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Appendix A Safety and Handling 105
Exposure to Radio Frequency Energy
iPhone contains radio transmitters and receivers. When on, iPhone receives and sends
out radio frequency (RF) energy through its antenna. The iPhone antenna is located on
the back of iPhone near the dock connector. iPhone is designed and manufactured not
to exceed limits for exposure to RF energy set by the Federal Communications
Commission (FCC) of the United States. The exposure standard employs a unit of
measurement known as the specific absorption rate, or SAR. The SAR limit applicable to
iPhone set by the FCC is 1.6 watts per kilogram (W/kg). Tests for SAR are conducted
using standard operating positions (i.e., at the ear and worn on the body) specified by
the FCC with iPhone transmitting at its highest certified power level in all tested
frequency bands. Although SAR is determined at the highest certified power level, the
actual SAR level of iPhone while in operation can be well below the maximum value
because iPhone adjusts its cellular transmitting power based in part on proximity to
the wireless network. In general, the closer you are to a cellular base station, the lower
the cellular transmitting power level.
iPhone has been tested,
1
and meets the FCC RF exposure guidelines for cellular, Wi-Fi,
and Bluetooth operation. When tested for use at the ear, iPhone’s highest SAR value is
0.974 W/kg. When tested for body-worn operation, with iPhone positioned 5/8 inch
(15 mm) from the body, iPhone’s highest SAR value is 0.694 W/kg. For body-worn
operation, iPhone’s SAR measurement may exceed the FCC exposure guidelines if
positioned less than 5/8 inch (15 mm) from the body. For optimal mobile device
performance and to be sure that human exposure to RF energy does not exceed the
FCC guidelines, always follow these instructions and precautions: When on a call using
the built-in audio receiver in iPhone, hold iPhone with the 30-pin connector pointed
down toward your shoulder to increase separation from the antenna. For body-worn
operation, keep iPhone at least 5/8 inch (15 mm) away from the body, and only use
carrying cases, belt clips, or holders that do not have metal parts and that maintain at
least 5/8 inch (15 mm) separation between iPhone and the body. When using the EDGE
data transmission feature of iPhone (see “Connecting to the Internet” on page 21 for
more information), position iPhone’s antenna at least 5/8 inch (15 mm) from the body.
If you are still concerned about exposure to RF energy, you can further limit your
exposure by limiting the amount of time using iPhone, since time is a factor in how
much exposure a person receives, and by placing more distance between your body
and iPhone, since exposure level drops off dramatically with distance.
1.
The device was tested by an accredited laboratory according to measurement standards and procedures specified in
FCC OET Bulletin 65, Supplement C (Edition 01-01) and IEEE P1528.1, April 21 2003.