Can Unicom's mobile phone card stop and keep the number on it?

If there is no restrictive agreement or contract, the number can be stopped and guaranteed. If there is a contract, it needs to be implemented according to the contract. Eligible customers can apply for downtime insurance through the following channels, which will take effect immediately: 1 Log in to the online business hall /02oec homepage, click "Business Handling > Other Business > Downtime Insurance Policy" and select "Downtime Insurance Policy"; 2 after logging in to the client of the mobile phone business hall, click Services > Handling > Handling of Other Services > Restoring the phone with the number of downtime protection, select the number of downtime protection, click the Confirm button, and enter the verification code of the sent SMS. Because some provinces do not support online downtime, if all the above methods fail, you can contact local customer service or consult the business hall.