There have been multiple studies done that have shown that there is no direct relationship between cell phone use and cancer. The only study that did was where they talked to people that had brain cancer and asked them if they used cell phones. A lot of people said that they did and based upon that the papers authors said that there might be a link. Plus, that paper has been widely criticized by other researchers as having a lot of problems.
5 billion people across the world use cell phones now. With that much exposure, if cell phones really, really caused cancer, shouldn't we be seeing an epidemic of brain cancer? But yet there is no higher incident rate of brain cancer now that there has ever been.
BTW, the same group that said cell phones may cause cancer have said that talcum power can cause cancer. So how is that talcum power cancer rate going?
So some idiot group puts this out there, every media outlet runs with it and now stupid people everywhere think that cell phones may cause cancer. Maybe that same group should say that to avoid cell phone cancer, you need to wear a tin foil hat and that way we'll be able to identify all the stupid people out there.