Part of the show Science of Left Handedness - Chris McManus
Why are you not allowed to use a mobile phone in a petrol station ?
There have been a number of stories in the past about mobiles
causing explosions of garage forecourts, but as far as we know, none of them have ever been substantiated. The chief concern is that if, whilst someone is using a mobile, the battery were to fall out, it could
theoretically produce a spark across the contacts capable of causing an explosion. The same risk actually also applies to other battery-powered items including walkmans for instance.