VivoS9e sets the password style for screen lock: enter Settings-Fingerprint, Face and Password/Fingerprint and Password/Face and Password, set security questions, and select "Screen lock password" to set the screen lock password; By default, the screen lock password is set to a 6-digit password. Click other password types/password options, and select mode password, 4-digit password, 4- 16-digit password and mixed password. Graphical links: links