Samsung GT-B3730 mobile broadband device

Germano Massullo germano.massullo at
Wed Sep 6 23:04:00 UTC 2017

Il 13/08/2017 16:59, Aleksander Morgado ha scritto:
> On Sun, Aug 13, 2017 at 4:09 PM, Germano Massullo
> <germano.massullo at> wrote:
>> Il 13/08/2017 16:05, Aleksander Morgado ha scritto:
>>> I'm assuming there is some other AT command we can use to check for
>>> the PIN status. Germano, maybe you can try to investigate that path?
>>> E.g. sending the commands manually with minicom for example.
>> Yes I can try, do you have any online resource where I can retrieve some
>> examples to follow?
> Stop ModemManager, e.g. if using systemd:
> $ sudo systemctl disable ModemManager
> $ sudo systemctl stop ModemManager
> Running with minicom is easy, just:
> $ sudo minicom -D /dev/ttyUSB0
> Then explicitly enable echo, e.g.:
> ATE1
> After that, you can send commands manually and retrieve responses,
> e.g. try AT+CPIN? and see if you also get the ERROR message when
> sending it manually.
> What I don't know is what other AT commands you can try; may be worth
> googling for some Samsung specific AT command set, if that exists.

I attached as much as possible informations but I had no feedback on how
to better investigate

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