I am trying to connect an arduino yun to a gsm shield.
When i try and test it with a "SendSMS" program. I See:
SMS Messages Sender
And it says that way.
I tried to diagnose the problem with the "Pin Management" program and recieved the results in serial monitor:
Change PIN example
PIN & PUK locked. Use PIN2/PUK2 in a mobile phone.
What do i need to do to send a simple text message?
What do i do now?
Help ASAP would be appreciated.
EDIT:
Also tried "TestModem" program:
Results show as followed:
Starting modem test...
And then it says there... It's frozen.
Help?