Can I still turn off the phone?

After the phone is turned off, the trip code will also show the trip that has happened, because it is a background operation. Launched by China ICT Institute of the Ministry of Industry and Information Technology in conjunction with three major operators, it provides itinerary inquiry service for 654.38+600 million mobile phone users nationwide by using the communication big data of three basic telecom companies, namely China Telecom, China Unicom and China Mobile. Support one-click query 14 days (stay for more than 4 hours) to visit countries (regions) and domestic cities.

Epidemiological investigation is the abbreviation of epidemiological investigation. Generally speaking, epidemiological investigation is the key to epidemic control, and the information collected by epidemiological investigation is priceless, which can play a key role in effectively curbing the epidemic. After the outbreak of novel coronavirus, it is very important to obtain real epidemiological information, and epidemiologists play a role like investigators and detectives. Disease control personnel can accurately check patients, isolate cases and close contacts, check high-risk groups, scientifically manage all kinds of people, make scientific decisions on epidemic prevention and control, and take control measures in time.