Following an electrocution in China reportedly caused by a third-party power adapter that was connected to an iPhone, Apple has announced a power adapter trade-in program that allows iPhone, iPad or iPod owners trade their third-party USB power adapter for an official one.Related StoriesiPad 5 rumour: video shows leaked next-gen iPad with illuminated Apple logoMore than half of developers considering ditching iOS 6 support in iOS 7 app updates