What is clear to me us that fear of cellphone radiation is not healthy, although I’m not sure it can cause cancer. I found this recent documentary:
very interesting. It is not about harmless cellphone radiation, but about radioactivity which is, of course, potentially harmful. However, as pointed out in this documenary, the most likely adverse health outcomes due to the Fukushima disaster will not come from the radiation, rather from the fear of radiation and the psychological distress caused by the evacuations.
This is based on the observations of the health of people living in the neighborhood of Chernobyl. What happened there was that some models predicted hundreds of thousands of extra cancer cases, but nothing of the sort has been observed. What has been found is that people there have typically stress related illnesses like high blood pressure.