Erasing all data will erase all data in the device, including contacts, pictures, text messages, etc. , and will not be restored.
Note: If you need a password to clear all data, but forget the screen lock password or vivo account password, you can enter vivo official website-My-Online Customer Service-Manual Input to consult online customer service feedback.
Backup: enter cloud service-device cloud backup-backup data type-system data-return-immediately back up some backup system settings and desktop layout; Cloud service-data synchronization-turn on WLAN and Bluetooth to synchronize data to cloud service.