Cell phones and digital cellular networks can produce high enough non-ionizing radio frequency electromagnetic radiation energy during long exposures, i.e. more than 1 hour, that can increase temperature of brain tissues high enough to affect the human nervous system. International guidelines allow a localized maximum exposure which is specified as 10 W/kg specific absorption rate (SAR), averaged over a 10-gram tissue for non-ionizing radio frequency electromagnetic radiation energy. See Ref. [18]. Radio frequency radiation includes radio waves and microwaves. In the new fifth generation (5G) wireless technology for cell phones and for digital cellular networks, electromagnetic radiation waves operate between...