1. The initial service password of Unicom's mobile phone number is the last 6 digits of the mobile phone number;

2. The initial password cannot be used for business, and it can only be used after being changed. The new 6-digit password cannot be a conventional 6-digit number, such as 123456,111,and this digital combination structure is not allowed;

3. You can edit the short message "MMCZ#6 new password # 6 digits after ID number" and send it to 100 10. You can reset the service password for your local number according to the prompt of reply SMS.

4. You can also log in to the online business hall of China Unicom and the login interface of the mobile phone business hall of China Unicom, and click "Forgot Password" to obtain a new service password according to the page prompts.