Pandu, a 25-year-old mobile phone salesman at Oke Shop in a mall in central Jakarta, has noticed a change in his customers' tastes. Indonesian consumers who used to prefer BlackBerry or Samsung Electronics devices have started asking for products made by Lenovo. The world's No. 1 PC maker is expanding into smartphones, and Indonesia is one of its most important targets. Keeping salesmen like Pandu busy is an important part of Lenovo CEO Yang Yuanqing's plan to transform the Chinese PC maker into a credible rival to Apple and Samsung. Lenovo is the world's No. 4 smartphone brand, according to data released by market research firm IDC on Jan 27. On Jan 28, Lenovo announced it was restructuring into four main business groups: PCs, mobile, servers and storage, and cloud services.