Magnetic Fields
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3507158/ What do alpha waves do?
https://www.scientificamerican.com/article/mind-control-by-cell/
Not only could the cell phone signals alter a person's behavior during the call, the effects of the disrupted brain-wave patterns continued long after the phone was switched off.
https://www.cancer.org/cancer/cancer-causes/radiation-exposure/cellular-phone-towers.html
he power levels are relatively low, the antennas are mounted high above ground level, and the signals are transmitted intermittently, rather than constantly.