4g network keeps on vanishing, you can never get a stable connection no matter wherever you go. The internet speed is no different than that of 3g network, both 4g and 3g speed of idea is same. Costomer services are awful they take too much time to pick your call and the problem can never be solved completely. They say that voice call is unlimited, but NO, they only provide 1200min/week and you cant even call when your balance is below 5 rs.