Help, Unicom card can't be sold in different places. Why?

On August 8th, 20 18, China Unicom's mobile phone business hall's client-side number cancellation service was re-launched in different provinces, and the first batch of online provinces was Shandong. In addition to ordinary package products, it also supports the account cancellation function of 2I users (Internet package users) in the mobile phone hall, and only transfers the balance to other Unicom numbers. The handling rules are as follows: 1. China Unicom mobile phone business hall client: 20 18. In addition to ordinary package products, it also supports 2I users (Internet package users) to cancel their accounts in the mobile phone office, and only transfer the balance to other Unicom numbers. 2. Object: Unicom mobile network single card users and the current available balance (real-time balance) must not be lower than 50 yuan; Services such as group number and American number agreement included in the number cannot be cancelled in the mobile phone hall. Please guide the user to the business hall to cancel the account. For more information, click the link. 3. Function Description: When the user meets the requirements for self-service account cancellation, the system will automatically pop up a dialog box to explain the reason; 1) Avoid that the user balance is not enough to close the account normally, and there needs to be a certain phone bill in the account. Prepaid telephone charges = overdue arrears+current arrears+real-time telephone charges +50 yuan-prepayment; 2) The successfully logged-out number can no longer log in to the mobile phone client; 3) If the balance is transferred to this number and not received immediately, it shall be handled before the 20th of the following month. (The balance of the 2G 3G number can only be transferred to the 2G 3G number, and the 4G number can be transferred to the 4G number) 4) Due to the manual review process, in order to avoid cross-month, it is impossible to close the account in the last two days of the month. 4. Deal with the entrance: users can log in to the mobile phone business hall through the mobile phone number and password to cancel the account, and then select Service-Deal with-Cancel the account service.