The beauty of science is that we never know anything with absolute certainty. However, things like burnt toast and cured meat have been shown to be carcinogenic

The beauty of science is that we never know anything with absolute certainty. However, things like burnt toast and cured meat have been shown to be carcinogenic. On the other hand, non-ionizing radiation has not been shown to be cancer causing despite a lot of studies. In that context, I would say it is absolutely absurd to worry about mobile phones without some clear new evidence.