The trouble is, the evidence got destroyed.

RCR News, July 19 issue, a telecomm weekly has a story on the Qualcomm
in-flight tests being successful (i.e. safe), but one expert says:

"(But) I'm pretty confident there have been flights that have come down, and a
large part of the equation was electrical interference"

The likelihood of a terrorist hijacking a plane is smaller than a passenger
sneaking in an illicit phone call.