micro sim is mostly available with all the service provider AFAIK, however if you are out of India and coming here, Getting a MATRIX would be an option. Recently( yesterday ) My friend had same dilemma and asked me to send the sim card via FedEx, it costs 2K for fastest delivery ( a week or so) , and for slowest is 850 ( 15 or more days), I told him to turn off the phone when he reaches to India, find a STD booth call me and then I can give him the card when I see him...