According to three senior London doctors a 15-year-old girl was struck by lightning while using her mobile phone in a park during a storm.
...
"This rare phenomenon is a public health issue, and education is necessary to highlight the risk," authors Swinda Esprit, Prasad Kothari and Ram Dhillon wrote.

[ Color me extremely skeptical. I mean, I'm not saying it's impossible that the cell phone made the strike a teeny bit more likely, but it's far fetched to imply that it was a major contributor. I think the girl would've been struck anyway. I thought "don't stand in open spaces, particularly elevated ones, during a thunderstorm" was clear enough, personally. -k]