Idea is 3rd biggest operator in my knowledge in india.it is going on increasing day by day. Its competating with the airtel which is next to them at present. But in near future due to brilliant speed of 4g networks and mobile connection capacity they may go ahead than airtel.i am using it since 5 years approximately, its impressive with talktime plans and also with exciting offers regarding 3g and 4g plans.but one thing there plans that is internet plans are little bit complex for ameteur users.because they have separate plans for 2g/3g/4g and for 2g/4g which begin confusion to the non 4g handset users.and switching of 3g to 4g in 4g handsets becomes difficult as in karnataka they have tied up e with airtel for 3g network purpose.but 4g having of their own.need to work hard to make these problems solved and in my opinion if these problem solved then it will stand first, ( best) network in india in near future