Users Guide

Connecting through WWAN
NOTE: For more information on configuring and connecting through WWAN, see docs.ubuntu.com/core/en/stacks/
network/network-manager/docs/configure-cellular-connections.
1. Check if a modem is present and identify the modem index number.
# sudo mmcli –L
2. Check the modem status and identify the primary port.
# sudo mmcli -m<0>
NOTE: <0> refers to the modem index number. Replace <0> with the modem index number after running the command
at step 1.
3. Create a profile with the given primary port, for example, MBIM.
# sudo nmcli c add con-name test type gsm ifname cdc-wdm0 apn internet
4. Check the WWAN status.
# nmcli r wwan
5. Turn on WWAN.
# sudo nmcli r wwan on
6. Find wwan0 in the interface list.
# ifconfig -a
7. Enable the connection profile.
# sudo nmcli c up test
8. Check the Network Manager status.
$ nmcli d
9. Disable the connection profile.
# sudo nmcli c down test
10. Check the Network Manager status.
$ nmcli d
Enable debug mode for verbose logging
1. Adjust the systemd service.
# vi lib/systemd/system/ModemManager.service
2. Replace the line with the following:
ExecStart=/usr/sbin/ModemManager --debug --log-level=DEBUG
3. Re-initiate the service.
# systemctl daemon-reload
80
Setting up the operating system