Dit staat op de Apple website:

"iPhone has been tested, and meets the FCC RF exposure guidelines for cellular, Wi-Fi, and Bluetooth® operation. When tested for use at the ear, iPhone's highest SAR value is 0.974 W/kg. When tested for body-worn operation, with iPhone positioned 5/8 inch (15 mm) from the body, iPhone's highest SAR value is 0.694 W/kg"

Ter vergelijking met andere GSM telefoons:

Apple® iPhone™ 0.974 W/kg
Motorola RAZR V3i 1.21 W/kg
Nokia N95 0.42 W/kg
Sony Ericsson W950i 1.02 W/kg