I am using Airtel since 9 years.The best part is the signal strength very good and other customer care service they provide.Having very attractive plans for its prepaid users which attracts many users from other networks towards airtel.Internet mobile plans is a hit among its customers.Internet mobile connection is awesome fast.Very good customer service and easily approachable to its executives.The politeness of each and every representative and the flexibility to reach us and refunds they provide for invalid or wrong transaction made by us really encourages me to stay with them and maintain a relationship with Airtel.