Mar 19, 2013 #1 M mailgsurya Newbie level 3 Joined Nov 9, 2012 Messages 3 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,296 I am using a sim900a gsm module . It is working fine with 2G sim cards. When i insert 2G/3G sim card i get an error AT+CPIN - Error. can anyone help me out with this.
I am using a sim900a gsm module . It is working fine with 2G sim cards. When i insert 2G/3G sim card i get an error AT+CPIN - Error. can anyone help me out with this.
Aug 6, 2013 #2 R rams27apr Newbie level 3 Joined Jan 19, 2011 Messages 4 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Location chennai Activity points 1,305 Please check the sim card holder.. and when modem is on then u have check at+ipr=baudrate.. it will reply ok.. switch off and on the modem..
Please check the sim card holder.. and when modem is on then u have check at+ipr=baudrate.. it will reply ok.. switch off and on the modem..