Food card is a main function of Yi Peripheral Food Client. The long-term discounts (not short-term coupons) of selected local restaurants are displayed in the form of electronic membership cards. Customers can enjoy the discounts by using the food card when they successfully add it to the store.

.Yi Peripheral is a product for mobile Internet users. Based on China Telecom's positioning, GIS, navigation and other capabilities, it aggregates its own and third-party LBS applications in the form of a portal to provide mobile Internet users with a full range of location-based life services.

At the same time, Yi peripheral products integrate China Telecom's characteristic POI information, provide peripheral search, route planning, bus transfer, real-time traffic query and other functions, and provide online navigation services for travel users.