Important safety information293Potentially explosive environmentsSwitch off your phone when in any area with apotentially explosive atmosphere and obey all signs andinstructions. Sparks in such areas could cause anexplosion or fire resulting in bodily injury or even death.Users are advised to switch off your phone while at arefuelling point (service station). Users are reminded ofthe need to observe restrictions on the use of radioequipment in fuel depots (fuel storage and distributionareas), chemical plants or where blasting operations arein progress.Areas with a potentially explosive atmosphere are oftenbut not always clearly marked. They include the areasbelow decks on boats, chemical transfer or storagefacilities, vehicles using liquefied petroleum gas, such aspropane or butane, areas where the air containschemicals or particles, such as grain, dust or metalpowders, and any other area where you would normallybe advised to turn off your vehicle engine.Important: This phone, like any wireless phone, operatesusing radio signals, wireless and landlinenetworks as well as user- programmed functions.Because of this, connections in all conditions cannot be guaranteed. Therefore you should neverrely solely upon any wireless phone for essentialcommunications (e. g. medical emergencies).