What does the moving 0000 or 00000 mean?

Mobile's 0000 is to check which services you have subscribed to or opened; 00000 is to unsubscribe all short message service services provided by the information service business operator at one time. China Unicom does not have a code of this nature.

Using the mobile phone to edit the service code "0000" sent to the information service business operator, you can query the customization status and corresponding tariff standards of all short message services provided by the information service business operator, and you can return according to the Menu to choose to unsubscribe; edit "0000" on your mobile phone and send it to 186201, you can check all the short message service customization and corresponding tariff standards provided by this mobile phone's short message service operators operating in the entire China Mobile network, and you can Follow the return menu to choose to unsubscribe.

Use the mobile phone to edit "00000" and send it to the service code of the information service business operator, and unsubscribe from all short message service services provided by the information service business operator at one time; use the mobile phone to edit "00000" and send it By 186201, you can unsubscribe from all customized short message service services provided by short message service operators operating within the entire China Mobile network.