I used aircel for about six months when I was in hyderabad for my coaching classes.Let me tell you I had to face so many problems because of signal issues.In my house 3g internet is fast when I am to one of the corner of my room and if I go to an other room the speed decreases.This was very very irritating.Well, I firstly took aircel as they have very attractive internet offers and also offer unlimited internet and one of the main reason is that their office was nearby in himayatnagar and they activated my sim immediately.I appreciate that but then I had to face so much from my friends who used to always complain that a call to me never connects.The company can pick up if they improvise on their network issues and resolve it may be by setting up more signal towers and increasing the strength!