1. First, open the heart bank client on the mobile phone desktop and click on the top left corner of the page.

2. In the pop-up page box, click Login as shown by the arrow to log in to the client.

3. After logging in, click the credit card indicated by the arrow at the bottom of the page.

4. After entering the credit card page, click the message indicated by the arrow to customize the service.

5. Then, click Turn off SMS notification.