Idea is present in India from a long years.And has launched its 4G LTE services in recent years after the JIO Network.
I have been Idea 4G's user from quite a good time.And I can surely say that this 4G network has lot of issues.
This 4G network is not upto the mark to modern world users.As you all know this generation is largely spending times playing online games such as PUBG, 8 ball pool & etc and this Idea 4G network doesn't helps in this as when you are playing online game and someone calls you or even miss call your 4G network will be turned off and your 3G or 2G service will be activated which is a major drawback in usage of this network.
And other problem with this 4G network is that its 4G services work in main city only if you go little outside city you will not be able to use 4G services.
So, I have told the drawback now you decide.