Have you actually read that paper? Line by line? It's
garbage.
The "researchers" bought a cow brain and cut a rectangular slab of it. So far so good. They put the slab in a plexiglas box and waited for it to reach thermal equilibrium with the room and air.
Then then held a cell phone directly against the brain tissue for 15 minutes.
Yes. That's right. They held the phone DIRECTLY AGAINST THE BRAIN.
They have the gall to describe this as being "exactly as a person was communicating with a cell phone." Yes, I always hold my phone directly against my brain tissue.
The effect measured was that the tissue got a fraction of a degree warmer. Of course cell-phones are very warm devices and will warm up any slab of flesh they're resting on.
Did the "researchers" isolate the radio energy by testing again with the phone on airplane mode? Nope. Did they in any way distinguish between radio energy and thermal energy from a battery-operated supercomputer? Nah bro. No discussion of that whatsoever.
Meanwhile, the paper is written like an undergraduate report by somebody who doesn't speak english very well and who doesn't have an editor. How could this be? Well, the paper was published in the International Journal of Preventive Medicine, a publication of Isfahan University of Medical Sciences in Iran. This journal has an impact factor of 0.98, putting in the bottom third of all journals.
This isn't science in any way, shape or form. It should never be cited by anybody except as an example of a shitty, shitty paper.