1. Open the home page of China Postal Savings Bank and select personal online banking to log in;

2. Open your personal online banking login page, enter your bank card number and login password (not withdrawal password), and click Login after verification code.

3. Enter the welcome interface of online banking, and click the Security Center in the tab above.

4. At this time, you can find the revised reservation information on the left. After clicking, your current reservation information will be displayed. Just enter your new reservation information, which is your mobile phone number.

Transformation of business hall

1 Take your ID card and bank card and go to the business outlets and lobby manager of China Postal Savings Bank near you and tell them that you want to modify the reserved mobile phone number.

Handle the bank's "inquiry and maintenance of personal customer contact information" business, and inquire whether there is a mobile phone number in the contact information and mobile phone contact information.

If the mobile phone number doesn't exist, tell the salesperson to add a new one.

If the mobile phone number already exists, please tell the salesperson that you want to change your mobile phone number, and then tell him the mobile phone number.