I bought iPhone 4 from the USA from India. So the phone came packed and was not yet activated on Verizon network.

I would like to know can I still go ahead and activate Reliance CDMA on the phone. Which information do I need to collect from Reliance CDMA operator?

If I can activate it on Reliance, then which one would be suitable OTA or Program?

Why OTA is cheaper than Program? What are the differences?