I am trying to get my GSM shield set up so that I can send and receive text messages. I have an ATT Go Phone SIM set up with text messages, and it will send and receive messages on a cell phone. I put the SIM into my GSM shield, and I cannot connect to the network. I have called ATT and got the pin for my SIM, and am using that in my sketches. My problems are below.
When I run TestModem, the board checks my IMEI number, and it matches what is on the board. It then tells me that the modem is functioning properly.
When I run GsmScanNetworks, I get:
GSM networks scanner Not connected Not connected
When I run PinManagement, I get:
Change PIN example PIN & PUK locked. Use PIN2/PUK2 in a mobile phone.
When I run TestGPRS, I get: Connecting GSM network...ERROR
Any ideas what I can do to get this set up and working?
Thanks in advance!