Can cellphones provoke an explosion when exposed to flammable gases?
Yes and no. What happens at a gas station is that the car builds up a static electric charge and holds it. When the gas nozzle touches the gas filler neck the charge jumps to the nozzle as it tries to discharge. A spark in the presence of flammable gas in the correct concentration will cause a fire. Almost every one has experience this when they’ve touched a metal door knob, or anything metal in the winter after they’ve built up a charge. You know what kind of shock you get. Now on the 2d part of my answer. Hazardous area are defined by Class and Division depending on how much of a danger is posed. Any electrical product (cell phones included) are to be “intrinsically safe” in the class & division to be used. If you were to have any electrical item in an area with the correct gas/air concentration AND a spark generated internally to the cell phone, it is possible to ignite the gas. In the normal use, there is no problem using it at a gas pump. The door switches in the car frame create
