This has to be the health advice to end all health advice: Don't use your mobile phone outside, in an open space during a thunderstorm. It is extremely unfortunate that one young woman suffered serious injuries after being struck by lightning whilst on her mobile phone. Injuries more serious than if she hadn't been on the phone, as the phone increases the amount of energy which enters into your body.
(a) There is still an only one in three million chance of someone in the UK being struck by lightning in the first place (Americans get struck more often - they're far more religious).
(b) Using a mobile phone does not effect your chance of being struck by lightning, only the damage it might cause if it does.
(c) Wearing any kind of jewellery or an underwired bra would increase injury in a similar way.
So let's recount some sensible advice about thunderstorms, if you happen to be stuck outside, don't go anywhere near trees, pylons, poles or bodies of water. Get to low open ground as soon as possible. If you are somehow stuck in a high exposed place, discard anything metal on your person (including your pockets). Crouch down with your head between your knees, but in such a way that your body is in contact with the ground as little as possible.
And when you are safely indoors, don't use the landline phone either. In fact, unplug any electronics from the landline - I have had a busted modem when lightning came down the line, it does happen.
However, for persons being struck it is still one in three million. There may be a slightly more worthy subject matter for the BBC News website's health pages.