The addition unsuccessful when adding device?

<p>When adding a device using <em>&quot;Device Scan QRCode&quot;</em>,<em> &quot;Been Connected to the Network&quot;</em> ,<em>&quot;AP Direct Connection&quot;</em> or <em>&quot;Smart Config&quot;</em>, users may encounter some abnormal situations: if the APP prompts you <strong>&quot;Unfortunately, the device failed to add, please go back and try again.&quot;</strong>. There may be several reasons for this phenomenon:</p> <ul> <li>The APP and the device are not in the same local area network, and the device cannot be searched. It is recommended that you confirm that the phone has successfully switched to the same network as the device, and then try to add the device again. (It is known that due to the Apple mobile phone system, it will take a while to switch wireless LAN.)</li> <li>It takes time for the device to configure the network, and the APP waits for timeout. Because the device will be disconnected during the network configuration process, usually the APP will wait 180 seconds before trying to reconnect the device when it is added. However, it may take some time for some devices to complete the network configuration and successfully surf the Internet. It may be more than 180 seconds, then the APP and the device failure to connect will result in unsuccessful addition. If you encounter this situation, we suggest you try to add this device again, or try to add this device using the <em>&quot;Been Connected to the Network&quot;</em> method.</li> <li>When selecting the WiFi network configured for the device, an incorrect password was entered. This situation will cause the device to fail to configure the network, and the APP cannot establish a successful connection with the device, resulting in a failure to add the device.</li> </ul>