1. First, you need to log in to your Baidu account and enter your account and login password to succeed.
2. After successful login, we will find the login "User Name" in the upper right corner of the interface, then point to the user name, and there will be an "Account Settings" option.
3. After selecting the "Account Option" function, Baidu security interface will appear, and continue to select "Secret Protection Tool".
4. After selecting the secret security tool, there will be options on how to modify the mobile phone number and how to unbind it. We choose "modify mobile phone number".
5. After selecting "Mobile Phone Number", enter the mobile phone number we bound before. After the input is correct, the system will send you a new verification code and enter the verification code.
6. Finally, select binding, and enter the mobile phone number to be bound, and it can be modified smoothly.