Is your phone bill refunded monthly? If it is, the business hall will basically tell you that the loss of the mobile phone caused by the separation of the machine card, then your remaining phone charges are no longer returned, if you are strongly required in the local direct business hall (tough attitude), they will suggest that you go to buy a mobile phone as before, and then get them to give you a mobile phone number to re-bind, you can return. Of course, each city has a certain difference, it is only recommended that you go to the local mobile directly under the business hall to ask Ha.