Icbc's SMS notification is charged. If you want free service, you can apply for email service. The specific method is as follows:

1. Open the ICBC application on your mobile phone and click the search box above.

2. Enter ICBC Messenger in the search box and click to open the search results.

3. Select the bank account for business, and click Next.

4. Enter the received mobile phone number, click to view the e-rental information, and click Next to complete the e-rental service.