I am a user of Airtel from 2 years. now a days I am very disappointed with my Airtel connection. as many times most of my calls are dropped in between. in cities also network is not good. as many other sim companies provide offer at low rates but I had not change my connection or port my number . many times I have received many calls for the person who has this number earlier before me .i complaint many times but they tell me wait. customer care service is also poor .so I decided to change my number .So in my opinions Airtel is the worst network now a days.