India Airtel network is the largest network of india. network coverage of the company is very good. I live in kolkata so the network coverage is good no call drop. but the company not provide extra benefits for his old customer. I am using this network from past 5 yrars and also my family member using this network for old customer should be a provide extra benefits for no loosing the customer. airtel 4g network is first in india so I like it. the speed of the airtel 4g is very high. I like it