I forgot how to check my social security card and reserve my mobile phone number.

Inquire through the social security department official website, consult at the social security department window or call the social security department service hotline to inquire or modify.

First, through the social security department official website.

You can log in to official website, the local social security department, find the relevant personal information inquiry portal on the website, and enter personal information such as social security card number and ID number for inquiry. Social security websites in some areas may provide the inquiry function of reserving mobile phone numbers. You can try to find relevant options on the website.

Second, go to the social security department window for consultation.

If you can't find the reserved mobile phone number through the website, you can go to the window of the local social security department for consultation. In the window, you need to provide relevant identification documents, such as ID card and social security card. , explain the requirements to the staff, and they will assist in inquiring or modifying the reserved mobile phone number.

Third, call the social security department service hotline.

Besides website inquiry and window consultation, you can also call the service hotline of the local social security department for consultation. Before making a phone call, it is recommended to prepare personal social security card number, ID number and other related information so that the staff can help solve the problem faster.

To sum up:

If you forget the reserved mobile phone number of the social security card, you can inquire through the official website of the social security department, consult at the window of the social security department or call the service hotline of the social security department to inquire or modify it. It is suggested to choose the most convenient and quick way to operate and solve the problem as soon as possible.

Legal basis:

People's Republic of China (PRC) social insurance law

Article 58 provides that:

The employing unit shall, within 30 days from the date of employment, apply to the social insurance agency for social insurance registration for its employees. If the social insurance has not been registered, the social insurance agency shall verify the social insurance premium it should pay.

Employees-free individual industrial and commercial households who voluntarily participate in social insurance, part-time employees who do not participate in social insurance in the employing unit and other flexible employees shall apply to the social insurance agency for social insurance registration.

The state establishes a national unified personal social security number. Personal social security number is a citizen's identity number.

People's Republic of China (PRC) Identity Card Law

Article 14 stipulates:

When changing the registered items of permanent residence, handling military service registration, marriage registration, adoption registration, and going through exit formalities, citizens shall show their resident identity cards to prove their identity, which is required by other laws and administrative regulations.