The article said it wasn't the phone, but, since most women wear wool socks, pants, and phenolic soled shoes, that when getting in and out of the car, they creat a static discharge which will ignite the fuel on the ground that may have been spilled from previous overflows.
Mythbusters had a fuel pump safety expert, may have been from an insurance company. He said that the real danger was static discharge, often from getting in and sitting in the car while the gas is being pumped. When you pick up the gas nozzle you discharge static electricty before pumping the gas, if you get back in the car and rub against the seat you create an additional charge, then you may create a spark when you pull the nozzle out and fumes are present. Women were more likely to do this, so there is a higher percent of women who get burned from pump accidents.