If you need to buy Samsung mobile phones, it is recommended to buy them in regular mobile phone stores, such as Samsung designated stores, Samsung Mall, Tmall Samsung official flagship store, large shopping malls and so on. If you need to buy a contract machine, it is recommended to go to the business hall of the local regular operator to buy it. Address information of local Samsung authorized dealer: 1. You can log on to Samsung official website. 2. Click on the monopoly network-select province/city-type column, select full product store/experience store-product column, and select mobile phone. 3. Consult the nearest Samsung authorized dealer.