Lenovo may be the worlds biggest PC maker, but its clearer than ever that much of the companys growth now comes from mobile. The Chinese tech giant has reported a 30 percent year-over-year jump in its calendar fourth quarter profit ($265 million) thats owed partly to massive spikes in non-PC shipments. Its smartphone deliveries grew by 47 percent to 13.9 million, and its tablet volume tripled to 3.4 million — apparently, the Yoga Tablet has been flying off the shelves.