Choosing 3G or EDGE on Mobile Broadband in ubuntu 17.10
open terminal type sudo chmod -R ugo+rw /etc/NetworkManager/system-connections press enter after that just go to the folder etc/NetworkManager/system-connections According to the documentation it is possible to force 3G with the parameter network-type : Following Options are available for the parameter network-type -1 any connection (Default value) 0 for Only 3G 1 for GPRS/EDGE only 2 prefer 3G 3 prefer 2G These changes have to made in /etc/NetworkManager/system-connections/your_3g_connection . Put network-type 0 in the section [gsm] Option 0 is what you requested, but I would recommend using 2 . If your signal is too weak for 3G, you'll have no connection at all with the setting 0 . Whereas the option 2 will go down to EDGE/GPRS in that case. Better 2G than nothing at all, isn't it?