Everbright Securities has rated China Unicom's stock a buy, given the company's 74% year-over-year increase in first-quarter net earnings to 1.1 billion yuan. The report cited strong sales of China Unicom's broadband Internet services and expectations that the company may spin off assets as the Chinese government opens more state companies to private investment. China Mobile is actively seeking growth. It's building a faster, 4G Wi-Fi network that will accommodate the free voice and messaging services used daily across China, such as Hong Kong-listed Tencent's ( TCEHY ) WeChat and QQ. The 4G network, which will cost an estimated $39 billion, will cover about 340 cities. A 5G network is being planned.