Samsung GT-B3730 mobile broadband device

[Aleksander Morgado]

On Sun, Aug 13, 2017 at 4:09 PM, Germano Massullo
<germano.massullo at gmail.com> 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.

-- 
Aleksander
https://aleksander.es