I have used docomo sim and reported its issue of bad network and call drop to its call centre several time but nobody was interest to solve my problem and solving it.
But their is come at right time without being delay. Means worst service provinding but they money on time.
Now please tell me one reason why should I countinue their service.
Problem with call connection
Problem with call drop.
Problem with network signal in rare areas.
Problem with internet flowing.
Problem with billing condition.