It is illegal for an enterprise boss to collect employees' mobile phones during working hours, and the boss has violated the citizens' right to freedom of communication. You can file a civil lawsuit with the people's court, asking the enterprise to stop the infringement, compensate for the loss, and apologize. Labor law and contract law have no such provisions, such as the employer's labor contract and. Rules and regulations have such rules is also illegal, the rules and regulations of the employer can not exceed the provisions of the law, some units are not allowed to play mobile phones at work, this is OK, but the right to answer the phone has no right to limit, so the boss has no right to collect the phone, otherwise it is illegal.