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Wireless Modem internet on PinePhone

The kernel needs to be configured with CONFIG_USB_NET_QMI_WWAN and qmi_wwan module needs to be loaded first.

To enable data connection you can use qmicli tool from libqmi package.

Enable modem power

echo 1 > /sys/devices/platform/modem/powered

Configure APN

Connect to the modem once it's powered up via:

screen /dev/ttyUSB2 115200

Run the command to configure APN (may vary by operator):

AT+CGDCONT=1,"IP","internet"

Disconnect by CTRL+a k.

Start the network

qmicli -d /dev/cdc-wdm0 --wds-start-network=apn=internet --client-no-release-cid

Configure IP addresses:

qmicli -d /dev/cdc-wdm0 --wds-get-current-settings
[/dev/cdc-wdm0] Current settings retrieved:
           IP Family: IPv4
        IPv4 address: 10.130.248.26
    IPv4 subnet mask: 255.255.255.252
IPv4 gateway address: 10.130.248.25
    IPv4 primary DNS: 93.153.117.49
  IPv4 secondary DNS: 93.153.117.17
                 MTU: 1500
             Domains: none
ip a add 10.130.248.26/255.255.255.252 dev wwan0
ip r add default via 10.130.248.25

And if you want the mobile operator's DNS servers, add them to resolv.conf.