BBC News:

Eight users have complained to Shanghai’s consumer watchdog that their iPhone 6 series handsets spontaneously combusted or exploded.

The US tech giant said it had conducted tests on the devices and had found “no cause for concern with these products”.

One technology analyst told the BBC she did not believe it to be a widespread problem.

And, most importantly:

Apple said the iPhones had external physical damage “which led to the thermal event”.