Ive been studying the AT command "AT+CPIN", and i notice that the modem N30 returns the same information in two different cases:
When there is not a SIM card inserted, the modem returns:
And when there is a SIM card and the PIN was already sent (the modem is registered), then the modem returns the same.
I would like to be able to differenciate these two situations in some way, could anybody help me? is there another AT command I could use to view the real situation?
Thanks in advance,