This review argues that current mobile-telephony safety guidelines address excessive microwave heating but may not account for potential non-thermal influences of low-intensity, pulsed radiation. It highlights an asserted oscillatory similarity between pulsed microwave signals and certain electrochemical activities in humans as a reason for concern. While acknowledging uncertainty about health consequences, it notes reported consistencies between some non-thermal effects and neurological problems described by some users and people with long-term base-station exposure.