Sprint Nextel 3585I - Manual (Page 107)

Section 4: Safety Guidelines and Warranty Information
4A: Safety 101
PERSONS WITH A PACEMAKER:
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Should always keep the phone at least 20 cm from their pacemaker
when the phone is switched On.
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Should not carry the phone in a breast pocket.
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Should use the ear opposite the pacemaker to minimize the potential
for interference.
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Should switch off the phone immediately if there is any reason to
suspect that interference is taking place.
Note: Always turn off the phone in health care facilities and request
permission before using the phone near medical equipment.
Turning Off Your Phone Before Flying
Turn off your phone before boarding any aircraft. To prevent possible
interference with aircraft systems, the U.S. Federal Aviation
Administration (FAA) regulations require you to have permission from a
crew member to use your phone while the plane is on the ground. To
prevent any risk of interference, FCC regulations prohibit using your
phone while the plane is in the air.
Turning Off Your Phone in Dangerous Areas
To avoid interfering with blasting operations, turn off your phone when
in a blasting area or in other areas with signs indicating that two-way
radios should be turned off. Construction crews often use remote-control
RF devices to set off explosives.
Turn off your phone when you’re in any area that has a potentially
explosive atmosphere. Although it’s rare, your phone or its accessories
could generate sparks. Sparks could cause an explosion or a fire resulting
in bodily injury or even death. These areas are often, but not always,
clearly marked. They include:
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Fueling areas such as gas stations.
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Below deck on boats.
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Fuel or chemical transfer or storage facilities.
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Areas where the air contains chemicals or particles such as grain,
just or metal powders.