Hello friend I have a bsnl 3g data lw273 card. I bought it 6 months ago. It was working very well. Now I shifted to new place. Here I am not getting the network of bsnl 3g. I am getting bad network at this place. Here at this place Airtel 3g is working perfectly. So I want to use my Airtel 3g on data card lw273 to do so I need to unlock the data card but I donít have any idea how to do so. I do not want to spend money to buy Airtel data card. If anybody know the way to unlock it please3 let me know. You would be appreciated.