IARC monograph vol. 102 on Radiofrequencies – April 2013

This very complete publication, which runs to nearly 500 pages, examines the relationship between radiofrequencies and health: dosimetrics, thermal and non-thermal mechanisms of action, biology and epidemiology.

No change to maximum exposure levels is recommended.
With regard to mechanisms of action, it has not been possible to find a non-thermal mechanism.
Epidemiological studies, which remain subject to confirmation (possible methodological bias), seem to show that there may be a very slightly increased risk of glioma and neuroma among very heavy mobile telephone users over a period of more than 10 years.
This is why the IARC classified radiofrequencies under 2B “possibly carcinogenic to humans” in May 2011.