Originally Posted by BizFlyin

I've never claimed to be the regulator, and by the way I do not use my cell phone during takeoff or landing. I do however use it once we've landed and are on our way to the gate. This is allowed in many countries. To date, I've never been told to turn it off on a BA flight, despite not trying to hide it.

As of now, the risk is zero. Because zero out of x million flights have been impacted. You can say theoretically that there is always "some" risk, but factually, as of now, there is none. Once a single flight has been impacted by this, we can calculate the actual risk. Given this, even considering the "theoretical" risk, it is amazingly small. Much smaller, for example, than allowing alcholol to be served on board, in my personal opinion.