[saurik]

Yeah: the models I have seen involve either vibrations that either change how the DNA is folded (the epigenetic behavior) or cause direct DNA damage due to some kind of resonance with hydrogen atoms. (That said: all of the papers I have personally seen on this are with high-powered and very high-frequency sources... specifically all terahertz.)

The local heating one always seemed much simpler, particularly as you didn't even need to have the heating come from the antenna, as I remember old cell phones--which you usually kept next to your head while talking (how quaint ;P--also routinely getting hot to the touch just from heat dissipation from the battery. There were tons of other explanations for the effects people found, though (which were stuff like "while we didn't find more brain tumors, if you got one it tended to be on the side you held your phone").