With three users of iPhone units suffering from electrocution the past few weeks, the Cupertino-based tech giant launched a new campaign to push users if their gadgets to utilise official USB power adapters to avoid accidents.

So far, a Chinese woman had died due to electrocution while another Chinese man is in coma because of using third-party rechargers. However, in the case of an Australian woman who last week suffered minor injuries while using her iPhone, it was not clear if the device was being charged at the same time when she was jolted by a powerful electricity charge.

"Apple has always put user's security first, and as result all out products have gone through rigorous security and reliability testing ... They are also designed in compliance with government safety standards around the world," Apple's Web site in China stated.

Apple is still investigating the death of Ma Ailun, the 23-year-old female flight attendant who died because of iPhone electrocution. The tech giant is cooperating with authorities, Apple said.

The company added a new page (http://www.apple.com.cn/power-adapters/) that has details on its different USB power adapters.

The South China Morning Post, a Chinese newspaper, cited two academics who explained the electrocution cases to a risk all users of devices with installed battery and the unit is being charged and used simultaneously, whether it is a shaver or a phone.

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