@Narrow_Band_Minus
I am currently using bsnl mobile prepaid gprs. Unlike other service providers bsnl don't activate unwanted services. But still I don't like postpaid services as we can't check for tariff every day. We may end up paying huge bill. But for prepaid services we loss only the amount we had in our account. I don't need high bandwidth every month. So if they introduce cheap prepaid tariff I can subscribe to their wimax only when I need high bandwidth. Else can continue with my gprs. What is the problem in waiting as I can manage with my current bandwidth.