In starting when Aircel company comes in the market The company launches the Aircel sim which had a good effect in the market and gone popular Day by day this company stablish good market and the network are good but after sometime when people want for the Aircel sim and it reaches its peak the are bad and the company had a bad effect in market and moreover sometimes network were gone for long durations like 2 to 3 days. I had a aircel sim but in 6 months I have to change my sim beacause of network problem. I bought there sim because they have good plans for calling and internet but network problem is always there so I have to switch my sim to another conpany