According to the Cellular Telecommunications Industry Association (CTIA), SAR or Specific Absorption Rate is “a way of measuring the quantity of radio frequency (RF) energy that is absorbed by the body.” For a phone to pass FCC certification, that phone’s maximum SAR level must be less than 1.6W/kg (watts per kilogram). Manufacturers published SAR levels represent the maximum SAR level with the phone next to the ear, a level obtained through required FCC tests.
URLs to check you phone after the jump…

According to the Cellular Telecommunications Industry Association (CTIA), SAR or Specific Absorption Rate is “a way of measuring the quantity of radio frequency (RF) energy that is absorbed by the body.” For a phone to pass FCC certification, that phone’s maximum SAR level must be less than 1.6W/kg (watts per kilogram). Manufacturers published SAR levels represent the maximum SAR level with the phone next to the ear, a level obtained through required FCC tests.
One of the lowest SAR was the Sidekick 1 at only 0.276. You can review the SAR of your mobile phone on the Federal Communications Commission’s (FCC) Web site, SARshield.com.
You can usually find the SAR value of a cellular phone through the FCC database if you can get the FCC ID number from the instrument. The FCC ID number is usually shown somewhere on the case of the phone or device. In many cases, you will have to remove the battery pack to find the number.