The other day CBC published an article about cellphones and cancer. This American Life did a more in depth piece just a few years ago and there are good reasons to be paranoid about it and turn them off when it is on your body unless it’s at a distance. If children are handling wifi devices, they should be on airplane mode.
Check out the opinions of scientists who don’t work for cell phone companies. Their conclusions are not as rosey as the scientists paid by the phone companies. Warnings in the fine print of cellphone contracts as per the cartoon above.