As per many request i have modded a version of opera mini working greatly with airtel(tested)
Apn- airtelgprs.com
Proxy- 80.239.242.253
Port- 80
Just download and do the settings as below.I have already tried it with big files and so you can also download mobile 3gp movies.But the 2g speed really sucks.However something is better than nothing.Isn't it?
Below is the procedures you have to doApn- airtelgprs.com
Proxy- 80.239.242.253
Port- 80