[ 125 ]Reference information18Hearing aidsSome digital wireless phones may interfere with hearing aids. In the eventof such interference, consult your wireless provider.Other medical devicesOperation of any radio transmitting equipment, including cellular phones,may interfere with the functionality of inadequately protected medicaldevices. Consult a physician or the manufacturer of the medical device todetermine if it is adequately shielded from external RF energy, or if youhave any questions.Switch off your phone in health care facilities when regulations posted inthese areas instruct you to do so. Hospitals or health care facilities maybe using equipment that could be sensitive to RF energy.Electronic devicesMost modern electronic equipment is shielded from radio frequency (RF)signals. However, certain electronic equipment may not be shieldedagainst the RF signals emanating from your wireless phone.Posted facilitiesSwitch your phone off in any facility where posted notices so require.Potentially explosive atmospheresSwitch off your phone when in any area with a potentially explosiveatmosphere and obey all signs and instructions. Sparks in such areas couldcause an explosion or fire resulting in bodily injury or even death.Users are advised to switch off the phone when at a refuelling point(service station). Users are reminded of the need to observe restrictionsregarding the use of radio equipment in fuel depots (fuel storage anddistribution areas), chemical plants, or where blasting operations are inprogress.Areas with a potentially explosive atmosphere are often but not alwaysclearly marked. They include below deck on boats, chemical transfer/storage facilities, vehicles using liquefied petroleum gas (such as propane
