mmcli says no modem detected after attaching modem

Balena os says no modem detected after attaching modem , i am using quectel ec25-afx mini pcie with cm4. please help i have tried every thing.

plz help

Hi Neeleshdatley,

Perhaps this thread has some useful info https://forums.balena.io/t/configuring-cellular-modem-with-balena/167763/11; Also check the list of known modems that work Network Setup on balenaOS - Balena Documentation.

best of luck,
Ilija

Solved Thanks

Hiii getting this error

m-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): ‘CallFailed’
ce (cdc-wdm0): state change: prepare → failed (reason ‘unknown’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: failed for connection ‘airtel’
ce (cdc-wdm0): state change: failed → disconnected (reason ‘none’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: starting connection ‘airtel’ (efcc88b9-22c2-43ed-a1b7-c08c992555e7)
ce (cdc-wdm0): state change: disconnected → prepare (reason ‘none’, sys-iface-state: ‘managed’)
m-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): ‘CallFailed’
ce (cdc-wdm0): state change: prepare → failed (reason ‘unknown’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: failed for connection ‘airtel’
ce (cdc-wdm0): state change: failed → disconnected (reason ‘none’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: starting connection ‘airtel’ (efcc88b9-22c2-43ed-a1b7-c08c992555e7)
ce (cdc-wdm0): state change: disconnected → prepare (reason ‘none’, sys-iface-state: ‘managed’)
m-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): ‘CallFailed’
ce (cdc-wdm0): state change: prepare → failed (reason ‘unknown’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: failed for connection ‘airtel’
ce (cdc-wdm0): state change: failed → disconnected (reason ‘none’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: starting connection ‘airtel’ (efcc88b9-22c2-43ed-a1b7-c08c992555e7)
ce (cdc-wdm0): state change: disconnected → prepare (reason ‘none’, sys-iface-state: ‘managed’)
m-broadband[cdc-wdm0]: failed to connect modem: QMI protocol error (14): ‘CallFailed’
ce (cdc-wdm0): state change: prepare → failed (reason ‘unknown’, sys-iface-state: ‘managed’)
ce (cdc-wdm0): Activation: failed for connection ‘airtel’
ce (cdc-wdm0): state change: failed → disconnected (reason ‘none’, sys-iface-state: ‘managed’)
lines 936-957/1001 96%

please help

Hi,

Could it be you’re hitting a SIM card limit, like in this thread?

Sim is not registring kindly help

Hi,

Quick sanity test: does the SIM register properly in your phone (or other device)?

If you need to enter a PIN to use your SIM, you probably haven’t configured your network interface to do so.
Try a command like mmcli -i 0 –-pin '<PIN_HERE>' and see if it connects then.
If it does, you can add the pin to your system-connection.

yes it is working in my mobile , there is no sim lock. but when i check signal strength it shows 0.
And then it says sim registration failed. Connection time out

Sorry for the delay in responding.

Have you connected the correct antenna to your mini PCIe card?
A quick glance at the EC25 datasheet shows 3 connectors, probably a Main, GNSS and Aux/diversity.
You will need an antenna connected to the Main connector.