Hi friends I am share my personal experience in airtel mobile operator. This is a worst experience in my life. last 5 years I use tata docomo sim card. firstly network and offers are really good, but after that network problem in my area and outside also, there are no network coverage. So I think port my number in others company like idea, airtel, vodafone, good network in my area. So port my number in airtel. firstly offers are good but very costly and their network are really poor. customer service also not good. so I think again I port my number in others mobile operator. worst experience in airtel.