I am.use idea sim card more than 3 years. I used to unlimited pack for 1 months. But sometimes 3g network has down. I call the customer care , he asked me our service has slow. Please wait for 4 hours. Why? Why your service down. Other sims network are run properly. But idea has some problems. Most time the idea network could not connect to the network. Idea developers does not see the problems of the users. Users are suffering to the bad networks.
And I complaints many times but, they could not resolve.