How to query personal trajectory through travel itinerary code?

The method of inquiring personal trajectory by trip code is as follows:

Tools: iphone 12, ios 16.0, WeChat 8.0.3 1.

1. Enter WeChat and search for the communication itinerary card applet.

2, authorized login, click on the query.

3. Enter the page and check the travel track.

Function of travel code

Travel code is a communication big data travel card, which is a free inquiry service for 65.438+06 billion mobile phone users nationwide. The data received by China ICT Institute, China Telecom, China Mobile and China Unicom using mobile phones are obtained through the location of the base station where the user's mobile phone is located. Mobile phone users can query all the cities and cities they have visited in the previous seven days through this service.