As we also know that Airtel top netwok in India. I recently purchased a airtel 4G sim for for 4G hand set. It was very easy to activate that sim as Airtel provide a best customer service and with in 10 minutes my Airtel got registared and my network come, at first time registration. This is a very good super network sim, even I went to my village there also the network on the top. Its internet charges is quite high but it provide a high speed internet server. The sim has a cost of only 100 rupees with this sim you will also get free high speed data and some balance also. For my its a very use full sim. I will like to recomend the sim to everyone. Network is very good.