I’ve been using Jio since a 2 years and still I haven’t used as my primary sim because of it’s incoming issues and good quality calls support only on VoLTE and those who has normal LTE they have to keep their internet ON and then make a call and even have to call through Jio4GVoice app or else it wont make a call and most of the time whenever someone tries to call you it says its out of coverage area or network busy but overall it’s okay cause it provides me very good internet service and its value for money. If you have a good phone which has VoLTE then you will not face any problem. Jio is a very good service provider but it needs to improve and im sure it will. Thank you