I am developing a custom firmware for a device using U-Blox SARA R410M-02B-01. I am using Hologram SIM card activated for global coverage and I am based on Spain. I am trying to register to a network, but I am unable to connect to it, the command AT+CREG:
+CREG: 1,0
seems to indicate 0 stat, which according to the AT commands manual indicates not register, neither looking for a network.
I tried to set up the USVCDOMAIN to CS/PS as this:
AT+USVCDOMAIN=2,0,1
to enable both Circuit Switch (CS) and Packet Switch(PS) service domains, and although it worked and make a registration, it registrered the network as roaming, because when I do CREG again after enable CS service domain, I receive:
+CREG: 1,5
which indicates registered as roaming. The weirdest thing, is that even when CREG states no Network Registration, I have network access through the SARA modem.
In addition to the above, the whole time, the commmand +CGATT seems to indicate that it is registered to Packet Switched services.
Thanks in advance.