Warid had this unlimited GPRS package for Rs. 500, which is still quoted as unlimited on their website has a limit now, which is 2 GB. Anyone exceeding this limit will be charged Rs. 0.20 per MB.
So be aware, and keep an eye on the meter even if you are using Warid’s unlimited GPRS Package.
Warid’s GPRS Packages’ detail are available here
It merits mentioning here that Telenor’s unlimited GPRS Package is also metered with limit of 2 GB
Ufone, Mobilink and Zong are still generous enough to offer genuine unlimited GPRS transfers.