They gave 1GB for 151/ but the speed is so slow that even if you will try also you can not use 500MB in one month. Even if it will not allow to open the Play Store in Android, if you will try to connect Facebook it will not connect, Only mail client will work for test message even if you will try to download an attachment forget it you will never get it open.
I really feel they need to improve a lot in 2G Speed, 3G Speed is OK, but they have such high charges and also they do not have facility to balance forward so you have to use your whole data in a single week.