Potentially explosive environments, Emergency calls, Potentially explosive environments emergency calls – Samsung SGH-T669AAATMB User Manual
The HAC rating and measurement procedure are described in the American National Standards Institute (ANSI)
Other Medical Devices
If you use any other personal medical devices, consult the manufacturer of your device to determine if it is
adequately shielded from external RF energy. Your physician may be able to assist you in obtaining this information.
Switch your phone off in health care facilities when any regulations posted in these areas instruct you to do so.
Hospitals or health care facilities may be using equipment that could be sensitive to external RF energy.
RF signals may affect improperly installed or inadequately shielded electronic systems in motor vehicles. Check with
the manufacturer or its representative regarding your vehicle. You should also consult the manufacturer of any
equipment that has been added to your vehicle.
Switch your phone off in any facility where posted notices require you to do so.
Potentially Explosive Environments
Switch your phone off when in any area with a potentially explosive atmosphere and obey all signs and instructions.
Sparks in such areas could cause an explosion or fire resulting in bodily injury or even death.
Users are advised to switch the phone off while at a refueling point (service station). Users are reminded of the need
to observe restrictions on the use of radio equipment in fuel depots (fuel storage and distribution areas), chemical
plants or where blasting operations are in progress.
Areas with a potentially explosive atmosphere are often but not always clearly marked. They include below deck on
boats, chemical transfer or storage facilities, vehicles using liquefied petroleum gas (such as propane or butane),
areas where the air contains chemicals or particles, such as grain, dust or metal powders, and any other area where
you would normally be advised to turn off your vehicle engine.
This phone, like any wireless phone, operates using radio signals, wireless and landline networks as well as user-
programmed functions, which cannot guarantee connection in all conditions. Therefore, you should never rely solely
on any wireless phone for essential communications (medical emergencies, for example).