The document discusses opportunities in the mobile services industry in Vietnam. It notes that smartphone sales are increasing and capturing a larger share of the mobile market. It argues that to survive, mobile retailers need to shift their focus from just selling devices to providing mobile services. It provides examples of companies like Q-Mobile, Samsung, and HTC that offer additional services like content, makeup tutorials, and insurance to attract and retain customers. The key to leadership, the document states, is mobile services which can better meet customer demands and differentiate companies in the competitive market.