FCC authentication with QMI over MBIM; try 1

[Bjørn Mork]

Stefan Armbruster <ml001 at armbruster-it.de> writes:

> On a unrelated note: my 4G signal is rather poor. Mobile phone
> typically flips back and forth between 2g and 3g. I have the feeling
> that the Sierra modem does not really fall back to 2g. The connection
> is established very fast and reproducible, I do get IP address
> assigned, but it seems that I'm only sending out packets but don't
> receive anything.
>
> Changing to outdoors changed behaviour that I get traffic in both directions.
>
> Is there a way check if degradation to 3g or 2g is properly working?

I'll let Aleksander answer that, since I'm not really sure...

Just wanted to note that the EM7455 doesn't support 2g at all.  It is
3g/lte only.


Bjørn