GSM/UMTS pin code disable/enable
AT+CLCK="SC",0,"XXXX"
(replacing xxxx with your own PIN) to turn off the PIN question.
This way, your UMTS card will start searching for a network
To turn the PIN question on again, type
AT+CLCK="SC",1,"XXXX"
and to check if it's on or off, type
AT+CLCK="SC",2
if it says "+CLCK: 0" the PIN is off, if it says "+CLCK: 1" the PIN is on
and to connect to the card use
screen /dev/ttyXXX
