I use jio sim for last 10 month. And it is very good. Now a day its network is also improved. Ambani giving us all a free 4G for a last 1 year. So I recommed you all to switch to jio network because all other operators are cheating us like Airtel and Idea. But jio is best and I m using its hotspot and it is very good for 3G phones for using 4G data speed.