How to delete unauthorized messages?

ColorOS7. 1 system adds "multi-user mode", which can add multiple sub-users (the system adds a visitor by default), and each user (visitor) is equivalent to an independent mobile phone system. To add a new user in multi-user mode: go to Settings > Users and Accounts >; Multi-user ",click"+"in the upper right corner or" Add User "below and enter the user name to be added. Quickly switch users: "drop down (twice) the notification bar > click the" avatar "logo in the upper right corner > switch to the corresponding account" to jump to the user's mobile phone desktop interface. To delete a new user in multi-user mode: go to Settings > Users and Accounts >; Multi-user ",click the" gear "or" > "on the left side of the user to be deleted, and then click Delete User. Tips: ① This function is applicable to some models and will be applicable to more models in the future. You can check whether the mobile phone supports it through the above setting path ~ ② The first user account needs to be turned on. ③ After adding a new user, the user must set up his own space, and any user can update the application for all other users. ④ Add up to 3 sub-users, 1 visitor. You cannot uninstall multiple users or delete guest mode. Due to different models and system versions, the operation path may be slightly different, please refer to the actual operation interface display of the mobile phone. This answer is applicable to ColorOS7. 1 and above.