How to prohibit querying SMS records?

The service password of the mobile phone card is required to query the call record, and it cannot be queried without this password.

1. To check the call records, you can only take your ID card to the business hall to check, and you will also be prompted with the verification code.

2. If someone visits the online business hall or inquiry machine and sees the contents of personal call records, the mobile phone will have a short message to remind them to modify the service password immediately.