If you have acquaintances during your trip, can you check your personal information?

Not allowed. In principle, mobile communication companies do not allow anyone to inquire about other people's personal information, including acquaintances. According to the regulations, even acquaintances can't inquire about other people's real identity information, which is illegal. Technically, it may have the ability to inquire about other people's information, but without the authorization of the public security organ (above the municipal level), the mobile communication company may not provide such inquiry services, and the inquiry results must be kept strictly confidential. If someone violates the regulations to inquire about your communication information, they can bring a lawsuit to the court. Therefore, it is best not to ask acquaintances to help you check your personal information, so as not to bring them legal risks.