Command option Sample:nmcli radio wwan

Search command sample in the internet.It is the result.

nmcli radio wwan off    Needs to restart Network-Manager to see broadband interface - Ask Ubuntu : http://askubuntu.com/questions/872242/needs-to-restart-network-manager-to-see-broadband-interface
nmcli radio wwan on    networking - Can't connect to the internet using Huawei 3G USB modem - Ask Ubuntu : http://askubuntu.com/questions/845665/cant-connect-to-the-internet-using-huawei-3g-usb-modem

search Google

https://www.google.com/#q=nmcli radio wwan