Bad mobile network reliance, the best thing about the sim which I like is the price, price is less but what about speed of internet is worst, and no network for calling even when u r on call then only your connection disconnected and when u r calling to someone then u have to make 10 to 15 calls in which one or two calls connects and other all disconnects the billing and charges are nice of this sim. but it is not of our sence if the network not work properly then what to do.