Health and safety information125Posted facilitiesSwitch off your phone in any facility whereposted notices require you to do so.Potentially explosive environmentsSwitch off your phone when in any area with apotentially explosive atmosphere, and obey allsigns and instructions. Sparks in such areascould cause an explosion or fire resulting inbodily injury or even death.Users are advised to switch off the phone whileat a refuelling point (service station). Users arereminded of the need to observe restrictions onthe use of radio equipment in fuel depots (fuelstorage and distribution areas), chemicalplants, or where blasting operations are inprogress.Areas with a potentially explosive atmosphereare often but not always clearly marked. Theyinclude the areas below decks on boats,chemical transfer or storage facilities, vehiclesusing liquefied petroleum gas, such as propaneor butane, areas where the air containschemicals or particles, such as grain, dust ormetal powders, and any other area where youwould normally be advised to turn off yourvehicle engine.Emergency callsThis phone, like any wireless phone, operatesusing radio signals, wireless, and landlinenetworks as well as user-programmedfunctions, which cannot guarantee connectionin all conditions. Therefore, you should neverrely solely on any wireless phone for essentialcommunications like medical emergencies.