Registered Devices Cannot Connect to the IoT Platform
- Run the AT+CGATT=1 command on the module to check whether an error is reported. If yes, perform the following operations:
- Confirm the status of the NB-IoT card with the NB-IoT network carrier.
- Confirm the module status with the module manufacturer.
- If the device is successfully connected to the network after you run the AT+CGATT=1 command, check whether the IP address and port number of the IoT platform used by the device are correct.
The IP address and port number are obtained from the IoT platform service provider. Port 5683 is used for non-encrypted access, and port 5684 is used for encrypted access.