Table of Contents
Advertisement
i747M_SWG.book Page 2 Friday, May 25, 2012 2:06 PM
Safety
Getting the Most Out of Your Reception
Keeping Tabs on Signal Strength
The quality of each call you make or receive depends on
the signal strength in your area. Your phone informs you
of the current signal strength by displaying a number of
bars next to the signal strength icon. The more bars
displayed, the stronger the signal. If you're inside a
building, being near a window may give you better
reception.
Understanding How Your Phone Operates
Your phone is basically a radio transmitter and receiver.
When it's turned on, it receives and transmits radio
frequency (RF) signals. When you use your phone, the
system handling your call controls the power level. This
power can range from 0.006 watts to 0.2 watts in digital
mode.
Knowing Radio Frequency Safety
The design of your phone complies with updated NCRP
standards described below. In 1991-92, the Institute of
Electrical and Electronics Engineers (IEEE) and the
American National Standards Institute (ANSI) joined in
updating ANSI's 1982 standard for safety levels with
respect to human exposure to RF signals. More than 120
scientists, engineers and physicians from universities,
government health agencies, and industries developed
2 Safety
Advertisement
Table of Contents
