I am using this sim but very cheap simcard in every field.
I tried to use 3g many times but speed and connection was very cheap.
I tried to talk with customer care they took my complaint all the times but no action on that complaint.
In calling its also very cheap. Sometimes network goes to very busy and I was not able to call any where.
Charges are goos but when you Don't have good service and good network not good customer satisfaction then your low price plan will not work.
I found BSNL 3G very cheap all over where I went in india.