X20A phone, WeChat, and SMS all have no corner signs. Set the notification to turn on.

Vivo X20A mobile phone can't display desktop icons, so you can try the following solutions:

It is recommended to enter the mobile phone settings-status bar and notification-phone, WeChat, information and try to open the desktop icon; Then enter the I theme-my local theme and try to use the system theme.

If this phenomenon still occurs, it is recommended to find the standby desktop clearing data in the phone settings-more settings-application, and then restart the phone.

(Tips: Clearing the data of the standby desktop will restore the previously set desktop theme to the initial state. Please be careful. )