This searchable table contains all the cell phone models available from the major U.S. carriers as of December 2010 (newer models may not be listed). The numbers refer to the rate of radiofrequency energy your body absorbs from the phone. The lower the number, the lower the radiation exposure. Most phones on the market fall between 0.35 and 1.59 watts per kilogram, which is the maximum level allowed by the U.S. government. Keep in mind your actual exposure will depend on how you use your phone, your carrier and network conditions.
Source: Environmental Working Group