I am using reliance Jio 4g since 2 years. It is very good data sercice provider. It has millions of subscribers. It gives us 4G data and VOLTE voice call at very low cost and gives many cashback offers. The founder of reliance Jio is Mukesh Ambani. According to TRAI's Report Jio telecom operator has highest internet speed than any other telecom operator. Reliance jio Gives us 100% cashback offers.
My suggestion is that If you want to get highest internet speed at low price that use Reliance Jio to get the benifits.
Thanks