Hello friendz
today i have a new bsnl trick for all state.its 100% working and its 
getting very high speed downloading .to use this trick just follow my 
steps .
  APN : Celloneportal
   PROXY: 192.168.51.163 (or) 192.168.87.163
   PORT: 8080
   HP :google.com
Note- try this trick at low balance only