Will the police notify the police to pick up the phone when it is detained?

Depending on the situation, if it is related to the case, you can seize the mobile phone. According to Article 15 of the Law of the People's Republic of China on Resident Identity Cards, the people's police perform their duties according to law. Under any of the following circumstances, a resident's identity card may be examined upon the production of a law enforcement certificate: (1) The identity of a person suspected of violating the law and committing a crime needs to be ascertained; (two) when implementing on-site control according to law, it is necessary to find out the identity of the relevant personnel; (3) It is necessary to find out the identity of the relevant personnel at the scene in case of an emergency that seriously endangers social order; (four) during major events in railway stations, long-distance bus stations, ports, docks, airports or places designated by the Municipal People's government, it is necessary to find out the identity of the relevant personnel; (five) other circumstances required by law. In any of the circumstances listed in the preceding paragraph, if the people's police refuse to examine the resident identity card, they shall take measures to deal with it in accordance with relevant laws and regulations. No organization or individual may detain a resident identity card. However, unless the public security organ executes the compulsory measures of residential surveillance in accordance with the Criminal Procedure Law of People's Republic of China (PRC).