What is a communication itinerary card? How to get it?

Communication Big Data Travel Card is a free inquiry service for 654.38+06 billion mobile phone users nationwide, which is obtained by China Xintong Institute, China Telecom, China Mobile and China Unicom by using the "signaling data" of mobile phones. Mobile phone users can query all the city information they have visited in the previous 654.38+04 days through this service. The setting method is as follows:

1. After entering the main interface of WeChat, click the applet below.

2. After entering, there is a search icon in the upper right corner.

3. Search travel itinerary card, and then you can see the related applet, and click enter.

4. In this way, the system will automatically identify the relevant content, and you need to check the information of the query.

6. After the inspection, click the query button below.

7, so you can see the whereabouts of 14 days.