Hi,
For those who are looking to try 3G on kindle, go the the settings page of Kindle and press Alt+EQQ i.e. Alt+311. Press the OK button and within a minute or two you will see a list of available networks on your Kindle with a tick sign against the network presently connected. Choose Airtel 3G (OR 404,92,2 (3G)) and it will take around a minute to connect.
Note once your kindle gets connected to 3G network you see 3G instead of EDGE on the upper right corner of your Kindle.
Regards,
Jaspreet