scope:

This Supplement considers the types of mobile and portable telecommunication devices that are consumer items in common use by the general public including mobile phones, cordless phones, tablets, phablets and satellite phones.

Taking into account WHO documents and other ITU-T Recommendations on this subject, information is provided that explains the factors affecting personal exposure during the use of mobile and portable devices and how this relates to the provision of communications functionality.

The absorption of RF-EMF energy due to devices used close to the head or body is currently assessed relative to specific absorption rate (SAR) limits for frequencies from 300 MHz to 6 GHz. Further information on the assessment of SAR for mobile devices is provided in clause 6.5 of [ITU-T K.91]. Standardized techniques for the assessment of device SAR for exposure to the head and torso are provided in [IEC/IEEE 62209-1528]. The SAR measurement methodologies are designed to be conservative for mobile device users. The level of SAR induced in the user of a mobile device varies dynamically. The range of considered factors that influences the level of SAR induced from devices includes technical aspects of the devices and their corresponding networks; usage patterns of the device; how the device is held against the body and the physical characteristics of the body. Additional information is provided to minimize misconceptions concerning the use of mobile devices and additional equipment.