Having trouble getting this project off the ground. It is an OBD2 GPS unit, which I've noticed has quite a few posts in the community.
I was having trouble connecting with the unit, so I tried connecting with an unlocked Android phone without a problem. Moved it back into the gps unit, cleared the registration, and tried connecting again -- still problems.
The interface for sending commands to the unit is sms. I've tried using a cell phone to do this, but I understand that, in order to talk to the sim, it must be done with the api or "send sms" button. When I try setting the APN using the "send sms" in the portal, it gives me the error code in the title of this post: AerFrame ErrorCode 5.
My assumption of what the problem is: the device needs to be told that these commands are coming from a qualified source. In the instructions which come with the device it says that the first step is to set the center number, which in turn becomes the number which can control the device from. And when looking into that a bit, it seems that there's no center number which I can tell the device (because there is no originating number?).
Does this all seem correct? And does this mean that I'll be unable to use these sim cards in this device?