Jio is the best step taken by mukesh ambani and jio sim works very good and I have no fear of recharging because of this jio because it is excellant in speed and there are somewht problems while connecting the phone but it takes just just two to three trails to connects. the speed of jio is very good and I lived it very much. but the only problem is the Mobile data is to be turned on always to receive incoming calls rather than this there no another problem. jio works as 4G that is good for 4g phones only but not for the 3g phones and I wieh that jio works for 3g phones also.