Sincerely recommend, not to buy airtel 3G data card. I bought it 4 months back, where the sales guy promised that I will get a speed of 3.5 MBPS mimimum and it can go upto 7MPBS. But from day 1 till now I am getting speed of 200kbps to 800kbps. There is no use of buy 3G card with higher charges.
Now they started pestering me to pay bill. I have raised a complaint in consumer court.
https://consumercourtforum.in/india/airtel-3g-data-card/