Answer: For Android phones, because of the features of the system, the notification is blocked by the system when it receives a notification, and the push is displayed with the following permissions.
A, In APP, Me -common settings – notification settings-Auto run Open APP launch permissions and set them to manage manually
b, In APP, Me – common settings – notification settings -permission management are set to allow notification and allow lock screen notification, Some of the androids ten or more systems need to be opened in permission management to draw over other apps.
c, In APP, Me – common settings – notification settings -battery allows ignoring battery optimization.