Reliance Jio announced new Diwali offer with 100% cashback for Rs399. This cashback offer valid from 12th October to 18th October. To get the cashback offer you need to recharge through MyJio application. After recharge, you will get 8 vouchers that value Rs399. Each voucher has a value of 50. Each voucher can use for next 8 recharges through MyJio application.