1, enter Settings-Battery-(More Settings)-If "Sleep Mode" is turned on, the program will intermittently receive background messages at night, and you can turn off this function for observation and use;
2. Change the network environment or switch to view the network;
3. Please try again at another time (excluding server reasons);
4. Enter Settings-Applications and Permissions/More Settings-Application Management-WeChat-Store-Clear Data;
Funtouch OS 9 (excluding) the following models: Need to enter Settings-More Settings-Apply-All-WeChat-Clear Data;
Note: Please back up the data in the software before operation to avoid loss and irretrievability.
5. Enter Settings-System Management/More Settings-Backup and Reset/Restore Factory Settings-Restore All Settings-Restore;
Note: Restoring all settings will not delete any data or media files, but only restore all settings of the mobile phone (such as setting wallpaper, unlocking method, WiFi, default startup program, desktop layout, etc.). ), some third-party application accounts need to log in again. Please ensure that the use of the software will not be affected before operation. For the sake of data security, it is recommended to back up the mobile phone data in advance before operation. (You can go to Cloud Service-Device Cloud Backup-Backup Data Type-System Data-Back-Back up some backup system settings and desktop layout immediately; Cloud service-data synchronization-enable WLAN, Bluetooth, etc. Synchronize data to cloud services)
6. If the above methods are not improved after operation, it is recommended to enter vivo official website-My-Online Customer Service-Input labor and consult online customer service feedback.