How to use an EM7455 to see all networks and bands available

[Dan Williams]

On Wed, 2017-09-27 at 20:48 +0200, Fabian Schörghofer wrote:
> https://maxwireless.de/wp-content/uploads/2016/01/6820-Netzliste.jpg
> 
> The card is used in the AVM Fritbox 6820.
> 
> AT+XCELLINFO
> AT+XMETRIC

7345 is an Intel XMM device while the 7455 is a Qualcomm one.  I'm not
aware of any Qualcomm AT commands to do this for all cells via QMI,
unfortunately.  I looked though the Gobi dumps and can't find anything
useful there.  You can get adjacent cell informaiton, but I'm pretty
sure that's only for the same operator.

Dan

> might be the AT commands to do this. Haven't tested it though as I
> don't
> have such a card.
> 
> Am 27.09.2017 20:32, schrieb eRAGON:
> > Interesting....what commands do you use and why (what's different?)
> > that
> > the EM7455 cannot?
> > 
> > 
> > On 09/27/2017 02:25 PM, Fabian Schörghofer wrote:
> > > Sierra Wireless EM7345 can do this.
> > > 
> > > 
> > > Am 27.09.2017 20:21, schrieb Dan Williams:
> > > > On Wed, 2017-09-27 at 14:14 -0400, eRAGON wrote:
> > > > > OK, thanks. Since I'm in a little valley dip, I wanted to
> > > > > find out
> > > > > which
> > > > > carrier was best suited to go with. Is just changing the APN
> > > > > enough
> > > > > to
> > > > > register or it requires a SIM for each carriers' network?
> > > > 
> > > > It requires a SIM for each carrier, unfortunately, to register
> > > > with the
> > > > network and figure out which bands the carrier is on.  You
> > > > might be
> > > > able to use deactivated SIMs to at least figure out the signal
> > > > strength.
> > > > 
> > > > One thing you could try is to restrict the device to specific
> > > > bands,
> > > > then perform a scan, then restrict to a different band, scan,
> > > > etc until
> > > > you run out of bands.  However, that's somewhat error prone and
> > > > I've
> > > > effectively bricked modems that way before.  But this still
> > > > doesn't
> > > > tell you signal strength.
> > > > 
> > > > In short, there isn't a great way to do this without special
> > > > equipment.
> > > > 
> > > > Dan
> > > > 
> > > > > On 09/27/2017 01:51 PM, Aleksander Morgado wrote:
> > > > > > On Wed, Sep 27, 2017 at 7:26 PM, eRAGON <eRAGON at centurylink
> > > > > > .net>
> > > > > > wrote:
> > > > > > > Thanks, I tried that but it only give the current carrier
> > > > > > > that I
> > > > > > > am
> > > > > > > connected to. How do I make it pull the same info for all
> > > > > > > carriers
> > > > > > > within range?
> > > > > > > 
> > > > > > 
> > > > > > There is also this one:
> > > > > > $ qmicli -d /dev/cdc-wdm0 --device-open-mbim --nas-network-
> > > > > > scan
> > > > > > IIRC that also reports access technology per carrier.
> > > > > > 
> > > > > > Don't know of any command that would give detailed band
> > > > > > info as a
> > > > > > result of a network scan.
> > > > > > 
> > > > > > The --nas-get-rf-band-info command only applies to the
> > > > > > current
> > > > > > registered network as well IIRC.
> > > > > > 
> > 
> > 
> > 
> 
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