What is the SAR (Specific Absorption Rate) of my Apple iPhone?
Your iPhone is a radio device, and therefore regularly emits energy at wavelengths of 850MHz, 1900MHz or other frequencies to keep contact with cellular towers.
The US FCC (Federal Communications Commission) and the US FDA (Food and Drug Administration) have established limits for safe exposure to radio frequency (RF) energy. These limits are given in terms of a unit known as the Specific Absorption Rate (SAR), a measure of how much radio energy is absorbed by your body when using a mobile phone.
The FCC limit for public exposure from mobile phones is an SAR level of 1.6 watts per kilogram. Any cellular phones legally sold in the US must have SAR levels of 1.6 W/kg or less to be considered safe for consumers. These standards also apply to Bluetooth and Wi-Fi connections.
Apple iPhone SAR levels are listed below for all models in W/kg:
Original iPhone: 0.974 (FCC ID: BCGA1203)
iPhone 3G: 1.38 (FCC ID: BCGA1241)
iPhone 3GS: 0.79 (FCC ID: BCGA1303A)
iPhone 4 GSM: 1.17 (FCC ID: BCG-E2380A)
iPhone 4 CDMA: 1.18 (FCC ID: BCG-E2422A)
iPhone 4S: 1.11 (FCC ID: BCG-E2430A)
iPhone 5: RF Exposure Information (FCC ID: BCG-E2599A)