Why Are The Missing Malaysian Airlines Passengers' Phones Still Ringing?

The 'unprecedented mystery' behind the disappearance of Malaysian Airlines flight MH 370 deepened on Monday when relatives claimed they were able to call the cellphones of their missing loved ones. According to the Washington Post, family of some of the 239 people on board the vanished Boeing 777 said that they were getting ring tones and could see them active online through a Chinese social networking service called QQ.