Go.
You see, I bet you a month's worth of salary that on every, or 99% of your flights, there's at least one mobile on. Most likely alot more than that. On purpose, by accident, in the hold or in the overhead lockers, there's going to be a few on.
Yes, we should minimise the chances, but really, being told there's a few mobiles on on your airplane should be no news at all.