How to set the "access password for viewing SMS, address book and phone book" on the mobile phone?

This can only be achieved through the third-party software Baidu Security Manager. After downloading the mobile phone, install and start it, click the privacy center on the interface, set the password, enter and click the contact, and import all the contacts you need to keep secret, so that all the contacts who join the privacy list need a password to view, and the short messages they send also need a password to view. This password is the same as the password you set in the Privacy Center.