For a phone to be certified by the FCC and sold in the U.S. , WHO lists radio frequency electromagnetic fields as a ` ` ' ' '' possible carcinogen . This is over - all category , and includes everything from mercury to chloroform . Scientists are n't sure how to explain cell phone RF emissions to consumers . Specific absorption rate is the most commonly cited factor .
WHO lists radio frequency electromagnetic fields as a ` ` ' ' '' possible carcinogen . This is over - all category , and includes everything from mercury to chloroform . Scientists are n't sure how to explain cell phone RF emissions to consumers . Specific absorption rate is the most commonly cited factor .