ModemManager using QMI doesnt always work in the first attemp.

[José]

The problem only occurs if the LE910 was in low power mode (AT+CFUN=4) when
plugged to the embbeded device. Does ModemManager manage power state modes?
Should it automatically full enable the modem (AT+CFUN=1) when issuing
mmcli --simple-connect?

I am going to test with a new firmware I have received from Telit and check
if the issue is reproducible.

On Mon, Jan 18, 2016 at 6:04 PM, Dan Williams <dcbw at redhat.com> wrote:

> On Mon, 2016-01-18 at 16:55 +0100, José  wrote:
> > I was not sure what caused the 'limited' registration state... I am
> > going to check if there is any firmware updates available and try
> > that.
> >
> > They all are nanoSIM. Not sure if there is any errors when using
> > Movistar and Yoigo SIMs, I will try it out and check the logs as soon
> > as I can.
>
> Yes, some SIMs cannot be read by some modems.
>
> For example, there is a bug in older Icera-based modems (Nokia 21M-02,
> Samsung Y3300 and Y3400, T-Mobile Rocket 2, Option GIO-322) that
> refuses to read T-Mobile USA SIMs that have Isis/Softcard mobile wallet
> capabilities.  Other, non-Isis-branded T-Mobile USA SIMs do not have
> this problem.  These Icera devices will never receive a firmware update
> to fix the problem, so they will remain incompatible forever.
>
> For the Telit device, your only recourse would be to ask Telit if it is
> a known bug, and request an updated firmware to fix the issue.  Or use
> a different SIM :(
>
> Dan
>
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