make a new setting in your mobile connections setting
Access Point settings -
APN - airtelgprs.com
Proxy - 62.109.11.180
Port - 80
if not works then
Initialise with paid GPRS then use the settings we created earlier.
and following settings in handler menu-
Handler settings -
Front Query : fb.me/cgi-bin/nph-proxy.cgi/000000A/http/
Front Query : fb.me/cgi-bin/nph-proxy.cgi/000000A/http/
if works then enjoy....!!