GSM coverage in INDIA

I am using Arduino UNO R3 and GSM shield with integrated antennae developed by telephonica for my project. I need a SIM for the shield.As far as i know,there is no GSM coverage for telephonica in India.Could anyone please suggest what kind of SIM I need to buy

Could anyone please suggest what kind of SIM I need to buy

Generally you can use any SIM card, I have used personally the vodafone and never had a hiccup.

Some of the vendors may have the SIM card locked though but that is the case most probably in foreign countries.

can you have the program