Apple says iPhones safe despite China fires
Apple has blamed "external factors" for a handful of iPhone battery fires in China, BBC says.
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.
Apple said the iPhones had external physical damage "which led to the thermal event".
The watchdog's report quoted one woman as saying her iPhone 6S Plus exploded in August, shattering the screen and leaving the battery and back of the phone blackened.