[ 71 ]Reference informationOperating environmentRemember to follow any special regulations in force in any area and always switch off yourphone whenever it is forbidden to use it, or when it may cause interference or danger.Use the phone only in its normal operating positions.Electronic devicesMost modern electronic equipment is shielded from radio frequency (RF) signals. However, certainelectronic equipment may not be shielded against the RF signals from your wireless phone.PACEMAKERSPacemaker manufacturers recommend that a minimum separation of at least 6 inches(approximately 20 cm) be maintained between a handheld wireless phone and a pacemaker toavoid potential interference with the pacemaker. These recommendations are consistent withthe independent research by and recommendations of Wireless Technology Research. Personswith pacemakers:• Should always keep the phone more than 6 inches (20 cm) from their pacemaker when thephone is switched on• Should not carry the phone in a breast pocket• Should use the ear opposite the pacemaker to minimize the potential for interference.• Switch off the phone immediately if you have any reason to suspect that interference istaking place.HEARING AIDSSome digital wireless phones may interfere with some hearing aids. In the event of suchinterference, you may want to consult your service provider.Other medical devicesOperation of any radio transmitting equipment, including cellular phones, may interferewith the functionality of inadequately protected medical devices. Consult a physician or themanufacturer of the medical device to determine if they are adequately shielded from externalRF energy or if you have any questions. Switch off your phone in health care facilities whenany regulations posted in these areas instruct you to do so. Hospitals or health care facilitiesmay be using equipment that could be sensitive to external RF energy.VehiclesRF signals may affect improperly installed or inadequately shielded electronic systems in motorvehicles (for example, electronic fuel injection systems, electronic antiskid/antilock brakingsystems, electronic speed control systems, air bag systems). Check with the manufacturer or itsrepresentative regarding your vehicle. You should also consult the manufacturer of anyequipment that has been added to your vehicle.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 explosive atmosphere and obey allsigns and instructions. Sparks in such areas could cause an explosion or fire resulting in propertyand/or bodily injury or even death.Users are advised to switch off the phone when at a refuelling point (service station). Users arereminded of the need to observe restrictions on the use of radio equipment in fuel depots (fuelstorage and distribution areas), chemical plants, or where blasting operations are in progress.