Its been about two months ago I bought the reliance jio sim. At starting it worked fine with good internet speed. But mow it suckes I mean, which operator provides this speed of internet which is about 2 mbps only they are just giving 3G speed and naming it as 4G that is totally fraud. Secondly, when we come in the matter of calling it only calls when its not day I mean really after midnight I can call, just tell me Mr. Chairman of Reliance Jio telecommunications who is waking for full night to recive my calls. It was good at starting but suddenly I dont know what happened, I only want to say its good for unlimited data usage but when it comes to calling section its not useful so but a 4GB limit for a day is Ok for a normal user so u should try it once in my opinion.