I am using Idea 4g network since 9-10 months. The network is good in my area. Also the plans given by idea nowadays are cost efficient. I am using 90 days unlimited calling and 1.5 GB daily 4G data plan for Rs.500. Amazing plan as it comes to Rs 170 per month approx. If we talk about the coverage then it is really good in Pune city. Also when I travel to my hometown the network is good there as well. If travelling by train the network is up throughout the journey. The best part is the 4G coverage and data speed. The downloading is super fast on Idea 4G. So Idea is perfect combination of full coverage and best plans. Highly recommend.