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

Wed Sep 27 18:32:40 UTC 2017

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>
>>>> 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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