I am using an idea user for last 3 years.The network strength is good but the service is not good.When you make a call then you had to hear a long advertisement which really irritates.The internet speed is also not so good and it really make feel bad to the user.Only good thing about idea is that it's signal coverage is good.
One more thing which is not good is that call rates are very high and net pack rates are also high, a common studying teenager like me really can not afford it.
I am not changing my sim because I am a loyal user and I hope that they can make it better.