Specific Absorption Rate (SAR) values like other technical parameters are made available in device handbooks and on manufacturer websites. These measurements are made under conditions of maximum power and are used to determine compliance of mobile phones with safety standards. Variations in SAR do not mean that there are variations in safety. If people want to reduce exposure then hands free kits are an option.

The power level from a phone can also vary considerably when in use depending on how good the reception is. Once a call is established the mobile phone will power down to the minimum level required to reach the network and maintain a quality call. A 3G handset typically operates at about 1% of its maximum power during a voice call.

The GSMA recognises that there is public concern about the use of mobile devices and the impact this has on health. These are low powered radio services and it is the GSMA opinion based on expert scientific reviews that there are no established health risks from exposures to radio frequency signals from wireless communications up to the levels recommended by the World Health Organisation. Importantly, in May the WHO stated that no adverse health effects have been established for mobile phone use.

The mobile phone industry takes all questions regarding the safety of mobile phones seriously and GSMA has a strong commitment to supporting ongoing scientific research (www.gsma.com/publicpolicy/mobile-and-health/).

Dr Jack Rowley, GSMA Director for Research and Sustainability