Reliance Jio Network is VERY GOOD NETWORK SUPERB SPEED OF DOWNLOADING Apps , Video Calling , Uploading and Surfing, etc.Jio has Set Unlimited Usage of INTERNET AND BALANCE TILL DECEMBER BUT IF U SEE A TIME JIO IS VERY GOOD TILL DECEMBER BUT NOT AFTR THAT BECAUSE AFTER THAT TILL WILL BECOME NORMAL DATA PLANS WHICH OTHER COMPANIES HAVING LIKE AIRTEL, VODAFONE , AIRCEL, ETC. ITS BETTER U KEEP UR BOTH SIMCARD UR OLD ONE ALSO AND JIO CARD TOO.