How to create 4G/GSM interface?

uConsole
1

I’m losing sleep over this… I have a data SIM, bought data, confirmed with the sim provider that I’m connected on their sim and have network access. I have a mobile broadband connection added on my uConsole via the Networking tab (and have also manually added one via modem-manger and nmcli). And I’ve followed @SuperMarioSF 's guide on setting up the services as well.

Depending on where I am in town, I can get both Verizon and AT&T signals and decent signal strengths. HOWEVER; in the network selection menu under mobile broadband options, “Verizon (LTE Roaming)”, is greyed out. Also, I have no network interface besides Lo and Wlan in ifconfig.

I’m thinking I need to associate an interface with the network I have available, but that’s where I’m lost. I’m trying to Google something to which I don’t know the name of, you know? Help!

Menu_001

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2

There should be a mmcli command that allow you enable roaming data connection. You can look that up and try that before using the newly created connection.
Then click the GSM connection 1 you just created. iirc the operator name should be greyed out by design.

3

The network connections menu has the option to allow raoming (and I’ve tried it on and off on my setup), which is essentially the GUI for modem-manager.

Also, trying to run it from the cli, the network manager drop-down no longer recognizes existing or new mobile broadband profiles. mmcli -m 0 still shows the progress I’ve made up this this point however, and the the SIM is active, attached, and registered.

Several reboots and service restarts do nothing either.

4

Below are my outputs. I’ve lost the ability to see the GSM networks on my network task bar, but modem-manager still detects them. I’ve some how made things worse.

5 
$lsusb:
Bus 005 Device 004: ID 1e0e:9001 Qualcomm / Option SimTech, Incorporated

$sudo mmcli -m 0:

  --------------------------------
  General  |                 path: /org/freedesktop/ModemManager1/Modem/0
           |            device id: {SECRET NUMBERS}
  --------------------------------
  Hardware |         manufacturer: SIMCOM INCORPORATED
           |                model: SIMCOM_SIM7600G-H
           |    firmware revision: LE20B04SIM7600G22
           |            supported: gsm-umts
           |              current: gsm-umts
           |         equipment id: {SECRET NUMBERS}
  --------------------------------
  System   |               device: /sys/devices/platform/fe380000.usb/usb5/5-1/5-1.3
           |              drivers: option
           |               plugin: simtech
           |         primary port: ttyUSB2
           |                ports: ttyUSB0 (ignored), ttyUSB1 (gps), ttyUSB2 (at), 
           |                       ttyUSB3 (at), ttyUSB4 (audio)
  --------------------------------
  Status   |       unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (3), sim-puk2 (10)
           |                state: registered
           |          power state: on
           |       signal quality: 58% (recent)
  --------------------------------
  Modes    |            supported: allowed: any; preferred: none
           |              current: allowed: any; preferred: none
  --------------------------------
  3GPP     |                 imei: {SECRET NUMBERS}
           |          operator id: 311480
           |        operator name: Verizon Wireless
           |         registration: roaming
           | packet service state: attached
  --------------------------------
  3GPP EPS | ue mode of operation: csps-2
  --------------------------------
  SIM      |     primary sim path: /org/freedesktop/ModemManager1/SIM/0


$sudo mmcli -b 0: 
 ----------------------------
  General    |           path: /org/freedesktop/ModemManager1/Bearer/0
             |           type: default
  ----------------------------
  Status     |      connected: no
             |      suspended: no
             |    multiplexed: no
             |     ip timeout: 20
  ----------------------------
  Properties |            apn: m2m.tag.com
             |        roaming: allowed
             |        ip type: ipv4v6
  ----------------------------
  Statistics |     start date: 2024-01-23T21:36:35Z
             |       duration: 71
             |       attempts: 1
             | total-duration: 71
6

One thing I think I found success with (though I can’t guarantee this fixed it and not something else, or the Modem Gods), was sending an AT reset command to the modem.

No guarantees, but try this:
echo -en "AT+CRESET\r\n" | sudo socat - /dev/ttyUSB3,crnl

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7

I tried that actually. But it’s no longer giving me an output of any sort. No yay or nay.

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