So here is what they did:
They took 400 cress seeds and placed them in 12 trays. Then, they placed 6 trays in 2 separate rooms at the same temperature. They gave the same amount of water and sun to all the trays for 12 days.However, 6 of the trays were put next to two [Wi-Fi] routers. Such routers broadcast the same type of radiation as an ordinary mobile.
After 12 days what the result spoke was clear: cress seeds next to the router did not grow, and some of them were even mutated or dead.