So, in case you have a 4G phone, you will need have support for VoLTE capable phone to make calls on the Jio network or else you can use 4G data if your phone does not support VoLTE. You can still use 4G phones which support Jio LTE band, but you will not be able to make calls unless your phone supports VoLTE.
Other Most Useful Reliance JIO Coverage
1. Reliance Jio Plans Explained, Are They Really Low Cost? All You Need to Know
2. Everything You Need To Know About Reliance JioFi Pocket Wi-Fi Router
Clear Your Doubts About JIO Network and Phones Which Will Work
But what about you plan to buy a phone, you want to make sure it will work on JIO Network. So, In order to sort this we have compiled the list of official phones which are supported on JIO Network.