One of the pathetic mobile operators I have come across a short story on airtel, I stay in vasai n it was a mumbai sim what I bought from my office in few weeks it stopped working moment I is to cross bhyander coming towards virar den called d fab customer care who never understand anything den was asked to go to store n said it was HLR issue store said I have to change usim even after that tried it fr another month even after complaining no onen ever called to followup with d complaint n when asked fr cancellatiin dey still dare to retain u .hats off airtel only people whom dey hire fr ads get good netwrk I guess.never ever recommended.