WEll i am using telenor it is one of the most expensive ones how ever it is still dirt cheap as it dose not require a lot of data transmition to work..
everyday before leaving home i subscripbe a daily inernet bundle for 3 mb and it cost me 3.99 a day which is nothing and if u want to go even cheaper i would recomend zong
And please guys join waze pakistan page for updates, live traffic alerts and much more.