94Health and safety informationdevice to determine if it is adequately shieldedfrom external RF energy. Your physician may beable to assist you in obtaining this information.Switch off your phone in health care facilities whenany regulations posted in these areas instruct youto do so. Hospitals or health care facilities may beusing equipment that could be sensitive to externalRF energy.VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles. Check with the manufacturer or itsrepresentative regarding your vehicle. You shouldalso consult the manufacturer of any equipmentthat has been added to your vehicle.Posted FacilitiesSwitch off your phone in any facility where postednotices require you to do so.Potentially Explosive AtmospheresSwitch off your phone when in any area with apotentially explosive atmosphere and obey allsigns and instructions. Sparks in such areas couldcause an explosion or fire resulting in bodily injuryor even death. Users are advised to switch off thephone while at a refueling point (service station).Users are reminded of the need to observerestrictions on the use of radio equipment in fueldepots (fuel storage and distribution areas),chemical plants or where blasting operations are inprogress.Areas with a potentially explosive atmosphere areoften but not always clearly marked. They includebelow deck on boats, chemical transfer or storagefacilities, vehicles using liquefied petroleum gas(such as propane or butane), areas where the aircontains chemicals or particles, such as grain, dustor metal powders, and any other area where you