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iPhone 4 RF Exposure Information

iPhone has been tested and meets applicable limits for Radio Frequency (RF) exposure.

Specific Absorption Rate (SAR) refers to the rate at which the body absorbs RF energy. SAR limits are 1.6 Watts per kilogram (over a volume containing a mass of 1 gram of tissue) in countries that follow the United States FCC limit and 2.0 W/kg (averaged over 10 grams of tissue) in countries that follow the Council of the European Union limit. During testing, iPhone radios are set to their highest transmission levels and placed in positions that simulate use against the head, with no separation, and near the body, with 10mm separation.

To reduce exposure to RF energy, use a hands-free option, such as the built-in speakerphone, the supplied headphones or other similar accessories. Carry iPhone at least 10mm away from your body to ensure exposure levels remain at or below the as-tested levels. Cases with metal parts may change the RF performance of the device, including its compliance with RF exposure guidelines, in a manner that has not been tested or certified.

Although this device has been tested to determine SAR in each band of operation, not all bands are available in all areas. Bands are dependent on your service provider’s wireless and roaming networks.

GSM Model

See CDMA Model Information

Band Transmit
Frequency
FCC 1g SAR Limit (W/kg)1 Body Head
  • GSM 850
  • UMTS V 850
824–849 1.6 1.11 1.00
  • GSM 1900
  • UMTS II 1900
1850–1910 1.6 0.43 1.17
2.4 GHz Wi-Fi 2400–2483.5 1.6 0.07 0.88
Band Transmit
Frequency
EU 10g SAR Limit (W/kg)2 Body Head
  • EGSM 900
  • UMTS VIII 900
880–915 2.0 0.74 0.66
GSM 1800 1710–1785 2.0 0.28 0.59
UMTS I 2100 1920–1980 2.0 0.36 0.93
2.4 GHz Wi-Fi 2400–2483.5 2.0 0.05 0.36

CDMA Model

See GSM Model Information

Band Transmit
Frequency
FCC & IC 1g SAR Limit (W/kg)1 Body Head
CDMA 800 (BC 0) 824–849 1.6 0.87 1.06
CDMA 1900 (BC 1) 1850–1910 1.6 0.45 1.18
2.4 GHz Wi-Fi 2400–2483.5 1.6 0.07 0.88
  1. FCC OET Bulletin 65, Supplement C (Edition 01-01) & IEEE 1528-2003, & Canada RSS 102, Issue 4, March 2010.
  2. European Council Recommendation of 12 July 1999 on the Limitation of Exposure of the General Public to Electromagnetic Fields [1999/519/EC].