Vivo mobile phone system comes with weather software. What is the reason for the flashback?

Suggest that you can try to enter the Settings-System Management-Backup and Reset-Restore all settings-Restore, and restore the settings options. This operation will not delete the media file, but will cancel the password and restore all settings, including the set wallpaper, unlocking method, WiFi, default opening program, etc. Logged-in software accounts also need to log in again.

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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.