Jiangsu Medical Insurance Cloud shows that the mobile phone number is not reserved.

1. Bring my ID card and social security card to the local social security center and ask the staff to reserve the mobile phone number.

2. Call the national labor security telephone consultation service special number 12333 and ask the customer service staff what their reserved mobile phone number is.

3. Log in to official website, the local Human Resources and Social Security Bureau, enter the "Personal Social Security Information Inquiry" interface, and then enter your ID number, password and verification code to log in. After logging in, select "SMS service" and then click "Mobile phone number registration" to know what your reserved mobile phone number is.