Thanks to all the dudes who responded in this thread.
One thing I want to know is : Is this a 512 unlimited plan without strings attached? Or it is one of the plans where you get 512 kbps upto certain gb of data transfer and then it gets back to 256 kbps for rest of the month?
-Ashutosh
The 512 UL Plan (Rs.1350) does not have any such conditions its 512kbps for the whole month.
But HOLD ON, someone above wrote that BSNL changed all its 256kbps users to 512kbps users, thats why some users are noticing double speed. They are paying less and getting same speed as 512kbps users. This is not fare. We pay more and get same!!! Waiting for a official news on the Double speed offer.