Thank you all ...
I leave here my experience with this happened because it can help someone!
My problem was caused by homologation between cell phone operators.
I switched operator on my smartphone (but I kept the tracker operator) and everything worked ...
To confirm the test, I went back to the old operator on my smartphone and everything stopped.
hello, which port worked?
Hello ...
Acquire G500M OBD II for testing, but I'm not able to configure it using its own manual ...
It does not return any commands.
I checked 2 existing protocol documents here (raccar.org/protocols/) and realized that from one version to another there are some considerable differences ...
My device is version 2.89.00 2019/07/16.
Can someone who has been successful help me?