Reliance jio made a break through in the market with its very cheap data and calling plans. I used Reliance jio for quite a few time ( about 8 months) , but I recently switched back to Idea. Flaws with jio include very less connectivity, I frequently faced this problem while visiting rural areas. Jio has no tie ups with service providers outside the country and since my bank account and mailing address were linked with that number, I was unable to receive OTP on it. Since other service providers too have started comming up with attractive plans, I would reccomend switching back.