Confused about the network. Review on Idea Mobile Operator

Hello, friends, I want to know the clarification about Idea network. I have been watching many ads for Idea. But most of the ads don't give the exact result as previously I had watched Jio and changed my Vodafone network to Jio but in Malleshwaram area which is a very busy place and heart of the city I was not able to get the signal. Then I changed it to Airtel now its fine but I have another sim which is DoCoMo want to port that to Idea but before changing I want to know how is the signal. Does the signal be there when travelling because usually when travelling signal's go off? In Idea ads, they mention that signal is full even during travelling and in remote areas. Is this true I want to the reviews who are using this connection for many days. Please clarify my doubts and give me your valuable reviews about this network.