Real-world cell phone radiofrequency electromagnetic field exposures

Wall et al. (2019) tested 22 handsets representing 17 models plus Bluetooth headset comparisons under 2G phone use; their original publisher abstract/highlights reported 10–400 times lower measured headset power density than connected phone near-ear measurements. This is source-proximate field measurement, NOT a 10–400-fold reduction in human head SAR or cancer incidence, nor representative of every modern Bluetooth headset.

A 2019 original environmental exposure study reported measured power-density exposure from tested Bluetooth headsets roughly 10–400 times below the corresponding phones held at the ear. The endpoint was RF power density in tested configurations, not the absorbed head SAR or cancer incidence of modern earbuds.