Hi I have a UMG 1831 USB Data Modem. I want to buy a BSNL 3G Sim to use it with my laptop. I am currently living in Chennai. I called the customer care 4 times and they could not answer my questions. I want to know the following please:1. What is the process for me to get the Sim with 3G Service activated?2. What recharge do I have to do to get a Prepaid Unlimited Plan on the card?3. I heard I have to do some other recharge before I can recharge for the Prepaid Unlimited Plan of Rs. 1499. Is this true?