Yes, you can. The itinerary card is to use the cell phone number verification login, so it is possible to change the cell phone to use, but must use the previous cell phone card number, change the phone to log in again after the refresh can; if you change the cell phone number, you can log in the communication itinerary card APP, re-acquisition of permissions, select the status refresh function, refresh the single room before the location, you can update the data.

Communication big data itinerary card, by the China Academy of Information and Communication Technology, China Telecom, China Mobile, China Unicom three basic telecommunications enterprises to use the cell phone "signaling data", through the user's cell phone is located in the location of the base station to obtain, for the country's 1.6 billion cell phone users free of charge to provide query services. Cell phone users can use the service to inquire about all the cities and towns they have visited in the previous 14 days.

As of March 25, 2020, the cumulative query volume has exceeded 450 million times. starting from 20:30 on January 8, 2021, the trip card will no longer mark the names of cities and municipalities containing medium and high-risk areas in red, and will change to include medium and high-risk areas in the parentheses after the name of the city, which is only used as a travel reminder and is not related to health status.

March 30, the national government service platform "epidemic prevention health code" has integrated "communication big data trip card" related information, can be displayed in the health code users, whether they have been to medium and high risk areas and other trip information, help health code "A code pass". August 5, the State Council Joint Prevention and Control Mechanism held a press conference, "communication itinerary card" cumulative query service of more than 12 billion times, to become an important means of prevention and control of epidemics around the good.

Users in the Baidu App directly search for "health code", the search results can be presented at the same time the user's local health code, the national government service platform "epidemic prevention and health information code". In the "epidemic prevention and health information code" page, "health code" has been integrated under the "communication big data itinerary card" information column, which can display whether the user has been to medium and high risk areas and other itinerary information.

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In September 2021, in order to help people travel safely, the national government service platform will integrate the health code and trip code "one page can check", open Alipay's health code at the same time can see the trip code. This means that the health code, trip code in the national comprehensive realization of a page pass type "two codes in one".