What do you know about 5G? Do you know there is a difference between WIFI 5G and the soon to come millimeter-wave?There are more questions than answers, the focus of this book is to educate the general population of both the advantages and hazards of the "Invisible World of 5G" and the affect it may have on our physical and mental health. We are in not trying to alarm you or raise fear. Our simple intention is to make the reader aware of 5G frequencies and encourage further research on the subject.