Excuse me, what is the legal basis for Qinghe court not to let the parties bring their mobile phones into the court?

The ringtone of the mobile phone affects the trial and the efficiency of the trial. In this way, the private information of the parties will be leaked, and it will be useless to hold a court session behind closed doors. Individual parties will copy the recording and distort the facts. Without a mobile phone, the interests of the parties will not be affected. As the basis of the final conversation, the trial will be printed in writing and signed by the parties. There is a fixed telephone in the court for everyone to use, free of charge.