Alfatool is a tool designed specifically for Android. It can automatically and securely pass the router information connected to the mobile phone, such as SSID, password, etc., to IoT devices to ensure that these devices can easily connect to the same network environment. This method not only simplifies the device configuration process, but also improves the convenience of use. However, it should be noted that the connection to the system can only be completed successfully after the external device has been successfully started. Therefore, when using Alfatool, please make sure that all related devices have been started correctly to ensure the stability and reliability of the network connection.