Yes, but distance is a factor.  You don't keep a tv in your pocket or hold it near your head.  Most of the studies regarding cell-phone safety are somewhat less than 'independent' especially with regard to newly targeted frequencies, so effects (if any) of long-term exposure are still controversial.    From my usual Mcluhanist vantage, I see that most of the focus is on the potential physical effects of the medium, and few are looking into the psychological and cultural effects.   Radio, TV and now cellular technologies have all been disruptive.