2.Create a new setting in your mobile
Access Point= airtelgprs.com
Proxy address= nokiaovi-cust.opera-mini.net or 18.104.22.168
Port= 80 (Remember its 80 not 8080)
You may get charged 0.30 paise during initialisation.
After that you are not charged.
Working 100%.Downloading is also free.
I tested downloading a small file of 1 MB and no deduction.
Enjoy Free Browsing and downloading.
It is Working at any balance.