I an using an idea Sim from 1 year and the service of this mobile operator is quite good. It gives a good internet speed as compared to other mobile operators. It gives 3G internet speed upto 500-600kbps here in Himachal Kullu which is fast than other.
The call quality is also very good on this network. It had low call rates and provides low range full talk time offers. The only bad thing is that it does not signal range in hilly areas here. I hardly get signal at some places in hilly areas. Otherwise is a very good mobile operator.