Yichengtong (bearer card) is a mobile payment service jointly launched by Zhuhai Public Transport Group Co., Ltd. and Zhuhai Branch of China Telecom Co., Ltd., which integrates the electronic payment function of bus ic card and the communication function of telecom Tianyi mobile phone UIM card, and can be used for communication and bus ride. In other words, users who have installed the UIM card of Yicheng Tong Can will use the mobile phone as a public transport in Dhaka while using the functions such as normal calls of Tianyi mobile phone. Like the access card, the mobile phone can realize the ride function near the bus POS equipment.