So lets Discuss the trick its very simple all you have to top is follopw the simple steps and try this trick at very low balance beacause it may can harm your balance if it fails to work or if you did any mistake in the procedure so the trick is
Airtel free superfast browsing and downloading using Proxy address. Here are some Proxy which allows you to download file, fast browsing, Resume Support, Youtube support and downloading too. Just need airtel Sim with Mofile Office setting, Use Proxy as per your needs and download files.
APN : airtelgprs.com (Mobile Office)
Homepage: http://www.fb.me
Port: 80
Use Proxy for Airtel
fast browsing : 68.233.235.54 or 66.90.76.90
speed browsing : 69.10.51.83 or 67.159.14.90
Resume support : 91.143.83.139
fast downloading : 92.48.64.150
Big files download : 209.97.221.88
Download limit upto 500MB : 67.159.46.202
Download limit upto 300MB : 76.73.10.122
YouTube Browsing and Downloading : 209.17.190.79