Article 40 of the Constitution stipulates that the freedom and privacy of communication of citizens of the people's Republic of China are protected by law
No organization or individual may infringe on citizens' freedom and privacy of communication for any reason, except that the public security organ or procuratorial organ shall inspect communications in accordance with the procedures prescribed by law for the needs of national security or the investigation of criminal crimes
In order to find out the facts of the case, a municipal people's court may, if necessary, check the mobile phone call records of Wang.