Unstructured Supplementary Service Data (USSD) is service offered by network providers to get information about subscriber account and menu-based information services etc. from the device to request for specific service on the network.
In many countries prepaid SIM cards are the only way to use in a 4G router. A device that provides 2 SIM cards without a feature to verify the status or renewal of the internet bundle from the provider is quite difficult to manage. Competitors like huawei have this USSD feature as a standard in their 4G routers.
In case the USSD feature will not be developed please provide a workaround with a script or CLI commands that works on the RTUX series.
Having a USSD feature is a must to use the RTUX Series in real environment.