I am using gsm shield with uno board , i'm going through test code provided in IDE . voice call & sms testing was successful ...but i'm stuck in GPRS connecting .It's not connecting any way whenever i am entering my APN ,then putting blank in login & password field it gives error.
N.B : i haven't give pin number,without pin number voice call & sms experiment was successful
Connecting GSM network...OK
Enter your APN: INTERNET
Now, enter your login:
Finally, enter your password: Attaching to GPRS with your APN...
ERROR