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Consult the airline staff about the use of wireless devices 
onboard the aircraft and enable airplane mode of your phone 
when boarding an aircraft. 
Interference in Vehicles 
Please note that because of possible interference with electronic 
equipment, some vehicle manufacturers forbid the use of mobile 
phones in their vehicles unless a hands-free kit with an external 
antenna is included in the installation. 
Explosive Environments 
Gas Stations and Explosive Atmospheres 
In locations with potentially explosive atmospheres, obey all 
posted signs to turn off wireless devices such as your phone or 
other radio equipment. 
Areas with potentially explosive atmospheres include fueling 
areas, below decks on boats, fuel or chemical transfer or storage 
facilities, and areas where the air contains chemicals or particles, 
such as grain, dust, or metal powders. 
Blasting Caps and Areas 
Power off your mobile phone or wireless device when in a 
blasting area or in areas where signs are posted to power off 
“two-way radios” or “electronic devices” to avoid interfering with 
blasting operations.