1. Confirm whether the password has been changed: carefully recall whether you have changed the password, or confirm with friends and relatives whether the screen lock password of the tablet has been changed by others without carrying the tablet. If it is a mixed password, be sure to pay attention to case sensitivity, underline, etc. Avoid entering the system by mistake.
2. Confirm whether the privacy space is used: If the password number or password type of the screen lock interface has changed/no password has been set, but the screen is locked, it may be that the privacy space has been opened. Please enter the password of privacy space and try to enter the system. If you forget the password of the privacy space, you can try to restore the factory settings.
Settings.
3. Restore the factory settings: If you can't recall the password, you can forcibly restore the tablet to the factory settings. It should be noted that the data in the tablet will also be cleared and cannot be recovered. It is recommended to back up the data before restoring the factory settings.