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    5G Modem not working

    Cellular Modems
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    • L
      LR
      last edited by 4 Apr 2025, 20:17

      Hello,

      I am using a Starling V2 Max with voxl-suite 1.4.2 and a Qualcomm 5G module (pictured below). I have inserted a Mint Mobile SIM card and followed the configuration steps from ModalAI's documentation.

      During setup, I selected:
      1️⃣ V2 as the modem (option 1)
      2️⃣ No Modallink (option 2)
      3️⃣ T-Mobile APN: fast.t-mobile.com (since Mint uses T-Mobile's network) (option 4)

      However, the system fails to detect /dev/ttyUSB2, and running:

      ls /dev | grep ttyUSB

      returns nothing—indicating that no /dev/ttyUSB devices are available.

      Any insights or troubleshooting suggestions would be appreciated.

      Attached is a picture of the 5G modem for reference.
      Screenshot from 2025-04-04 15-14-59.png

      Thank you in advance

      T 1 Reply Last reply 4 Apr 2025, 20:26 Reply Quote 0
      • T
        tom admin @LR
        last edited by 4 Apr 2025, 20:26

        @LR What do you see with lsusb -t and ifconfig

        L 1 Reply Last reply 4 Apr 2025, 22:28 Reply Quote 0
        • L
          LR @tom
          last edited by 4 Apr 2025, 22:28

          @tom Here is the output for lsbusb -tScreenshot from 2025-04-04 17-24-34.png

          And here the one for ifconfig
          Screenshot from 2025-04-04 17-24-06.png

          it says that the voxl-modem service is up and running but it is not connected to the internet

          T 1 Reply Last reply 4 Apr 2025, 22:46 Reply Quote 0
          • T
            tom admin @LR
            last edited by 4 Apr 2025, 22:46

            @LR When running through voxl-configure-modem you'll want to select em9191 not v2

            L 1 Reply Last reply 5 Apr 2025, 02:33 Reply Quote 0
            • L
              LR @tom
              last edited by LR 5 Apr 2025, 02:35 5 Apr 2025, 02:33

              @tom Thanks it worked! Out of curiosity, was it written somewhere and I missed that?

              T 1 Reply Last reply 7 Apr 2025, 16:51 Reply Quote 0
              • T
                tom admin @LR
                last edited by 7 Apr 2025, 16:51

                @LR The 5G configuration on Starling 2 is a fairly new offering so there may not be fully representative docs live.

                1 Reply Last reply Reply Quote 0
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