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Can I update the travel code within 14 days after the phone is turned off?
The trip code cannot be updated 14 days after the phone is turned off. After the mobile phone is turned off, the travel code data is not updated, and the travel code data is mainly obtained through the GPS function of the mobile phone. After the phone is turned off, the GPS function is turned off and it is impossible to locate. If the phone cannot be located, there is no travel code data. I didn't bring my mobile phone during the trip, and my mobile phone was turned off during the trip.
relevant knowledge
Communication Travel Big Data Card Travel Code is a public service jointly launched by China ICT Institute, China Mobile, China Telecom and China Unicom under the guidance of the Ministry of Industry and Information Technology. Can provide users with free proof of my 4-hour visit to countries and regions in the past 14 days.
The travel card analyzes the signaling data and bill data of the mobile phone, connects with 3G, 4G and 5G networks, sends and receives short messages, answers incoming calls and makes calls. Therefore, the premise of having travel data is that users generate these signaling and bill data in the process of using mobile phones.
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