges) , millimeter waves , mid band and low band it is worthy to point out that these spectrums are identical to that of 4G.

Millimeter waves are the fastest as they can achieve a speed of about 1Gps maximum 2Gps, however they operate at large frequencies around 24Ghz to 72Ghz..

These frequencies are way too high, they have short reach, very weak indoors as thier wave length is very small. Hence not ideal for commercial usage as the overhead of propagating the signals are too high.

5G Mid bands are the most widely developed as they operate on the acceptable frequencies other predecessors 3G,4G. It operates from as low as 100mhz but it is pitched to operate between 2.4 GHz to 4.2Ghz. A home wireless router operates at 2.4GHz or 5Ghz respectively.

5G low bands provide speeds the same as 4G networks or sometimes lower. They are between the range of 850mhz to 1Ghz. Which are just slightly higher than microwaves ( same you use for heating up foods)

In a nutshell. The conspiracy that 5G Lowers the immune system is total false. If we are to go by that. We all should have no white blood cells left. Because right now you sit in the middle of a wave operating at 2.4Ghz .