Why can't vivo phones locate the weather?

For reference, the following weather software cannot find an update processing method:

1, confirm whether the network signal is good, if the signal is poor, please try to change the network;

2. Enter Settings (Privacy/Security and Privacy)-Location Services-Turn on the switch;

3. Settings-Applications and Permissions-Application Management-Click on the point/More in the upper right corner-Display system programs-Weather storage-Permissions-Positioning-Selection is always allowed;

4. Enter Settings-System Management/More Settings-Backup and Reset/Restore Factory Settings-Restore All Settings-Restore and Restore Settings Options. This operation will not delete files or software, but will cancel the password and restore all settings, including the set wallpaper, unlocking method, WiFi, default opening program, etc.

Backup can be made before operation: enter cloud service-device cloud backup-backup data type-system data-return-immediately back up some system settings and desktop layout that can be backed up; Cloud service-data synchronization-turn on WLAN and Bluetooth to synchronize data to cloud service.