1. Confirm whether the connection between the APP and the device is successful;
2. Whether the APP exits and does not run in the background, it is recommended to enable the background running permission;
3. Confirm whether on the APP device page, turn on the notification reminder switch of the corresponding application;
4. Confirm that there is a message box in the notification bar of the mobile phone system. If no message is received in the notification bar of the mobile phone, please go to the system settings to enable the notification;
5. If you start the application on the APP and still want the device to receive reminders, you need to set the "restore mobile notification" in the corresponding application on the mobile phone;
6. The device needs to be connected to the mobile phone at all times, and the Bluetooth is kept on.