Parin Bhai.. I am using OMH card in S3 (USC) . Even i have same problem.. I tried sending sms but even i get the same response "Dear Customer, Incorrect request entered. please contact Customer Service on *333."
At times it shows me 3G but the moment i use net, it reverts to 1x .
Please tell me how do i get EVDO / HSD activated.
Thanks