Cell phones ARE NOT a sufficient source of ignition to cause gasoline fumes to ignite. I've used a cell phone around fuel pumps for many years. Obviously, I am still here..so I haven't "done blowed up" yet. :lol:
http://www.snopes.com/autos/hazards/gasvapor.asp
From Mythbusters, Episode 2:
Using one’s cell phone while pumping gas/petrol can cause an explosion.
BUSTED
A properly-working cell phone poses almost no danger of igniting gasoline, even when surrounded by gasoline vapor with the optimum fuel-air mix for ignition. The actual risk comes from an electrostatic discharge between a charged driver and the car, often a result of continually getting into and out of the vehicle.
(This myth was revisited in episode 14 and it was busted again.)
From Mythbusters, Episode 14:
REVISITED: Using one’s cell phone while pumping gas/petrol can cause an explosion. (From Episode 2)
RE-BUSTED
The battery of retests the MythBusters performed reaffirmed their original Busted verdict.