1. First, log in to the bank account. After logging in, select the option of customer service in the menu bar above the personal homepage.

2. Second, the registration number. In the step of registering the number, select the account number, enter the mobile phone number, and click to get the mobile phone verification code.

3. Finally, enter the verification code in the blank space of the mobile phone verification code, and then click the submit button, and the mobile phone number is successfully bound.