1. If it means setting the screen lock password.
1, mobile phone access settings-fingerprint, face and password/fingerprint and password-unlock screen password-enter password twice;
2. Click "Other Password Types/Password Options" in the lock screen password opening/changing interface, and you can choose to set mode password, 4- 16-digit password and mixed password.
Some models need to enter Settings-Security-Unlock Screen Password-Enter Password Settings.
Second, set the privacy password.
Born? OS/iQOO？ UI/Funtouch？ OS？ 3.0 and above: Enter Settings-Fingerprint, Face and Password/Fingerprint and Password/Face and Password-Privacy and Application Encryption-Enter a new privacy password twice-Set secret protection.
Funtouch？ OS？ Below 3.0: enter the mobile phone, my housekeeper-privacy space-set the password of privacy space-set the security question-complete.
Third, set the password for healthy use of equipment.
Method 1: Enter I Manager-(Utility)-Healthy Equipment Use-and open the "Password for Healthy Equipment Use";
Method 2: Go to Settings-Healthy Use of Equipment-Open the "Password for Healthy Use of Equipment", enter the password and set the security questions.
If you have more questions, you can go to official website /vivo Mall APP-My-Online Customer Service or vivo official website Web Edition-Slide to the End-Online Customer Service-Enter the manual customer service for consultation and understanding.