Excuse me, how to clear the records of calls and short messages on the mobile network?

According to the relevant regulations of the Ministry of Information Industry, mobile communication operators (currently China Mobile and China Unicom) must keep the customer's call list and short message list for a certain period of time to facilitate customer inquiries and other legal requirements.

During this period, unless the information stored in the billing system of the mobile communication operator is destroyed, it is impossible to clear the records of calls and short messages on the mobile network.

Normally, mobile communication operators will not keep call lists and short message lists that exceed the specified time.