what is sar value in mobile

The Specific Absorption Rate (SAR) is a measure of the amount of radio frequency energy absorbed by the body when using a mobile phone. It is a unit that measures the rate of RF (radiofrequency) energy absorption by the body from the source being measured, in this case, a cell phone. The FCC limit for public exposure from cellular telephones is an SAR level of 1.6 watts per kilogram (1.6 W/kg), and any cell phone at or below this SAR level is considered safe. SAR values collected by the FCC are intended only to ensure that the cell phone does not exceed the FCC’s maximum permissible exposure levels even when operating in conditions that result in the device’s highest possible but not typical RF energy. While SAR values are an important tool in judging the maximum possible exposure to RF energy from a particular model of cell phone, a single SAR value does not provide sufficient information about the amount of RF exposure under typical usage conditions to reliably compare individual cell phone models. To check the SAR value of a mobile phone, one can check the user guide, settings, or use the USSD code *#07# .