Meh. I tend to think that I'm exposed to RF radiation all the time. Cell towers, television towers, microwave ovens, wifi, radio, shortwave, high tension power lines, medical equipment, etc (and I'm not counting the visible light spectrum as out bodies are -definitely- well evolved to handle that). I'm not convinced having a cellphone in my pocket is going to make things any worse. I have a bluetooth handsfree radio in my car for convenience and -driving safety more than anything else. I have this dirty suspicion that the French schools banned cell phones truly because cell phones in schools are another form of distraction for students and an interruption of the whole class, but that they had to pass it under health regulation so as not to face judicial actions on contravening individual rights. For every study I've seen saying that that such radiation might cause a problem I've seen another study that says it doesn't.